Coordination compounds of nickel with trithiocyanuric acid Part III. Crystal and molecular structure of (Ni(bapen)(ttcH)) ?2H O

Coordination compounds of compositions [Ni(bapen)(ttcH)]?2H O (1), [Ni(bappn)(ttcH)] (2), [Ni(mdpta)(ttcH)(H O)] (3), 2 2 [Ni(nphen) (ttcH)]?H O (4), [Ni(nphen) ](ttcH)?2H O (5), [Ni(ampy) (ttcH)]?H O (6) and [Ni(aepy) (ttcH)]?2H O (7), where bapen5 2 2 3 2 2 2 2 2 N,N9-bis(3-aminopropyl)ethylenediamine, bappn5N,N9-bis(3-aminopropyl)-1,3-propanediamine, mdpta53,39-diamino-N-methyldipropylamine, nphen55-nitro-1,10-phenanthroline, ampy52-aminomethylpyridine, aepy52-aminoethylpyridine and ttcH 5trithiocyanuric 3 acid, have been prepared. The crystal and molecular structure of (1) was determined by X-ray analysis. Nickel atom is six-coordinated by four N atoms of amine and S and N donor atoms of trithiocyanuric dianion, whereas two water molecules are situated outside the 21 31 coordination sphere. Cyclic voltammetry showed that the complexes undergo an oxidation attributable to Ni →Ni in the range 550–950 mV. The magnetic behaviour of (6) and (7) has been studied in the 291–94 K temperature range. Magnetic susceptibility follows the Curie-Weiss law.  1999 Elsevier Science Ltd. All rights reserved.