An infrared study of the structures of cyclopentadienyl compounds of copper(I) and mercury(II)

F. A. Cotton; Tobin J Marks

An infrared study of the structures of cyclopentadienyl compounds of copper(I) and mercury(II)

F. A. Cotton, Tobin J Marks

Northwestern University

Research output: Contribution to journal › Article › peer-review

104 Citations (Scopus)

Abstract

The infrared spectra of the copper(I) compounds (C₅H₅)CuPR₃, R = C₂H₅, C₄H₉, and the mercury compounds (C₅H₅)₂Hg and C₅H₅HgCl have been reinvestigated. Comparisons are made with the spectra of compounds which serve as models for pentahapto- and monohaptocyclopentadienylmetal systems. The following conclusions emerge unequivocally: (1) contrary to the belief which has prevailed since 1956, the copper compounds contain pentahapto (i.e., "sandwich-bonded" rings, and (2) the mercury compounds contain monohapto (i.e., σ-bonded) rings. The significance of these results is discussed in relation to the physical, chemical, and dynamical properties of the molecules.

Original language	English
Pages (from-to)	7281-7285
Number of pages	5
Journal	Journal of the American Chemical Society
Volume	91
Issue number	26
Publication status	Published - 1969

ASJC Scopus subject areas

Chemistry(all)

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title = "An infrared study of the structures of cyclopentadienyl compounds of copper(I) and mercury(II)",

abstract = "The infrared spectra of the copper(I) compounds (C5H5)CuPR3, R = C2H5, C4H9, and the mercury compounds (C5H5)2Hg and C5H5HgCl have been reinvestigated. Comparisons are made with the spectra of compounds which serve as models for pentahapto- and monohaptocyclopentadienylmetal systems. The following conclusions emerge unequivocally: (1) contrary to the belief which has prevailed since 1956, the copper compounds contain pentahapto (i.e., {"}sandwich-bonded{"} rings, and (2) the mercury compounds contain monohapto (i.e., σ-bonded) rings. The significance of these results is discussed in relation to the physical, chemical, and dynamical properties of the molecules.",

author = "Cotton, {F. A.} and Marks, {Tobin J}",

year = "1969",

language = "English",

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pages = "7281--7285",

journal = "Journal of the American Chemical Society",

issn = "0002-7863",

publisher = "American Chemical Society",

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TY - JOUR

T1 - An infrared study of the structures of cyclopentadienyl compounds of copper(I) and mercury(II)

AU - Cotton, F. A.

AU - Marks, Tobin J

PY - 1969

Y1 - 1969

N2 - The infrared spectra of the copper(I) compounds (C5H5)CuPR3, R = C2H5, C4H9, and the mercury compounds (C5H5)2Hg and C5H5HgCl have been reinvestigated. Comparisons are made with the spectra of compounds which serve as models for pentahapto- and monohaptocyclopentadienylmetal systems. The following conclusions emerge unequivocally: (1) contrary to the belief which has prevailed since 1956, the copper compounds contain pentahapto (i.e., "sandwich-bonded" rings, and (2) the mercury compounds contain monohapto (i.e., σ-bonded) rings. The significance of these results is discussed in relation to the physical, chemical, and dynamical properties of the molecules.

AB - The infrared spectra of the copper(I) compounds (C5H5)CuPR3, R = C2H5, C4H9, and the mercury compounds (C5H5)2Hg and C5H5HgCl have been reinvestigated. Comparisons are made with the spectra of compounds which serve as models for pentahapto- and monohaptocyclopentadienylmetal systems. The following conclusions emerge unequivocally: (1) contrary to the belief which has prevailed since 1956, the copper compounds contain pentahapto (i.e., "sandwich-bonded" rings, and (2) the mercury compounds contain monohapto (i.e., σ-bonded) rings. The significance of these results is discussed in relation to the physical, chemical, and dynamical properties of the molecules.

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