Abstract
(PPh4)2[(SN)ReCl3(μ-N)(μ-NSN)ReCl3(THF)] – a Nitrido-Thionitrosyl-Dinitridosulfato-Complex of Rhenium The title compound has been prepared from PPh4[ReVIICl4(NSCl)2] with excess N(SiMe3)3 in dichloromethane solution to give red-brown single crystals after recrystallisation from acetonitrile/THF solutions. As a by-product PPh4[ReNCl4] is formed. (PPh4)2[(SN)ReCl3(μ-N)(μ-NSN)ReCl3(THF)] (1): Space group P21/n, Z = 4, lattice dimensions at –80 °C: a = 1024.1(1), b = 2350.2(1), c = 2315.4(2) pm, β = 94.09(1)°, R1 = 0.0403. In the complex anion of 1 the rhenium atoms are connected by an asymmetric Re≡N–Re bridge as well as by a (NSN)4–-bridge to form a planar Re2N(NSN) six-membered heterocycle. Both rhenium atoms are coordinated by three chlorine atoms, one of them by a thionitrosyl ligand, the other one by the oxygen atom of a thf molecule.
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