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31P-NMR and X-Ray Studies of the Complexes [HgX2 (1)]. (1=2, 11-bis (diphenylphosphinomethyl)benzo [c]phenanthrene, X=Cl, I)

โœ Scribed by Roland W. Kunz; Paul S. Pregosin; Mercedes Camalli; Francesco Caruso; Luigi Zambonelli

Book ID
102858786
Publisher
John Wiley and Sons
Year
1983
Tongue
German
Weight
553 KB
Volume
66
Category
Article
ISSN
0018-019X

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โœฆ Synopsis

The 31PI 'HI-NMR characteristics of the complexes [HgX2(1)] and [HgX2-(PPh2Bz)2] (X=N03, C1, Br, I, SCN, CN) and the solid state structures of the complexes [HgC12(1)] and [HgI2(1)] (1 = 2,ll-bis (diphenylphosphinomethy1)benzo-[clphenanthrene) have been determined.

The ' J ( 199Hg, 31P) values increase in the order CN < I < SCN < Br < C1< NO3. The two molecular structures show a distorted tetrahedral geometry about mercury. Pertinent bond lengths and bond angles from the X-ray analysis are as follows:

Hg-P=2.485(7) A and 2.509(8) A, Hg-C1=2.525(8) A and 2.505(10) A, P-Hg-P = 125.6 (3)", Cl-Hg-Cl= 97.0(3)' for [HgC12(1)] and Hg-P= 2.491 (10) A and 2.500 (1 1) A, Hg-I = 2.858 ( 5 ) A and 2.832 (3) A, P-Hg-P = 146.0(4)", I-Hg-I = 116.9(1)' for [Hg12(1)]. The equation, derived previously, relating 1J('99Hg, 31P) and the angles P-Hg-P and X-Hg-X is shown to be valid for 1.

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