Synthesis and Structure of Di(1,2,4,6-tetraphenylpyridinium) Octachlorodirhenate(III)

摘要

The (NC~(5)H~(2)(C~(6)H~(5))~(4))~(2)[Re~(2)Cl~(8)] · 2CH~(3)CN compound was prepared by the reaction of ( n -Bu~(4)N)~(2)[Re~(2)Cl~(8)] with the 1,2,4,6-tetraphenylpyridinium tosylate in the acetonitrile; it crystallizes upon cooling of the solution at –15°C. The structure consists of the ((C~(6)H~(5))~(4)C~(5)H~(2)N)_(+)cation and Re~(2)Cl ~(8)_(2?) anion with virtual D ~(4 h )symmetry. The average Re–Re and Re–Cl bond distances are 2.2205 and 2.3431 ?, respectively. In the structure, the Re~(2)Cl ~(8)_(2?) anions are disordered, such that 71.34% of the Re–Re units are aligned in one direction while 28.66% are aligned orthogonal to it. The principal crystallographic data are as follows: sp. gr. R ?3; a = 26.554(1) ?, c = 23.666(1) ?; V = 14451.6(1) ?_(3); Z = 9; D ~( x )= 1.643 g cm_(–3).