6533b862fe1ef96bd12c6aeb

RESEARCH PRODUCT

Über polystannane

Stefan AdamsBernd MathiaschMartin Dräger

subject

chemistry.chemical_classificationChemistryStereochemistryOrganic Chemistrychemistry.chemical_elementNuclear magnetic resonance spectroscopyCrystal structureBiochemistryInorganic ChemistryCrystallographyX-ray crystallographyMaterials ChemistryMoleculePhysical and Theoretical ChemistryTinConformational isomerismInorganic compoundStoichiometry

description

Abstract The three compounds Ph4Sn2(X3CCO2)2 were synthesized from Ph2SnH2 and X3CCOOH (X = H, Cl) or by cleavage of two phenyl groups in Ph6Sn2 with Stoichiometric amounts of X3CCOOH (X = Cl, F). The crystal structures (R = 0.041, 0.030, 0.058) show that the Ph4Sn2 units are bridged by two isobidentate acetates resulting in five-coordinated tin atoms. Five crystallographically independent centrosymmetric molecules form three distinct conformers. Bonding parameters (compared with Ph6Sn2): distances d(SnSn) 269, 271, 272, 277 pm; NMR couplings (CDCl3 solution) 1J(SnSn) 16870, 9443, 12915, 4480 Hz; stretching vibrations ν(SnSn) 152, 155, 157, 159 cm−. The ion pairs [Ph4Sn2]2+ [(X3CCO2)2]2− are discussed.

yearjournalcountryeditionlanguage
1987-06-01Journal of Organometallic Chemistry
https://doi.org/10.1016/0022-328x(87)80155-9