D.J. Harrison

Vibrational spectra of benzene derivatives—X: Monosubstituted nitrobenzenes

The infrared (3650–50 cm−1) and Raman spectra for the fifteen compounds, o-, m- or p-XC6H4NO2; X = CH3, F, Cl, Br, or I are presented and interpreted in detail, and the vibrations associated with the NO2 group are identified.

Vibrational spectra of benzene derivatives—XIV: Mono substituted phenols

Abstract Values of all the fundamental frequencies are proposed for the fifteen substituted phenols, o -, m - or p -X C 6 H 4 OH (X = CH 3 , F, Cl, Br or I), in the monomeric state utilizing i.r. (3650–50 cm −1 ) and Raman spectra. The in-plane and out-of-plane COH vibrations are identified for all the molecules; the former is also identified for o -methoxyphenol.

Vibrational spectra of benzene derivatives—XVI. Benzaldehyde and mono-substituted benzaldehydes

Abstract By the interpretation of new measurements of the i.r. (3650-80 cm −1 ) and Raman spectra, complete vibrational assignments are proposed for benzaldehyde and for the twelve derivatives o -, m -or p - X C 6 H 4 CHO; X = F, CH 3 , Cl or Br. Evidence is presented for the co-existence in the liquid state of two rotational isomers for all four m -substituted compounds and for three of the o -substituted compounds.

Vibrational spectra of ligands and complexes—V. Infrared spectra (380-40 cm−1) of triphenylphosphine complexes of zinc, cadmium and mercury

Abstract The infrared spectra (380-40 cm−1) of the triphenylphosphine (L) complexes L2MX2 and (LHgX2)2, M = Zn, Cd, or Hg; X = Cl, Br, or I, have been recorded. Assignments are proposed for the M—X stretching, XMX bending, and M—P stretching frequencies of the L2MX2 complexes, and the terminal Hg—X stretching frequencies of the (LHgX2)2 complexes. The M—P stretching frequencies are at ∼160 cm−1 (M = Zn); ∼135 cm−1 (M = Cd); and ∼130 and 105 cm−1 (M = Hg), but they could not be identified for the (LHgX2)2 complexes.

Vibrational spectra of benzene derivatives—XVII. Benzonitrile and substituted benzonitriles

Abstract The i.r. (3600-50 cm −1 ) and Raman spectra of benzonitrile in the vapour phase are reported and a vibrational assignment of the molecule is presented. Infrared and Raman spectra of o -, m - and p - X C 6 H 4 CN, X = CH 3 , F, Cl or Br are used to derive vibrational assignments for the molecules which are related to that for benzonitrile.

Vibrational spectra of benzene derivatives—XII 1,2,4-trisubstituted compounds

Abstract Measurements of the infrared (3650–50 cm −1 and Raman spectra of fourteen tri-substituted benzenes with the 1, 2, 4 pattern of substitution are reported, and complete interpretation of the spectra are proposed.

Vibrational spectra of benzene derivatives—XI 1,3,5- and 1,2,3-trisubstituted compounds

Abstract The infrared (3650–50 cm−1) and Ramon spectra of twelve trisubstituted benzenes are reported and interpreted. Complete vibrational assignments are proposed for (a) the 1,3,5-trisubstituted compounds: 1,3,5-trimethylbenzene, 1-fluoro-, 1-amino-, 1-chloro-, and 1-bromo-3,5-dimethylbenzene; (b)the 1,2,3-trisubstituted compounds: 1,2,3-trimethyl-1-fluoro-2,6-dimethyl-, 1-fluoro-2,3-dimethyl-, 1-chloro-2,6-dimethyl-, 1-chloro-3-fluoro-2-methyl-, 2,6-dichloro-1-methyl- and 2,6-dichloro-1-fluorobenzene.

Vibrational spectra of cyano-, formyl- and halogeno-pyridines

Abstract The i.r. and Raman spectra of 2-, 3-, and 4-cyano- and formylpyridine, and of 2-fluoropyridine are reported and interpreted. Details of these assignments and those for other halogeno-pyridines are discussed.

The vibrational spectra of the dimethylpyridines

Abstract The infrared (4000-50 cm −1 ) and Raman Spectra of the six dimethylpyridines (lutidines) have been measured, and assignments are proposed for all the fundamental frequencies.

Vibrational spectra of benzene derivatives—XXI. Benzoyl fluoride, acetophenone, methyl benzoate and related compounds

Abstract The i.r. and Raman spectra are presented and interpreted for the compounds C 6 H 5 COX, X = F, CH 3 , CD 3 or OCH 3 and the assignments are related to those for X = OH. Some details of assignment for X = OC 2 H 5 , I or NH 2 are also presented and discussed.