Matrix reactions of alkali metal chloride salts and HCl and DCl: Infrared spectra of the M$sup +$HCl$sub 2$$sup -$ and M$sup +$DCl$sub 2$$sup -$ ion pairs

Journal Article · Mon Sep 15 00:00:00 EDT 1975 · J. Chem. Phys., v. 63, no. 6, pp. 2466-2472

OSTI ID:4166560

Ault, B S; Andrews, L

The matrix reactions of alkali metal chloride salts and HCl and DCl have been investigated in argon matrices, as well as the reaction of lithium metal with HCl and DCl. From each reaction product a single intense band was observed which has been assigned to the antisymmetric stretch $nu$$sub 3$ of the HCl$sub 2$$sup -$ and DCl$sub 2$$sup -$ anions in the M$sup +$HCl$sub 2$$sup -$ and M$sup +$DCl$sub 2$$sup -$ ion pairs. Comparisons to literature spectra, in conjunction with quartic deuterium shifts, indicate that the anion has a linear, centrosymmetric geometry in the isolated ion pair. A rough estimate for the bond strength of the hydrogen bond in this anion is 18plus-or-minus2 kcal/mole. Further, comparison to the spectra of earlier workers indicates that bands previously asigned to the HCl$sub 2$ radical are best reassigned to the isolated HCl$sub 2$$sup -$ anion.

• Research Organization: Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901
• NSA Number: NSA-33-002623
• OSTI ID: 4166560
• Journal Information: J. Chem. Phys., v. 63, no. 6, pp. 2466-2472, Journal Name: J. Chem. Phys., v. 63, no. 6, pp. 2466-2472; ISSN JCPSA
• Country of Publication: United States
• Language: English

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