title: Natural Abundance (15)N and           (13)C CP/MAS NMR of Dialkyldithiocarbamate Compounds with Ni(II) and Zn(II).
abstract: Different symmetrically substituted and cyclic dialkydithiocarbamate (R=CH(3), C(2)H(5), C(3)H(7), i-C(3)H(7), C(4)H(9), i-C(4)H(9) and R(2)=(CH(2))(5), (CH(2))(6), (CH(2))(4)O) compounds, such as tetraalkylthiuram disulfides, mononuclear nickel(II), binuclear zinc(II) and heteropolynuclear complexes and their adducts (both non-solvated and solvated forms) with planar and non-planar N-donor organic bases, have been prepared and studied by means of natural abundance (13)C and (15)N CP/MAS NMR spectroscopy. Useful correlations between molecular structures and (13)C and (15)N chemical shifts in these compounds have been established and assignments to carbon and nitrogen sites in resolved molecular structures have been suggested. A combination of the mesomeric effect of dithiocarbamate groups and the (+)inductive effect of alkyl substituents at the nitrogen atoms has been discussed in interpretations of (13)C and (15)N chemical shifts of the studied compounds. A high sensitivity of (15)N chemical shift to the subtle structural differences of both dithiocarbamate groups and N-donor molecules has been revealed. Several remarkable cases of conformational isomerism have been recognized for both dithiocarbamate complexes and their adducts.
authors.affiliation: Amur Integrated Research Institute, Far Eastern Branch of the Russian Academy of Sciences, Amur Region, 675000, Blagoveschensk, Russia, alexander.v.ivanov@chemist.com.
authors.forename: Alexander I
authors.initials: AI
authors.lastname: Ivanov
authors.forename: Oleg N
authors.initials: ON
authors.lastname: Antzutkin