Hydrogen sulphide – halogen complexes studied by matrix isolation vibrational spectroscopy

1985 ◽  
Vol 63 (7) ◽  
pp. 1705-1707 ◽  
Author(s):  
U. P. Agarwal ◽  
A. J. Barnes ◽  
W. J. Orville-Thomas
Keyword(s):  
Low Temperature ◽  
Vibrational Spectroscopy ◽  
Infrared Spectra ◽  
Hydrogen Sulphide ◽  
Matrix Isolation ◽  
Reaction Products ◽  
Hydrogen Halides ◽  
Stretching Vibration

Infrared spectra are reported of mixtures of hydrogen sulphide with chlorine or bromine in low-temperature argon or nitrogen matrices. The H2S … Cl2 and H2S … Br2 complexes were identified from the perturbed halogen stretching vibration. Absorptions due to the corresponding hydrogen halides provided evidence that reaction was occurring between the hydrogen sulphide and halogen (despite the use of a twin-jet deposition), and other reaction products were tentatively identified from the observed absorptions.

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.

scholarly journals Copper(II) derivatives of the stereochemically adaptive ligands 1,2-bis(2′-pyridyl)ethane and bis(2-pyridyl)disulfide

1970 ◽  
Vol 48 (20) ◽  
pp. 3185-3192 ◽  
Author(s):  
M. Keeton ◽  
A. B. P. Lever ◽  
B. S. Ramaswamy
Keyword(s):  
Low Temperature ◽  
Vibrational Spectroscopy ◽  
Infrared Spectra ◽  
Metal Ion ◽  
Structural Types ◽  
Distorted Octahedral ◽  
Derivatives Of

Tetrahedral, square, square pyramidal, and tetragonally distorted octahedral complexes of copper(II) with the title ligands are characterized by electronic and vibrational spectroscopy (at ambient and low temperature) and magnetism. The infrared spectra are utilized to infer information about the conformation of the ligands in these complexes. The variation in structural types observed is believed to be a consequence of the stereochemical adaptability of these ligands to the electronic demands of the metal ion.

ChemInform Abstract: Low-Temperature Matrix Isolation Studies of BCl(N3)2: Infrared Spectra and Photolysis Processes.

ChemInform ◽  
2010 ◽  
Vol 31 (8) ◽  
pp. no-no
Author(s):  
Michael J. Travers ◽  
Erika L. Eldenburg ◽  
Julanna V. Gilbert
Keyword(s):  
Low Temperature ◽  
Infrared Spectra ◽  
Matrix Isolation ◽  
Temperature Matrix

Low-Temperature Matrix Isolation Studies of BCl(N3)2:  Infrared Spectra and Photolysis Processes

1999 ◽  
Vol 103 (48) ◽  
pp. 9661-9668 ◽  
Author(s):  
Michael J. Travers ◽  
Erika L. Eldenburg ◽  
Julanna V. Gilbert
Keyword(s):  
Low Temperature ◽  
Infrared Spectra ◽  
Matrix Isolation ◽  
Temperature Matrix

Thio derivatives of β-diketones and their metal chelates. I. Some Monothio-β-diketones and their nickel(II) chelates

1965 ◽  
Vol 18 (5) ◽  
pp. 673 ◽  
Author(s):  
SHH Chaston ◽  
SE Livingstone ◽  
TN Lockyer ◽  
VA Pickles ◽  
JS Shannon
Keyword(s):  
Low Temperature ◽  
Metal Complexes ◽  
Infrared Spectra ◽  
Hydrogen Sulphide ◽  
Mass Spectrometric ◽  
Dilute Solution ◽  
Nickel Chelates ◽  
Derivatives Of ◽  
Diethyl Dithiophosphate ◽  
Yellow Compound

Monothio-β-diketones of general formula RC(SH)=CHCOR? (R = Me, R* = Me, Ph, OEt; R = Ph, R' = Ph, OEt; R = α-thienyl, R' = CF3; and 12 = R' = CMe,) have been prepared in order to study their metal complexes. Five of these thio derivatives are new and were prepared by treatment of a dilute solution of the corresponding β-diketone in alcohol with hydrogen sulphide at low temperature. Mass spectrometric examination has established the structures of MeC(SH)=CHCOPh and RC(SH)=CHCOCF, (R = α-thienyl). The red compounds PhC(SH)=CHCOPh (VI) and MeC(SH)=CHCOPh (V) can be oxidized to yellow products. The structure of the yellow compound (XV) obtained from (VI) was established by mass and n.m.r. spectroscopy as the disulphide PhCOCH=C(Ph)SSC(Ph)=CHCOPh. The molecular ion of (XV) undergoes novel rearrangement reactions involving, inter alia, elimination of H2S to produce a thiophene ion. The nickel chelates Ni(RCS=CHCOR')2 are brown, diamagnetic, and soluble in organic solvents. Unstable paramagnetic bis-pyridine adducts, derived from two of the nickel chelates, were isolated. The infrared spectra of the monothio-β-diketones and their nickel chelates are reported. The spectra of the monothio-β-diketones show no SH band at c. 2570 cm-1 ; this indicates strong chelation of the thiol hydrogen between the sulphur and oxygen atoms. The monothio-β-diketones display four characteristic bands which are assigned as follows : 1670-1590 cm-1, v(C--O) ; 1638-1530 cm-1, v(C=C) ; 1267-1190 cm-1, v(C=S) ; 837-805 cm-1, provisionally assigned as v(C=S) + δ(C-H). The nickel chelates exhibit five characteristic bands: 1590-1535 cm-1, V(C=C); 1542-1477 cm-1, v(C-0); 1261-1220 cm-1, v(C--S); 817-800 cm-1, provisionally assigned to v(C-S)+ δ(C-H); 499-451 cm-1, v(Ni-O). No band corresponding to v(Ni-S) was detected above 250 cm-1. However, the metal-sulphur stretching frequency was observed as a peak of medium intensity within the range 360-308 cm-1 in the spectra of bis(o-methylthiobenzenethiolo)-nickel(II) and the diethyl dithiophosphate complexes of nicke1(II), palladium(II), chromium(III), and cobalt(III).

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

1994 ◽  
Vol 48 (7) ◽  
pp. 801-807 ◽  
Author(s):  
Lisa George ◽  
K. Sankaran ◽  
K. S. Viswanathan ◽  
C. K. Mathews
Keyword(s):  
Infrared Spectroscopy ◽  
Infrared Spectra ◽  
Matrix Isolation ◽  
Adduct Formation ◽  
Red Shift ◽  
Triethyl Phosphate ◽  
The Matrix ◽  
Stretching Vibration ◽  
Phosphoryl Oxygen

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.

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