Transition metal complexes of γ-mercaptoalkylpiperidines

Heribert Barrera, Joan Sola, Josef M. Viñas

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Complexes with 1-methyl-3-(mercaptomethyl)piperidine (LH) and 1-methyl-2-(2-mercaptoethyl)piperidine (L′H) Ligands in their thiolato (R), and N-protonated (HR) or N-methylated (MeR) zwitterionic form, of stoichiometry MR2 (M=Ni, R=L or L′; M=Cd, R=L), MR (M=Cu or Ag, R=L and L′), [Ni(MeR)2]I2 · nH2O (R=L, n=1; R=L′, n=2), [Ni(HR)2]X2 (R=L or L′, X=ClO4; R=L′, X=Br), and [Ag(HR)] ClO4 (R=L′) have been prepared and characterized. According to i.r. and electronic spectra, and magnetic measurements the nickel complexes exhibit polymeric frameworks built up from mercapto-bridged metal atoms in square-planar environments. Complexes with copper, silver, and cadmium exhibit similar polymeric arrangements through bridging sulphur atoms but with a different geometry at the metal centers, the first two being mainly linear, as anticipated, and the latter tetrahedral. In no case does coordination via nitrogen take place and therefore these ligands behave simply as mercaptides. © 1985 VCH Verlagsgesellschaft mbH.
Original languageEnglish
Pages (from-to)233-235
JournalTransition Metal Chemistry
Issue number6
Publication statusPublished - 1 Jun 1985


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