Synthesis and Spectroscopic Characterization of Some New Oxalato Snph2x (X=Cl, Ncs, Ncse) Containing Derivatives and Adduct
作者:Kochikpa A. Okio、Alioune Fall、Hayat Qamar-Kane、Yaya Sow、Libasse Diop、Lamine A. Diop、Umberto Russo、A. Wattiaux
DOI:10.1515/mgmc.2010.33.1-2.53
日期:2010.1
Bis(dicyclohexylammonium) (oxalato)(pyridine-2,6-dicarboxylato)dibutylstannate 3.5 hydrate, the first crystallographic example of a mixed-chelate diorganotin(IV) compound
作者:Seik Weng Ng
DOI:10.1016/s0022-328x(99)00183-7
日期:1999.8
Bis(dicyclohexylammonium) (oxalato)(pyridine-2,6-dicarboxylato)dibutylstannate 3.5 hydrate is assigned a seven-coordinate geometry at the tin atom from solid-state spectroscopic measurements (CP/MAS delta(Sn-119) = -486 ppm: (119m)Mossbauer Delta = 4.15 mm s(-1)). and the assignment has been confirmed by low-temperature X-ray diffraction analysis. The ammonium stannate crystallizes as two independent ion pairs. In both anions, the tin atom is chelated by the pyridine-2,6-dicarboxylato and oxalato dianions. whose donor ends comprise the pentagonal plane of the trans-C2SnNO4 pentagonal bipyramidal coordination polyhedron. The dibutyltin skeleton is almost linear (C-Sn-C = 173.9(2), 174.6(2)degrees); the linearity is preserved in solution (\(1)J(Sn-119-C-13)\ = 1167.8 Hz in chloroform). (C) 1999 Elsevier Science S.A. All rights reserved.