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Complex of N,N′,N′,N‴-tetrakis[2-diphenylphosphorylethyl]-1,4,7,10-tetraazacyclododecane with copper (II) perchlorate. Synthesis, structure, and conformational analysis

✍ Scribed by M. Yu. Antipin; A. P. Baranov; M. I. Kabachnik; S. A. Pisareva; Yu. M. Polikarpov; E. I. Sinyavskaya; Yu. T. Struchkov; L. B. Tsimbal

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
355 KB
Volume
7
Category
Article
ISSN
1042-7163

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✦ Synopsis

1,4,7,1O-Tetraazacyclododecane having P-ethylphosphoryl pendant groups on the nitrogen atoms can form a complementary ligand for the Cu cation. It gives rise to a square pyramidal complex of [CuLI2+ compositions, the ligand entering this complex with a slight energy strain. 0 1996 John Wiley & Sons, Inc.

Earlier we reported [1,2] a synthesis of organophosphorus cyclopendant ligands based on the cyclene with ethylphosphoryl pendant groups.

The complex-forming ability for the compound with PO,H, groups has been characterized by the stability constants for complexes with several metal cations [ l ] and by the molecular mechanics calculations using the "floating point" technique .

In the present article, we report the X-ray structure analysis of the (Cu[O = P(Ph,)CH,CH,-N-*To whom correspondence should be sent. CH2CH2-l,)2+ (C104-)2 * 6H20 complex and the result of a molecular mechanics calculation of a ligand contour strain energy.

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