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Graphical Abstract Angew. Chem. Int. Ed. 482005

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Contents
The following Communications have been judged by at least two referees to be “very
important papers” and will be published online at www.angewandte.org soon:
C. Drago, L. Caggiano, R. F. W. Jackson*
Vanadium-Catalyzed Sulfur Oxidation/Kinetic Resolution in the
Synthesis of Enantiomerically Pure Alkyl Aryl Sulfoxides
X. Rocquefelte,* S. E. Boulfelfel, M. B. Yahia, J. Bauer,
J.-Y. Saillard,* J.-F. Halet*
The Structural Preferences of Boron and Carbon within MB2C2
(M = Mg,Sc,Ca,Y,Ln) Phases: The “Coloring Problem” Revisited
by DFT Calculations
S. Klaus, H. Neumann, A. Zapf, D. Str0bing, S. H0bner,
J. Almena,* T. Riermeier, P. Groß, M. Sarich, W.-R. Krahnert,
K. Rossen, M. Beller*
A General and Efficient Method for the Formylation of Aryl and
Heteroaryl Bromides
N. Mart5n,* 6. Mart5n-Domenech, S. Filippone, M. Altable,
L. Echegoyen,* C. M. Cardona
Retrocycloaddition Reactions of Pyrrolidinofullerenes
G. C. Lloyd-Jones,* R. G. Margue, J. G. de Vries
Rate Enhancement by Ethylene in the Ru-Catalyzed Ring-Closing
Metathesis of Enynes: Evidence for an “Ene-then-Yne” Pathway
That Diverts through a Second Catalytic Cycle
Meeting Reviews
H. Braunschweig, D. Rais
7826
Ronald Breslow
reviewed by M. Meldal
7829
Tales of the unexpected: A multitude of
new reactions have been discovered for
nitrones, the chemistry of which was
considered well established. Two of them,
a formal [3þ3] cycloaddition and a
pinacol-type coupling (see scheme) are
induced by lanthanide derivatives and
appear particularly promising and attractive for the synthesis of natural products
and complex molecules.
Boron—A Meeting Point
Books
Artificial Enzymes
Highlights
Organic Synthesis
F. Cardona, A. Goti*
7832 – 7835
The Discovery of Novel Metal-Induced
Reactions of Nitrones: Not Only
Electrophiles and Reagents for
[3þ2] Cycloadditions
Essays
History of Chemistry
A. de Meijere*
7836 – 7840
Adolf von Baeyer: Winner of the Nobel
Prize for Chemistry 1905
7814
The 100th anniversary of the awarding of
the Nobel Prize for Chemistry to Adolf
von Baeyer (1835–1912) is drawing to a
close. Nevertheless, his scientific work,
especially that on organic dyes, C-nitroso
compounds, and on hydroaromatic compounds have had and continue to have a
profound effect on chemistry and on the
chemical industry.
2005 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
Angew. Chem. Int. Ed. 2005, 44, 7814 – 7825
Angewandte
Chemie
Minireviews
G/C or A/T: that is the question! Nucleotide variations in the human genome,
such as single-nucleotide polymorphisms
(see picture), can be linked directly to
diseases and also to side effects of drugs.
Efficient, cost-effective processes that can
be conducted in a closed reaction tube
allow directly analysis of genomic DNA
without preamplification.
Genomics
M. Strerath, A. Marx*
7842 – 7849
Genotyping—From Genomic DNA to
Genotype in a Single Tube
Reviews
The smaller, the better: Metal nanoparticle
catalysis is an expanding area at the
interface between homogeneous and heterogeneous catalysis. Moreover, its applications in the synthesis of fine organic
chemicals, fuel-cell technology, and
environmental issues are of growing
importance. This Review shows the interdisciplinary character of this catalysis and
presents the main recent advances. The
picture shows the morphology of an
electrosteric stabilized nanoparticle.
Nanoparticle Catalysts
D. Astruc,* F. Lu,
J. R. Aranzaes
7852 – 7872
Nanoparticles as Recyclable Catalysts:
The Frontier between Homogeneous and
Heterogeneous Catalysis
Communications
For the USA and Canada:
ANGEWANDTE CHEMIE International
Edition (ISSN 1433-7851) is published weekly
by Wiley-VCH PO Box 191161, D 69451 Weinheim, Germany. Air freight and mailing in the
USA by Publications Expediting Inc. 200
Meacham Ave., Elmont, NY 11003. Periodicals
Angew. Chem. Int. Ed. 2005, 44, 7814 – 7825
More stable than it seems: The binary
uranium–nitrogen anion U(N3)73 was
synthesized and characterized as the
(Bu4N)3[U(N3)7] salt. The U(N3)73 ion is
the first structurally characterized heptaazide and is the first homoleptic azide of
an actinide. The crystal structure shows a
pentagonal-bipyramidal arrangement of
the azide ligands around the central
uranium(iv) atom (see structure; N: blue;
U: green).
Azide Complexes
postage paid at Jamaica NY 11431. US POSTMASTER: send address changes to Angewandte
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included. All prices are subject to local VAT/
sales tax.
M.-J. Crawford,* A. Ellern,
P. Mayer
7874 – 7878
UN213 : A Structurally Characterized
Binary Actinide Heptaazide Anion
2005 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
www.angewandte.org
7815
Angewandte
Chemie
Synthetic Methods
S. BrJse,* S. HKfener
The ligand makes it possible: The asymmetric conjugate addition of diethylzinc to
a,b-unsaturated aldehydes and ketones
Activation of CC bonds in cyclopropanes
with a cobalt complex: Methylenecyclopropanes react with one equivalent of
occurs with catalytic amounts of the
paracyclophaneketimine ligand 1 without
further additives.
[Co2(CO)8] under mild conditions to give
2-methylenecyclobutanones in moderate
to good yields (up to 85 %). The reaction
also proceeds with a catalytic amount of
the cobalt complex under an atmosphere
of CO (balloon) to give products in good
yields (up to 90 %; see scheme).
7879 – 7881
Asymmetric Conjugate Addition of
Organozinc Compounds to a,bUnsaturated Aldehydes and Ketones with
[2.2]Paracyclophaneketimine Ligands
without Added Copper Salts
CC Activation
T. Kurahashi, A. de Meijere* 7881 – 7884
CC Bond Activation by
Octacarbonyldicobalt: [3þ1]
Cocyclizations of Methylenecyclopropanes with Carbon Monoxide
Inside out: Deiodination of R*3Si4I5
(R* = SitBu3) with NaR* affords the silicon compound Si8R*6. A Si2 dumbbell(Si1–Si2) is present in this novel cluster
framework, embedded as in a sandwich
compound between two Si3R*3 rings (see
structure; the tBu methyl groups are not
shown). The Si atoms of the dumbbell are
“inverse-tetrahedrally” coordinated by
four Si atoms.
Silicon Clusters
Shedding light: Efficient activation of
cyclic nucleoside monophosphates
(cNMPs) can be achieved upon one- and
two-photon flash photolysis of novel
photolabile coumarinylmethyl esters of
cAMP and cGMP (A = adenosine,
G = guanosine) as well as their 8-bromosubstituted derivatives. The phototriggers
show high solubility in water and permit
Photoactivatable Compounds
Angew. Chem. Int. Ed. 2005, 44, 7814 – 7825
G. Fischer, V. Huch, P. Mayer, S. K. Vasisht,
M. Veith, N. Wiberg*
7884 – 7887
Si8(SitBu3)6 : A Hitherto Unknown Cluster
Structure in Silicon Chemistry
V. Hagen,* B. Dekowski, V. Nache,
R. Schmidt, D. Geißler, D. Lorenz,
J. Eichhorst, S. Keller, H. Kaneko,
K. Benndorf, B. Wiesner
7887 – 7891
space- and time-resolved investigations of
the molecular mechanisms of cyclic
nucleotide dependent processes.
Coumarinylmethyl Esters for Ultrafast
Release of High Concentrations of Cyclic
Nucleotides upon One- and Two-Photon
Photolysis
2005 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
www.angewandte.org
7817
Contents
Simple metal acetates react to give
bimetallic heterocubanes of the type
[M14yM2y O4] (see structure, M1,2 = Mn, Co,
Ni, Zn), which in turn are precursors for
the selective formation of bimetallic oxide
nanoparticles with a controlled composition. The size of the particles can be
controlled by adjusting the thermolysis
temperature.
Nanoparticle Synthesis
S. Polarz,* A. V. Orlov,
M. W. E. van den Berg,
M. Driess
7892 – 7896
Molecular Encoding at the Nanoscale:
From Complex Cubes to Bimetallic Oxides
Surface Chemistry
M. S. Alam, S. StrKmsdKrfer, V. Dremov,
P. MQller,* J. Kortus, M. Ruben,*
J.-M. Lehn*
7896 – 7900
Addressing the Metal Centers of [2 R 2]
CoII4 Grid-Type Complexes by STM/STS
The controlled deposition of grid-type
[2 R 2] CoII4 complexes onto graphite rendered free-standing 0D, 1D, and 2D
molecular arrangements, which were
examined by STM techniques. Scanning
tunneling spectroscopy (STS) investiga-
Reaction Mechanisms
S. Laimgruber, W. J. Schreier, T. Schrader,
F. Koller, W. Zinth, P. Gilch* 7901 – 7904
The Photochemistry of
o-Nitrobenzaldehyde as Seen by
Femtosecond Vibrational Spectroscopy
A ketene comes and goes: The first
intermediate in the photoredox reaction of
o-nitrobenzaldehyde (1) is identified as
Glasses
M. Eichelbaum, K. Rademann,* R. MQller,
M. Radtke, H. Riesemeier,
W. GKrner
7905 – 7909
On the Chemistry of Gold in Silicate
Glasses: Studies on a Nonthermally
Activated Growth of Gold Nanoparticles
7818
www.angewandte.org
2005 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
tions enabled the direct addressing of the
metal centers at the single-molecule level
(see image). The experimentally determined intramolecular positions of the CoII
centers are in agreement with DFT calculations of the molecule.
ketene 2. In a femtosecond IR experiment
a resonance at 2100 cm1 corresponding
to the ketene stretching vibration appears
less than one picosecond after photoexcitation. The 90-ps decay of this band is a
manifestation of a nucleophilic addition
to the C=C double bond, which is supported by other spectroscopic experiments (IR and Raman).
Gold in glass: Activating gold silicate
glasses with synchrotron X-rays results in
the spatial reduction of cationic gold to
gold atoms. Subsequent annealing allows
the growth of nanoparticles with defined
sizes and tailored optical properties (see
picture). This opens up new vistas in
functionalizing chemically and mechanically stable glasses for integrated
nanophotonic applications.
Angew. Chem. Int. Ed. 2005, 44, 7814 – 7825
Angewandte
Chemie
Copolymerization
M. Bornand, P. Chen*
Back and forth like a metronome is how
the carbene moiety swings in a dual-site
catalyst which produces a predominantly
alternating copolymer of norbornene and
cyclooctene from a one-pot reaction of
appropriate mixtures of the two monomers (see scheme). The alternating
sequence of the polymer was confirmed
by NMR spectroscopy and gel-permeation
gravimetric analysis.
Inside out: Corrosive pitting and etching
can be combined in a simple, elegant, and
powerful method to transform singlecrystal Pd nanocubes into nanoboxes (see
SEM image) and nanocages in a one-pot
synthesis without the involvement of
exotic templates. Emptying the interiors
enables the surface plasmon resonance
peaks of the Pd nanostructures to be
tuned from 410 to 520 nm.
7909 – 7911
Mechanism-Based Design of a ROMP
Catalyst for Sequence-Selective
Copolymerization
Nanostructures
Y. Xiong, B. Wiley, J. Chen, Z.-Y. Li, Y. Yin,
Y. Xia*
7913 – 7917
Corrosion-Based Synthesis of SingleCrystal Pd Nanoboxes and Nanocages
and Their Surface Plasmon Properties
Natural Product Synthesis
K. C. Nicolaou,* Y. H. Lim,
C. D. Papageorgiou,
J. L. Piper
The cytoskyrin cascade: The total
syntheses of the bisanthraquinones 2
(þ)-2,2’-epi-cytoskyrin A (R2 = OMe) and
(þ)-rugulosin (R2 = Me) has been
achieved through a cascade sequence
from anthradihydroquinone monomeric
units 1.
7917 – 7921
Total Synthesis of (þ)-Rugulosin and
(þ)-2,2’-epi-Cytoskyrin A through Cascade
Reactions
Electrooptic Systems
H. Kang, A. Facchetti, P. Zhu, H. Jiang,
Y. Yang, E. Cariati, S. Righetto, R. Ugo,
C. Zuccaccia, A. Macchioni, C. L. Stern,
Z. Liu, S.-T. Ho, T. J. Marks* 7922 – 7925
Nonlinear optics: Twisted p-electron
system electrooptic (EO) chromophores
with exceptional molecular hyperpolarizabilities (488 000 R 1048 esu at
1907 nm) were designed and synthesized.
Crystallographic analysis reveals large
Angew. Chem. Int. Ed. 2005, 44, 7814 – 7825
twist angles and a highly charge-separated
zwitterionic ground state. Experiments on
poled host–guest polymers containing
these chromophores show them to be
promising candidates for EO applications.
Exceptional Molecular
Hyperpolarizabilities in Twisted
p-Electron System Chromophores
2005 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
www.angewandte.org
7819
Contents
Sensors
K.-J. Chang, D. Moon, M. S. Lah,
K.-S. Jeong*
7926 – 7929
Indole-Based Macrocycles as a Class of
Receptors for Anions
Nanotubes
C. Zhi,* Y. Bando, C. Tang, S. Honda,
K. Sato, H. Kuwahara,
D. Golberg
7929 – 7932
Characteristics of Boron Nitride
Nanotube–Polyaniline Composites
Shift work: The identity of an anion
complexed to indole-based macrocycles
can be determined by the NMR chemical
shift of the NH protons (see picture). The
difference in the chemical shifts arises
from a difference in the strength of the
hydrogen-bonding interactions between
the macrocycles and the anions.
A self-organized film of boron nitride
nanotube–polyaniline (BNNT–PANI)
composite is fabricated by using a simple
solution method. The BNNTs are fully
coated with PANI as a result of strong
interactions between these components
(see picture). Mechanically tough, BNNTs
may have potential as stabilizing additives
to PANI or other polymers.
Nanotubes
Playing with the band: Long alkyl chains
are bound to boron nitride nanotubes
(BNNTs) from the reaction of stearoyl
chloride with amino groups on the
BNNTs; the resulting functionalized
BNNTs (see picture) are soluble in many
organic solvents. Cathodoluminescence
and UV/Vis absorption experiments indicate that the long alkyl chains may induce
drastic changes in the band structure of
BNNTs.
C. Zhi,* Y. Bando, C. Tang, S. Honda,
K. Sato, H. Kuwahara,
D. Golberg
7932 – 7935
Covalent Functionalization: Towards
Soluble Multiwalled Boron Nitride
Nanotubes
Sensors
A. Buryak, K. Severin*
7935 – 7938
Dynamic Combinatorial Libraries of Dye
Complexes as Sensors
A simple solution: Simply dissolving three
commercially available dyes and two
metal salts in a buffer is sufficient to
create a sensor which allows the identifi-
7820
www.angewandte.org
2005 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
cation of dipeptides with high selectivity
by using UV/Vis spectroscopy (see picture
for the adaptive behaviour of a dynamic
mixture of colored compounds A–H).
Angew. Chem. Int. Ed. 2005, 44, 7814 – 7825
Angewandte
Chemie
Cluster Compounds
Metallomacrocyclic arrays containing
eight copper(ii) centers (see picture;
green Cu, blue N, red O, yellow S) were
obtained by using a heptadentate thiocarbohydrazone ligand with a particular
conformational and configurational flexibility, as well as an appropriate arrangement of metal-binding sites, coordination
ability, and acid–base properties.
D. Dragancea, V. B. Arion,* S. Shova,
E. Rentschler,
N. V. Gerbeleu*
7938 – 7942
Azine-Bridged Octanuclear Copper(ii)
Complexes Assembled with a OneStranded Ditopic Thiocarbohydrazone
Ligand
Caught in the net: A series of mixed
copper(i)–silver(i) cyanide complexes of
the form A[Ag2Cu(CN)4] (A = K, Rb, Cs)
have been found to form interpenetrating
layer structures and three-dimensional
networks (see picture). Two different
forms of the Rb and Cs compounds are
observed, which are both topological
isomers and polymorphs.
Network Structures
A. M. Chippindale,* S. M. Cheyne,
S. J. Hibble*
7942 – 7946
Interpenetrating Copper–Silver
Cyanometallate Networks: Polymorphs
and Topological Isomers
Protein Chemistry
J. W. Back,* O. David, G. Kramer,
G. Masson, P. T. Kasper, L. J. de Koning,
L. de Jong, J. H. van Maarseveen,
C. G. de Koster
7946 – 7950
A gentle break: Cleavage of peptides
containing the non-natural but proteogenic amino acid azido homoalanine can
be accomplished by phosphine- or dithiolmediated reductive activation of the azide
Quality control: UDP-glucose:glycoprotein glucosyltransferase (UGGT) works as
the folding sensor in glycoprotein quality
control. It glucosylates the Man9GlcNAc2
of misfolded glycoproteins to produce
Glc1Man9GlcNAc2, which is a ligand of
calnexin and calreticulin. The synthetic
substrate Man9GlcNAc2-MTX can be
used for the quantitative analysis of
UGGT. UDP = uridine 5’-diphosphate,
Glc = d-glucose, Man = d-mannose,
GlcNAc = N-acetyl-d-glucosamine,
MTX = methotrexate.
Angew. Chem. Int. Ed. 2005, 44, 7814 – 7825
functionality in aqueous buffers (see
scheme). The resulting C-terminal lactone
of one peptide fragment allows facile
further derivatization.
Mild and Chemoselective Peptide-Bond
Cleavage of Peptides and Proteins at
Azido Homoalanine
Protein Folding
K. Totani, Y. Ihara, I. Matsuo, H. Koshino,
Y. Ito*
7950 – 7954
Synthetic Substrates for an Endoplasmic
Reticulum Protein-Folding Sensor,
UDP-Glucose: Glycoprotein
Glucosyltransferase
2005 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
www.angewandte.org
7821
Contents
Self-Assembly
K. Zeckert, J. Hamacek, J.-M. Senegas,
N. Dalla-Favera, S. Floquet,
G. Bernardinelli,*
C. Piguet*
7954 – 7958
Predictions, Synthetic Strategy, and
Isolation of a Linear Tetrametallic TripleStranded Lanthanide Helicate
Complex twists: Following theoretical
thermodynamic predictions, it is seen that
the tetrametallic triple-stranded lanthanide helicate [Ln4L3]12+ (see structure)
dominates the speciation in solution at
Crown Compounds
It’s the crown that does it: The autoionization of [TiF4] has been promoted by
complexation with [15]crown-5 to produce
[TiF2([15]crown-5)][Ti4F18], which contains
the new tetrahedral ion [Ti4F18]2 (see
picture). The thermodynamics of the
[Ti4F18]2 ion relative to the [Ti2F9] ion in
the gas, solution, and solid states were
calculated by density functional methods.
A. Decken, H. D. B. Jenkins,* C. Knapp,
G. B. Nikiforov, J. Passmore,*
J. M. Rautiainen
7958 – 7961
The Autoionization of [TiF4] by Cation
Complexation with [15]Crown-5 To Give
[TiF2([15]crown-5)][Ti4F18] Containing the
Tetrahedral [Ti4F18]2 Ion
Multicomponent Arylation
L. El KaUm,* L. Grimaud,*
J. Oble
A Smiles rearrangement is the key step in
the efficient coupling of primary amines
with isocyanides, carbonyl compounds,
and electron-deficient substituted phenols to form N-aryl amines (see picture).
The presence of a nitro or ester group on
the resulting adduct allows applications in
heterocyclic synthesis.
7961 – 7964
Phenol Ugi–Smiles Systems: Strategies
for the Multicomponent N-Arylation of
Primary Amines with Isocyanides,
Aldehydes, and Phenols
Organogels
K. T. Kim, C. Park, G. W. M. Vandermeulen,
D. A. Rider, C. Kim, M. A. Winnik,*
I. Manners*
7964 – 7968
Gelation of Helical Polypeptide–Random
Coil Diblock Copolymers by a Nanoribbon
Mechanism
7822
www.angewandte.org
millimolar concentrations, despite its
high positive charge. Isolation of the
europium complex in the solid state
unambiguously establishes its nanometric triple-helical structure.
Thermoreversible gelation of diblock
copolymers of a helical polypeptide,
poly(g-benzyl-l-glutamate) and randomcoil polymers such as polyferrocenylsilanes in dilute solution has been discovered (see picture). A new mechanism for
self-assembly of block copolymers of
helical polypeptides is proposed.
2005 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
Angew. Chem. Int. Ed. 2005, 44, 7814 – 7825
Angewandte
Chemie
Spring-loaded polymers: The nanohelical
structure of poly(l-lactide) (PLLA) in the
polystyrene (PS) matrix of chiral PS-PLLA
block copolymers displays springlike
behavior in response to an applied stimulus. The self-assembled nanohelices
are transformed into cylinders by crystallization or shearing (see picture). This
thermally reversible phase behavior may
be used for manipulating switchable
nanohelical structures.
Switchable Nanostructures
Y.-W. Chiang, R.-M. Ho,* B.-T. Ko,
C.-C. Lin
7969 – 7972
Springlike Nanohelical Structures in
Chiral Block Copolymers
Synthetic Methods
L. Ducry,* D. M. Roberge*
Scaled-down approach: The nitration of
phenol is an autocatalytic, strongly exothermic reaction and is thus difficult to
handle on an industrial scale. Continuous
nitration in a microreactor (see picture)
affords higher yields and enhanced process safety, thanks to good heat exchange
and mixing properties, as well as rapid
radical propagation under sufficiently
harsh conditions.
7972 – 7975
Controlled Autocatalytic Nitration of
Phenol in a Microreactor
Asymmetric Synthesis
F. Fini, V. Sgarzani, D. Pettersen,
R. P. Herrera,* L. Bernardi,*
7975 – 7978
A. Ricci
A general approach to the catalytic asymmetric aza-Henry reaction has been
developed. The combination of a commercially available phase-transfer catalyst
(PTC) with a base is able to promote the
in situ formation of N-carbamoyl imines
Aluminum-stabilized copper colloids with
a size of about 5 nm (see picture) are the
key to a quasi-homogeneous version of
the heterogeneously catalyzed synthesis
of methanol from synthesis gas over
Cu/ZnO/Al2O3. The catalyst productivity
is very high in spite of the absence of
ZnO.
Angew. Chem. Int. Ed. 2005, 44, 7814 – 7825
from a-amido sulfones and activate
nitromethane towards the asymmetric
addition reaction, thus furnishing N-carbamoyl-protected b-nitroamines in good
yields and with up to 98 % ee (see
scheme; PG = protecting group).
Phase-Transfer-Catalyzed Asymmetric
Aza-Henry Reaction Using N-Carbamoyl
Imines Generated In Situ from a-Amido
Sulfones
Catalyst Research
S. Vukojević, O. Trapp, J.-D. Grunwaldt,
C. Kiener, F. SchQth*
7978 – 7981
Quasi-Homogeneous Methanol Synthesis
Over Highly Active Copper Nanoparticles
2005 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
www.angewandte.org
7823
Contents
Natural Product Synthesis
T. K. M. Shing,* Y. Y. Yeung
7981 – 7984
Total Synthesis of ()-Samaderine Y from
(S)-(þ)-Carvone
Elegant, efficient, and enantiospecific
describe the first total synthesis of the
quassinoid ()-samaderine Y (see
scheme), which has been shown to dis-
Substituted Fullerenes
I. E. Kareev, I. V. Kuvychko, A. A. Popov,
S. F. Lebedkin, S. M. Miller,
O. P. Anderson, S. H. Strauss,*
O. V. Boltalina*
7984 – 7987
High-Temperature Synthesis of the
Surprisingly Stable C1-C70(CF3)10 Isomer
with a para7–meta–para Ribbon of Nine
C6(CF3)2 Edge-Sharing Hexagons
play in vitro cytotoxicity and is of interest
as a potential antitumor agent. Its
synthesis has been accomplished from
(S)-(þ)-carvone in 21 steps.
From the equator to the pole: The hightemperature, high-yield C1 isomer of
C70(CF3)10 has an unprecedented structure. The CF3 groups belong to a para7–
meta–para ribbon of edge-sharing C6(CF3)2 hexagons, which wraps around the
equator of the C70 cage and then climbs up
to one of the poles. Calculations demonstrate that this isomer is more stable than
the structures observed for C70Br10 and
C70(tBuOO)10.
Photofunctional Materials
Y. Du, M. Yang, J. Yu,* Q. Pan,
7988 – 7990
R. Xu*
An Unexpected Photoelectronic Effect
from [Co(en)3]2(Zr2F12)(SiF6)·4 H2O, a
Compound Containing an H-Bonded
Assembly of Discrete [Co(en)3]3+,
(Zr2F12)4, and (SiF6)2 Ions
Hydrogen-bonded network: A hydrothermal synthesis delivers the titled compound, which consists of an H-bonded
network of discrete [Co(en)3]3+, (Zr2F12)4,
and (SiF6)2 ions. It exhibits an unexpected photoelectronic effect in the near-UV
region (see figure).
Service
7824
www.angewandte.org
2005 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
Keywords
7992
Authors
7993
Vacancies
7831
Index
7997
Preview
8077
Angew. Chem. Int. Ed. 2005, 44, 7814 – 7825
Angewandte
Chemie
The editorial staff and the
publishers thank all readers,
authors, referees, and
advertisers for their interest
and support over the past
year and wish them all a
happy new year.
Angew. Chem. Int. Ed. 2005, 44, 7814 – 7825
2005 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
www.angewandte.org
7825
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