Investigation into the reactivity of the coordinatively unsaturated phosphonodithioato [Ni(MeOpdt)(2)] towards 2,4,6-tris(2-pyridyl)-1,3,5-triazine: goals and achievements

Aragoni, M. Carla, Arca, Massimiliano, Devillanova, Francesco A., Hursthouse, Michael B., Huth, Susanne L., Isaia, FrancescoF., Lippolis, Vito, Mancini, Annalisa, Soddua, Serena and Verani, Gaetano (2007) Investigation into the reactivity of the coordinatively unsaturated phosphonodithioato [Ni(MeOpdt)(2)] towards 2,4,6-tris(2-pyridyl)-1,3,5-triazine: goals and achievements. Dalton Transactions, (21), 2127-2134. (doi:10.1039/b701458a).

Abstract

The reaction between the coordinatively unsaturated phosphonodithioato complex [Ni(MeOpdt)2] ( 1) [MeOpdt = (MeO)(4-MeOC6H4)PS2–] and tptz [2,4,6-tris(2-pyridyl)-1,3,5-triazine] has been investigated. Spectrophotometric and conductometric titrations showed the formation of a neutral and an ionic species, i.e. [Ni(MeOdtp)2(tptz)] ( 2) and [Ni(tptz)2](MeOdtp)2 ( 3), in correspondence to 1 : 1 and 2 : 1 tptz : 1 ratios, respectively. XRD studies confirmed the formation of both complexes isolated in the compounds 2·MeOH and 3·4H2O. In the neutral complex 2 the central NiII ion features a distorted octahedral coordination, achieved through three N-atoms of tptz and three S-atoms belonging to two MeOpdt anions, one of which unexpectedly acts as a monodentate S-donor. In 3·4H2O, the two phosphonodithioato anions are non-coordinating and counterbalance the charge of the [Ni(tptz)2]2+ distorted octahedral complex. From the reaction of 2 with I2 and Br2, crystals of [Ni(tptz)2](I3)2 ( 5) and [Ni(tptz)Br(µ-Br)]2 ( 6) have been obtained. The dinuclear complex 6 features a structure showing tubular canals with openings of about 6 × 6 Å.

This record has no associated files available for download.

Contributors

Download statistics