Hydrogen Bonding of Radicals: Interaction of Dimethyl Ether with OOH, HOOH and OOH-

Document Type

Article

Journal/Book Title

Chemical Physics Letters

Publication Date

9-29-2006

Publisher

Elsevier

Volume

429

Issue

1-3

First Page

38

Last Page

42

Abstract

Ab initio calculations analyze the interaction between dimethyl ether and hydroperoxy radical, and closed-shell analogues HOOH and OOH. The two minima on each surface contain more than one H-bond. The more strongly bound structure contains a OH⋯O bond, along with blue-shifting CH⋯O; the other minimum contains exclusively CH⋯O. The strongest complex occurs with the anionic OOH, followed by OOH and then HOOH. Alterations of the covalent bond lengths, vibrational frequency shifts and electronic charge shifts are associated with strengths of individual H-bonds. The data help explain how the H-bonds are affected by the open-shell character of the OOH radical.

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