Hydrogen-Bonding and Photochemistry of Organometallics in Liquid Xenon Solution in the Presence of Proton Donors: A Low Temperature Infrared Study of the Interaction of (CF3)3COH with (C5Me5)M(CO)2L (M = Mn and Re; L = CO, N2, and H2) and with (C5Me5)V(CO)4

1994 ◽  
Vol 13 (5) ◽  
pp. 1767-1774 ◽  
Author(s):  
Paul A. Hamley ◽  
Sergei G. Kazarian ◽  
Martyn Poliakoff
Keyword(s):  
Hydrogen Bonding ◽  
Low Temperature ◽  
Liquid Xenon ◽  
Infrared Study ◽  
Proton Donors

A Low Temperature Infrared Study of Self-association in Thiols

1972 ◽  
Vol 50 (22) ◽  
pp. 3594-3600 ◽  
Author(s):  
R. Bicca de Alencastro ◽  
C. Sandorfy
Keyword(s):  
Hydrogen Bonding ◽  
Low Temperature ◽  
Infrared Spectra ◽  
Low Temperatures ◽  
Infrared Study ◽  
Text Type ◽  
Stretching Vibration ◽  
Aliphatic Thiols ◽  
Self Association ◽  
Associated Species

The infrared spectra of several aliphatic thiols and of benzenethiol were measured between 2400 and 2700 cm−1, and 4800 and 5300 cm−1 in a 1:1 mixture of CCl3F and C2F4Br2, at temperatures ranging from 20 to −190 °C. Dimerization takes place at low temperatures and more highly associated species also appear. Free S—H groups are present in the solutions as well as in the pure liquids, even at the lowest temperatures. The association is of the [Formula: see text] type in aliphatic thiols; both [Formula: see text] and [Formula: see text] bonds are found in the case of benzenethiol and α-toluenethiol. Hydrogen bonding has little effect on the anharmonicity of the S—H stretching vibration.

Low Temperature Infrared Study of Hydrogen Bonding in Dissolved Pyrrole and Indole

1973 ◽  
Vol 51 (7) ◽  
pp. 1075-1082 ◽  
Author(s):  
Marie-Claude Bernard-Houplain ◽  
C. Sandorfy
Keyword(s):  
Hydrogen Bonding ◽  
Low Temperature ◽  
Spectroscopic Methods ◽  
Infrared Study ◽  
Stretching Vibration ◽  
Self Association ◽  
Associated Species

Self-association by hydrogen bonding in the case ot pyrrole was studied by i.r. spectroscopic methods. The fundamental first and second overtones of the NH stretching vibration were measured at different concentrations and at temperatures ranging from 22 to −190 °C. The existence of at least two associated species in solution has been ascertained. 2,5-Dimethylpyrrole and indole were also studied and gave similar results.

Infrared Study of the Interactions between Poly(Vinyl Pyridines) and Poly(Mono-n-Alkyl Itaconates)

1996 ◽  
Vol 50 (7) ◽  
pp. 893-899 ◽  
Author(s):  
José L. Velada ◽  
Luis C. Cesteros ◽  
I. Katime
Keyword(s):  
Hydrogen Bonding ◽  
Quantitative Study ◽  
Proton Acceptor ◽  
Specific Interactions ◽  
Polymer Complexes ◽  
Infrared Study ◽  
Characteristic Modes ◽  
Proton Donors ◽  
Vinyl Pyridine ◽  
Curve Fitting Analysis

In this paper we have performed a spectroscopic study of the polymer–polymer complexes and polymer blends formed by mixing poly-acids [a series of poly(mono- n-alkyl itaconates)], and polybases [poly(2-vinyl pyridine) and poly(4-vinyl pyridine)]. The poly(mono- n-alkyl itaconates) are proton donors and the poly(vinyl pyridines) are good proton-acceptor polymers. Therefore, these pairs of polymers can interact via hydrogen bonding under given conditions. The obtained spectroscopic results point out the existence of hydrogen bonding in the studied systems. In addition to the qualitative hydrogen-bonding evidence observed in the hydroxyl and carbonyl stretching region, the curve-fitting analysis of the characteristic modes of the pyridine groups allows a quantitative study of the specific interactions to be performed.

Low Temperature Infrared Study of Hydrogen Bonding in Acetone Oxime-d6

1973 ◽  
Vol 51 (9) ◽  
pp. 1441-1442 ◽  
Author(s):  
Thérèse Di Paolo ◽  
Camille Sandorfy
Keyword(s):  
Hydrogen Bonding ◽  
Low Temperature ◽  
Infrared Spectrum ◽  
Liquid Nitrogen ◽  
Liquid Nitrogen Temperature ◽  
Infrared Study ◽  
Acetone Oxime

The infrared spectrum of (CD3)2C=N—OH was measured in solution down to liquid nitrogen temperature. As the temperature is lowered several new "associated bands" appear indicating the presence of species more highly associated than cyclic dimers or trimers.

A Low Temperature Infrared Study of Hydrogen Bonding in N-Alkylacetamides

1973 ◽  
Vol 51 (21) ◽  
pp. 3640-3646 ◽  
Author(s):  
Marie-Claude Bernard-Houplain ◽  
C. Sandorfy
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Low Temperature ◽  
Infrared Spectra ◽  
Bond Formation ◽  
Coupling Constant ◽  
Infrared Study ◽  
Hydrogen Bond Formation ◽  
Stretching Vibration ◽  
Secondary Amides

The infrared spectra of N-methylacetamide and two other secondary amides were measured in solution at temperatures ranging from 22 to −190 °C in both the fundamental and the overtone regions. At least two hydrogen bonded species are found as association increases with decreasing temperature. The effect of hydrogen bond formation on the anharmonicity of the NH stretching vibration and on the NH stretching – NH bending coupling constant is examined.

Mixed carbonyl-dinitrogen compounds: synthesis and thermal stability of Cr(CO)6-x(N2)x in liquid xenon solution and low-temperature matrixes

1983 ◽  
Vol 22 (6) ◽  
pp. 911-920 ◽  
Author(s):  
James J. Turner ◽  
Michael B. Simpson ◽  
Martyn Poliakoff ◽  
William B. Maier ◽  
Michael A. Graham
Keyword(s):  
Thermal Stability ◽  
Low Temperature ◽  
Liquid Xenon ◽  
Thermal Stability Of
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