Matrix-Isolation Infrared Spectroscopy of Hydrogen-Bonded Complexes of Triethyl Phosphate with H₂O, D₂O, and Methanol

Authors: George, Lisa¹; Sankaran, K.²; Viswanathan, K.S.²; Mathews, C.K.²

Source: Applied Spectroscopy, Volume 48, Issue 7, Pages 14A-21A and 775-903 (July 1994) , pp. 801-807(7)

Publisher: Society for Applied Spectroscopy

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Abstract:

The infrared spectra of adducts of triethyl phosphate (TEP) with H₂O, D₂O, and methanol (MeOH), isolated in a nitrogen matrix, are reported. A red shift in the phosphoryl (P=O) stretching vibration of triethyl phosphate was seen, which indicated adduct formation. Adducts of the type 1:1 and 1:2 of TEP...H₂O and TEP...MeOH were identified in the matrix. It was observed that adduct formation occurred only with the phosphoryl oxygen and not with the alkoxy oxygen of triethyl phosphate. A red shift in the OH stretching vibration of water, as well as that of methanol, was also observed because of adduct formation. Solution spectra of TEP were also recorded in the same solvents and compared with the matrix spectra.

Keywords: Matrix-isolation; Infrared; Fr-IR; Organic phosphate; Triethyl phosphate; Water; Methanol; Adducts; Hydrogen-bonding

Document Type: Research article

DOI: http://dx.doi.org/10.1366/0003702944029983

Affiliations: 1: Chemical Group, IGCAR, Kalpakkam 603 102, India; present address: RSIC, Indian Institute of Technology, Madras 600 036, India 2: Chemical Group, IGCAR, Kalpakkam 603 102, India

Publication date: 1994-07-01

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