Open AccessDi‐μ‐halogeno‐bis[halogeno(triphenylphosphine)mercury(II)], [Ph 3 PHg X (μ‐ X ) 2 X HgPPh 3 ], reinvestigated at 120 K for X = Cl and Br, and a second polymorph for X = I, also at 120 K
Author(s) -
Mariyatra M. Baby,
Panchanatheswaran Krishnaswamy,
Low John N.,
Glidewell Christopher
Publication year - 2005
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
eISSN - 1600-5759
pISSN - 0108-2701
DOI - 10.1107/s0108270105006323
Subject(s) - triphenylphosphine , chemistry , molecule , hydrogen bond , stereochemistry , mercury (programming language) , crystal structure , crystallography , medicinal chemistry , organic chemistry , catalysis , computer science , programming language
Di‐μ‐chloro‐bis[chloro(triphenylphosphine)mercury(II)], [Hg 2 Cl 4 (C 18 H 15 P) 2 ], (I), and di‐μ‐bromo‐bis[bromo(triphenylphosphine)mercury(II)], [Hg 2 Br 4 (C 18 H 15 P) 2 ], (II), have been reinvestigated at 120 K. The molecules of (I) lie across inversion centres in space group P 2 1 / n , and in both (I) and (II) the complexes are linked into three‐dimensional frameworks by a combination of C—H· X ( X = Cl and Br) and C—H·π(arene) hydrogen bonds. At 120 K, di‐μ‐iodo‐bis[iodo(triphenylphosphine)mercury(II)], [Hg 2 I 4 (C 18 H 15 P) 2 ], (III), crystallizes as a new polymorphic form having Z ′ = , where the complexes lie across inversion centres in space group P 2 1 / n ; the complexes are linked into sheets by a combination of C—H·I and C—H·π(arene) hydrogen bonds. In the Z ′ = 1 polymorph of this compound, a single C—H·I hydrogen bond generates simple chains.