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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/3432
Title: Unusual Tridentate N3 Capping Coordination Behavior of Hexakis(3,5-dimethylpyrazolyl)cyclotriphosphazene, N3P3(3,5-Me2Pz)6: Synthesis, Spectroscopy, and Electrochemistry of Mono- and Dinuclear Copper(II) Complexes and the X-ray Structure of N3P3(3,5-Me2Pz)6·CuCl2
Authors: Justin Thomas, K. R.
Chandrasekhar V.
Pal P.
Scott S.R.
Hallford R.
Cordes A.W.
Published in: Inorganic Chemistry
Abstract: The reactions of hexakis(3,5-dimethylpyrazolyl)cyclotriphosphazene, N3P3(3,5-Me2Pz)6(HPCTP) (3), with copper-(II) halides afford mononuclear HPCTP·CuX2 (X = Cl, 3a; X = Br, 3b) and dinuclear HPCTP·2CuX2 (X = Cl, 3c; X = Br, 3d) coordination complexes. Optical absorption spectra and ESR spectra of these complexes suggest a distorted trigonal bipyramidal geometry around copper in all of the compounds 3a–3d. The structure of HPCTP·CuCl2 (3a) was determined by X-ray crystallography. The crystals of 3a are monoclinic, space group P21/n, with a = 21.338 (4) Ã…, b = 11.43 (3) Ã…, c = 18.285 (3) Ã…, β = 104.37 (2)o, V = 4321(2) Ã…3 and Z = 4. The structure shows that the cyclophosphazene ligand functions as an unprecedented N3 capping ligand: coordination to copper is through two nongeminal pyrazolyl pyridinic nitrogen atoms and one cyclophosphazene ring nitrogen atom, and the geometry around copper is distorted trigonal bipyramidal. Cyclic voltammetric studies have been carried out on complexes 3a–3d. © 1993, American Chemical Society. All rights reserved.
Citation: Inorganic Chemistry (1993), 32(5): 606-611
URI: https://doi.org/10.1021/ic00057a020
http://repository.iitr.ac.in/handle/123456789/3432
Issue Date: 1993
ISSN: 201669
Author Scopus IDs: 57203389297
7006003609
15075043800
15075424800
15074744900
7006516385
Author Affiliations: Thomas, K.R.J., Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
Chandrasekhar, V., Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
Pal, P., Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
Scott, S.R., Department of Chemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
Hallford, R., Department of Chemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
Cordes, A.W., Department of Chemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
Corresponding Author: Chandrasekhar, V.; Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
Appears in Collections:Journal Publications [CY]

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