SYNTHESIS AND CRYSTAL-STRUCTURES OF DINUCLEAR OXOTUNGSTEN(VI) DIOLATO COMPLEXES

: LEHTONEN A, SILLANPAA R

Publisher: ROYAL SOC CHEMISTRY

: 1994

: Dalton Transactions

: JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS

: J CHEM SOC DALTON

: 14

: 2119

: 2124

: 6

: 0300-9246

DOI: https://doi.org/10.1039/dt9940002119

Dinuclear complexes [W2O3L2(HL)2] [H2L = 2,3-dimethylbutane-2,3-diol (H2pin), trans-cycloheptane-1,2-diol (H2chpd) or trans-cyclooctane-1,2-diol (H2Cocd)] were prepared in high yield by hydrolysis of [W(eg)(pin)2] (H2eg = ethane-1,2-diolate), [W(chpd)3] and [W(cocd)3] in alcoholic solution. X-Ray diffraction studies showed that each tungsten(VI) ion is bonded to one diolate, one hydrogendiolate, one terminal and one bridging oxide ligand. Two tungsten-centred units are also linked together by intramolecular O...-O hydrogen bonds between the diolate and hydrogendiolate ligands. The geometry of the dinuclear unit is dependent on the nature of the diolate ligands.