Crystal structure of the 2:1 complex of mercury(II) chloride with trithiapyridino-12-crown-4 having unusual mercury coordination
1992; Elsevier BV; Volume: 194; Issue: 1 Linguagem: Inglês
10.1016/s0020-1693(00)85828-4
ISSN1873-3255
AutoresM. Elizabeth Sobhia, K. Panneerselvam, K. K. Chacko, Il‐Hwan Suh, Edwin Weber, Christiane Reutel,
Tópico(s)Molecular Sensors and Ion Detection
ResumoThe single crystal X-ray analysis of the 1:2 complex between trithiapyridino-12-crown-4 (1) and HgCl2 is reported. Crystals of the complex are monoclinic, P21/n, with a=13.455(5), b=15.627(2), c=8.933(2) Å, β=93.42(2)° and Dc=2.844 g cm−3 for Z=4. The host macrocycle has an approximate non-crystallographic mirror symmetry. The structure contains Hg in two very different environments. One Hg is fivefold coordinated in distorted square pyramidal geometry using the four heteroatoms of the macroring and an additional chloro atom as ligating sites. The other Hg remains uncoordinated by the macroring but is surrounded by three chloro atoms to form a trigonal-planar geometry. This complex is an example of unique coordination mode around Hg.
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