title: Isopolyoxometalates derived from arylstibonic acids with "reverse-Keggin ion" structures based on [M(RSb)12O28] cores, M = Co(II) or Zn(II).
abstract: The preparations and structures are described of four new polyoxostibonates, [Co(p-MeC(6)H(4)Sb)(12)O(28){Co(H(2)O)(3)}(4)]Cl(2)·6H(2)O, [Co(p-ClC(6)H(4)Sb)(12)O(28){Co(H(2)O)(3)}(4)]Cl(2)·22H(2)O, (PhCH(2)NMe(3))(2)[Zn(p-ClC(6)H(4)Sb)(12)O(28)Zn(4)Cl(2.54)Br(1.46)]·8MeCN·H(2)O and [BaCoH(4)(p-MeC(6)H(4)Sb)O(28)]·5H(2)O. Each of these has a framework of 12 (RSb) groups linked by 28 O atoms, with one transition metal ion in a tetrahedral site in the centre. Other metal ions are coordinated to the polyhedral faces. Three of the complexes have the ε Keggin ion geometry, while the fourth is a δ isomer.
authors: Chemistry Department, University of Waikato, Private Bag 3105, Hamilton 3240, New Zealand. chem0021@waikato.ac.nz
authors: Brian K
authors: BK
authors: Nicholson
authors: Christopher J
authors: CJ
authors: Clark
authors: Shane G
authors: SG
authors: Telfer
authors: Tania
authors: T
authors: Groutso
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D056831:Coordination Complexes / Q000138:chemical synthesis / Q000737:chemistry; D018360:Crystallography, X-Ray; D007477:Ions / Q000737:chemistry; D008968:Molecular Conformation; D017973:Tungsten Compounds / Q000737:chemistry*; D015032:Zinc / Q000737:chemistry*; D000099294:Polyoxometalates
chemical_list: D003035:Cobalt; D056831:Coordination Complexes; D007477:Ions; D017973:Tungsten Compounds; D015032:Zinc; C102296:polyoxometalate I; D000099294:Polyoxometalates