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Title:Millimeter-wave Studies Of The Isotopologues Of Iznch3(x1a1): Geometric Parameters And Evidence For Zinc Insertion
Author(s):Bucchino, Matthew
Contributor(s):Ziurys, Lucy; Sheridan, Phillip; Young, Justin
Subject(s):Structure determination
Abstract:The laboratory detection of gas-phase IZnCH$_{3}$ (X$^{1}$A$_{1}$), using millimeter-wave direct absorption methods, was reported previously. This work has been extended by the measurement of the pure rotational spectrum of several isotopolgues: I$^{64}$ZnCH$_{3}$, I$^{66}$ZnCH$_{3}$, I$^{64}$ZnCD$_{3}$, and I$^{64}$Zn$^{13}$CH$_{3}$. These species were all created by the reaction of zinc vapor with CH$_{3}$I, CD$_{3}$I, or $^{13}$CH$_{3}$I in the presence of a DC discharge. The zinc isotopolgues were observed in natural abundance. Rotational transitions in the range 256${-293}$ GHz (J = 109 ${\leftarrow}$ 108 to J = 132 ${\leftarrow}$ 131, for K = 0 to 6) have been recorded for each species. From these measurements, an r$_{0}$ structure has been determined. This structure was found to be in good agreement with previous DFT calculations. Interestingly, the $110.2^{\circ}$ Zn – C – H bond angle of IZnCH$_{3}$ is identical to that of the hydrogen substituted zinc insertion complex HZnCH$_{3}$ (X$^{1}$A$_{1}$). These data are further evidence that IZnCH$_{3}$ is not created by the generation of free radical fragments, but by the direct insertion of atomic zinc into the C – I bond of iodomethane.
Issue Date:2014-06-18
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:Bucchino, M.; Ziurys, L.; Sheridan, P.; Young, J. MILLIMETER-WAVE STUDIES OF THE ISOTOPOLOGUES OF IZnCH3(X1A1): GEOMETRIC PARAMETERS AND EVIDENCE FOR ZINC INSERTION. Proceedings of the International Symposium on Molecular Spectroscopy, Urbana, IL, June 16-21, 2014. DOI: 10.15278/isms.2014.WJ01
Rights Information:Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License.
Date Available in IDEALS:2014-09-17

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