L. Huang et al., REACTION OF MERCURY(II) DIBROMIDE WITH TRIS(N-BUTYL)PHOSPHINE TELLURIDE - FORMATION OF AN UNUSUAL (HGTE)(3) RING-SYSTEM, Heteroatom chemistry, 7(1), 1996, pp. 57-65
Tris(M-butyl)phosphine telluride (R3PTe) yields, with HgBr2 from aceto
ne solution, a very thermally and air sensitive crystalline solid. Thi
s solid has been identified as (HgBr2)(4) .(TePR3)(3). X-ray diffracti
on analysis reveals that this compound contains a dimeric cation, [(Hg
TePR3)(3)Br-5](2)(2+), in which each unit is characterized by a six-me
mbered ring made of alternating bonds between mercury and tellurium. T
he counter ion is a dinuclear anion [Hg2Br6](2-). The crystal belongs
to the triclinic system, <P(1)over bar> group with a = 12.206(9) A, b
= 17.613(10) A, c = 18.065(9) A, and Z = 2. The preparation of this Me
w heterocyclic system and its decomposition under different conditions
into Hg3Te2Br2 or HgTe are presented. (C) 1996 John Wiley & Sons, Inc
.