Millimeter-wave Studies Of The Isotopologues Of Iznch3(x1a1): Geometric Parameters And Evidence For Zinc Insertion

Bucchino, Matthew

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https://hdl.handle.net/2142/50999 Copy

Description

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

Issue Date

2014-06-18

Keyword(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.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

English

Permalink

http://hdl.handle.net/2142/50999

DOI

https://doi.org/10.15278/isms.2014.WJ01

Copyright and License Information

Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/

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