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Crystal and molecular structure of [Hg3(H2pdm)2(Hpdm) (μ-Cl)2Cl3]

✍ Scribed by Norberto Farfán; Herbert Höpfl

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 196 KB
Volume: 9
Category: Article
ISSN: 1042-7163
DOI: 10.1002/(sici)1098-1071(1998)9:4<377::aid-hc5>3.0.co;2-5

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✦ Synopsis

The reaction between mercury(II)chloride and 2,6-pyridinedimethanol provides a molecule with the empirical formula [Hg 3 (H 2 pdm) 2 -(Hpdm) (l-Cl) 2 Cl 3 ], whose crystal and molecular structure has been studied: a ‫ס‬ 10.640(1), b ‫ס‬ 10.818(2), c ‫ס‬ 13.159(2) A ˚, ␣ ‫ס‬ 88.480(5), b ‫ס‬ 75.067(4), c ‫ס‬ 89.736(5)Њ, V ‫ס‬ 1463.0(4) A ˚3, Z ‫ס‬ 2, P-1. The molecule consists of a central [Hg(Hpdm)Cl] fragment that is connected by chloro bridges to two lateral fragments of identical constitution, [Hg-(H 2 pdm)Cl 2 ]. The coordination geometry around the central mercury atom is distorted octahedral, while the lateral metal atoms are located in significantly different, distorted square-pyramidal polyhedrons. The tridentate ligand induces the formation of the squarepyramidal environment instead of the trigonal-bipyramidal one that is normally preferred by d 10 systems.

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