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2005
Vanadium
I 5000
26- 013
Synthesis of Elliptical Vanadoborates Housing Bimetallic Centers
[Zn4(B 2O4H2)(V10B28O74 H8)]8- and [Mn4(C2O4)(V10B28O74 H8)]10-. — The structures of
the compounds (III), (V), and (VII) are determined by single crystal XRD. They contain
elliptical (V10B28O74 H8) clusters and pairs of bimetallic Zn2 or Mn2 units. Compound
(III) crystallizes in the monoclinic space group P21/n with Z = 2, compound (V) in the
orthorhombic space group Pnnm with Z = 2, and compound (VII) in the tetragonal
space group P42/mnm with Z = 2. The unexpected presence of oxalate groups in (V) is
suggested to result from the oxidation of ethylenediamine by KMnO4. — (WU, M.;
LAW, T. S.-C.; SUNG, H. H.-Y.; CAI, J.; WILLIAMS*, I. D.; Chem. Commun.
(Cambridge) 2005, 14, 1827-1829; Dep. Chem., Hong Kong Univ. Sci. Technol.,
Kowloon, Hong Kong; Eng.) — W. Pewestorf
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