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MICHELANGELO SCOPELLITI

Preparation and structural studies on diorganotin(IV) complexes of N-nitroso-N-phenylhydroxylaminates

  • Authors: SZORCSIK A; NAGY L; KOKENY I; DEAK A; SCOPELLITI M; FIORE T; PELLERITO L
  • Publication year: 2007
  • Type: Articolo in rivista (Articolo in rivista)
  • OA Link: http://hdl.handle.net/10447/33874

Abstract

Diorganotin(IV)-complexes of the N-nitroso-N-phenylhydroxylaminates (hereinafter cupf), Et2Sn(cupf)2 (1), Bu2Sn(cupf)2 (2), {[Bu2Sn(cupf)]2O}2 (3), t-Bu2Sn(cupf)2 (4) and Oc2Sn(cupf)2 (5, 6) were prepared and characterised by FT-IR and Mo¨ssbauer spectroscopic measurements. The binding modes of the ligand were identified by FT-IR spectroscopy, and it was found that the ligand is coordinated in chelating or bridging mode to the organotin(IV) center. The 119Sn Mo¨ssbauer and FT-IR studies support the formation of trans-Oh (1–6) structures. The X-ray diffraction analysis of 4 revealed that the tin centre is in a skew-trapezoidal geometry defined by four donors derived from the cupferronato ligands and two carbon atoms from the tin-bound tbutyl substituents. The 119Sn NMR investigations indicate that in solution 4 retains its hexacoordinated nature.