Femtosecond dynamics of hydrogen-bonding solvents. Formamide and [ital N]-methylformamide in acetonitrile, DMF, and water

Journal Article · Thu Jul 01 04:00:00 EDT 1993 · Journal of Chemical Physics; (United States)

DOI:https://doi.org/10.1063/1.465790· OSTI ID:6487131

Chang, Y J; Castner, Jr, E W ^[1]

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1. Chemistry Department, Brookhaven National Laboratory, Building 555A, Upton, New York 11973 (United States)

We have used optical-heterodyne-detected optical Kerr effect (OHD-OKE) spectroscopy to measure the ultrafast dynamical profile of the amide series formamide (FA), [ital N]-methylformamide (NMF), and [ital N],[ital N]-dimethylformamide (DMF). We have studied the concentration dependence of binary solutions of FA and NMF using DMF, water, and acetonitrile as cosolvents. Our results show an underdamped librational motion with a period of about 100 cm[sup [minus]1] in both FA and NMF, which also occurs in the binary solutions. The significance of these results for ultrafast chemical reactions in solution is discussed.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6487131
• Journal Information: Journal of Chemical Physics; (United States), Journal Name: Journal of Chemical Physics; (United States) Vol. 99:1; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ACETONITRILE
AMIDES
AQUEOUS SOLUTIONS
BINARY MIXTURES
CHEMICAL BONDS
CHEMICAL REACTIONS
CONCENTRATION RATIO
DETECTION
DIELECTRIC PROPERTIES
DISPERSIONS
ELECTRICAL PROPERTIES
ELEMENTS
FORMAMIDE
HYDROGEN
KERR EFFECT
MIXTURES
NITRILES
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
SOLUTIONS
SOLVENTS