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Three New Organically Templated Polyoxomolybdates with Capping Selenite Anions
Author(s) -
Feng MeiLing,
Mao JiangGao
Publication year - 2004
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200400246
Subject(s) - chemistry , octahedron , crystallography , cluster (spacecraft) , denticity , hydrogen bond , amide , selenium , hydrothermal circulation , molybdenum , ion , stereochemistry , crystal structure , molecule , inorganic chemistry , organic chemistry , seismology , computer science , programming language , geology
Three new organically templated polyoxomolybdates with selenite anions as capping groups have been synthesized by hydrothermal reactions and structurally characterized. The structure of {Hbipy} 3 {KMo 4 O 13 (SeO 3 )} ( 1 ; bipy = 4,4′‐bipyridine) features a 1D anionic double chain of {KMo 4 O 13 (SeO 3 )} 3− units. Four Mo VI O 6 octahedra in compound 1 form a planar Mo 4 O 13 cluster unit through corner‐, edge‐ and face‐sharing. The Mo 4 O 13 cluster unit is further capped by an Se IV O 3 group in a bidentate fashion. These monocapped cluster units are further interconnected by bridging K + cations into a 1D double chain. Both {H 2 bipy} 2 {Mo 5 O 15 (SeO 3 ) 2 }·H 2 O ( 2 ) and {H 2 pip} 2 {Mo 5 O 15 (SeO 3 ) 2 }·3H 2 O ( 3 ; pip = piperazine) contain a bicapped Mo 5 O 15 cluster unit in which five Mo VI O 6 octahedra form a planar Mo 5 O 15 cluster unit through edge‐ and corner‐sharing, with the two Se IV O 3 anions as tridentate capping groups on the two open sides of the cluster unit to form an {Mo 5 O 15 (SeO 3 ) 2 } 4− anion. The {Mo 5 O 15 (SeO 3 ) 2 } 4− cluster anions in compounds 2 and 3 are further inter‐linked by the organic templates through hydrogen bonds to form a 2D layer. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)