Coordination compounds of nickel with trithiocyanuric acid: Part III. Crystal and molecular structure of [Ni(bapen)(ttcH)]·2H2O (bapen=N,N′-bis(3-aminopropyl)ethylenediamine, ttcH3=trithiocyanuric acid)

Abstract Coordination compounds of compositions [Ni(bapen)(ttcH)]·2H 2 O (1) , [Ni(bappn)(ttcH)] (2) , [Ni(mdpta)(ttcH)(H 2 O)] (3) , [Ni(nphen) 2 (ttcH)]·H 2 O (4) , [Ni(nphen) 3 ](ttcH)·2H 2 O (5) , [Ni(ampy) 2 (ttcH)]·H 2 O (6) and [Ni(aepy) 2 (ttcH)]·2H 2 O (7) , where bapen= N,N ′-bis(3-aminopropyl)ethylenediamine, bappn=N,N′-bis(3-aminopropyl)-1,3-propanediamine, mdpta=3,3′-diamino- N -methyldipropylamine, nphen=5-nitro-1,10-phenanthroline, ampy=2-aminomethylpyridine, aepy=2-aminoethylpyridine and ttcH 3 =trithiocyanuric 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 coordination sphere. Cyclic voltammetry showed that the complexes undergo an oxidation attributable to Ni 2+ →Ni 3+ 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.