New water-soluble rhenium complexes with 1,3,5-triaza-7-phosphaadamantane (PTA) - X-ray crystal structures of [ReNCl2(PTA)(3)], [ReO2Cl(PTA)(3)], [ReCl3(PTA)(2)(PPh3)], and [Re2N2Cl3(Et(2)dtc)(PTA)(4)]

摘要

The new water-soluble nitrido complex [ReNCl2(PTA)(3)] (1) was obtained by treatment of [ReNCl2(PPh3)21 with four equivalents of PTA (1,3,5-triaza-7-phosphaadamantane). The reaction of [ReOCl2X(PPh3)(2)] (X = Cl-, EtO-) with six equivalents of PTA gave the neutral dioxido species [ReO2Cl-(PTA)(3)] (2). The formation of a rhenium(III) species of formula [ReCl3(PTA)(2)(PPh3)] (3) is also described. The reaction of 1 with Na[Et(2)dtc] (Et(2)dtc = N,N-diethyldithiocarbamate) yielded the neutral compound [ReNCl(Et(2)dtc)(PTA)(2)] (4). Recrystallization of 4 afforded an unexpected dinuclear species [Re2N2Cl3(Et(2)dtc)(PTA)(4)] (5), containing an asymmetric Re N-Re group. The nitrido compound [ReN(Et(2)dtc)(2)(PTA)] (6), was obtained by adding two equivalents of Na[Et(2)dtc] to complex 1 or one equivalent to complex 4. The X-ray crystal structures of the new PTA complexes 1, 2, 3, and 5 have been determined. (C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008.