Polymeric structure and solid NMR spectra of cadmuim(II) dialkyldithiophosphates (alkyl = propyl, butyl, isopropyl and isobutyl)
2003 (English)In: Chinese Journal of Chemistry, Vol. 21, no 3, 291-5 p.Article in journal (Refereed) Published
By dropwise adding thio ligands to concentrated aqueous solutions of Cd(ClO4)(2).6H(2)O, Polymeric complexes, Cd(II) O, O'-dipropyl- dithiophosphate (1), O, O'-dibutyl-dithiophosphate (2), O, O'- diisopropyl-dithiophosphate (3) and O, O'-diisobutyl-dithiophosphate (4) were obtained. The structure of 4 was determined by Xray diffraction analysis, showing that the metal ion sits in distorted tetrahedral sulphur coordination sphere and that the eight-membered bimetallic rings take the twist chair and boat conformations, alternately. Based on facts that the S(1)-Cd bond length [0.25099(12) ran] is shorter than the other S-Cd bond length [0.25399(12)-0.25701(18) nm] and that the S(1)-involving angles [113.45(4)degrees-118.43(5)degrees] are systematically larger than the normal angles of a tetrahedron, the ligands are hypothesized to be erratically functionalized to Cd(H). To certify the steric nonequivalence of ligands, the compounds were investigated by solid C-13, P-31 and Cd-113 NMR spectroscopy.
Place, publisher, year, edition, pages
2003. Vol. 21, no 3, 291-5 p.
IdentifiersURN: urn:nbn:se:umu:diva-9954OAI: oai:DiVA.org:umu-9954DiVA: diva2:149625