Effect of High Pressure on the Infrared Spectra of Solid Nitro- and Nitrito-Cobalt(iii) Ammine Complexes | Sciact - CRIS-system of Boreskov Institute of Catalysis

Effect of High Pressure on the Infrared Spectra of Solid Nitro- and Nitrito-Cobalt(iii) Ammine Complexes Full article

Journal

Berichte der Bunsengesellschaft/Physical Chemistry Chemical Physics
ISSN: 0940-483X , E-ISSN: 0005-9021

Output data

Year: 1992, Volume: 96, Number: 7, Pages: 931-937 Pages count : 7 DOI: 10.1002/bbpc.19920960714

Tags

COMPLEX COMPOUNDS; CRYSTAL STRUCTURE; HIGH PRESSURE; SPECTROSCOPY, INFRARED

Authors

Boldyreva E.V. ¹ , Burleva L.P. ¹ , Burgina E.B. ² , Baltachinov V.P. ² , Ahsbahs H. ³ , Uchtmann H. ⁴ , Dulepov V.E. ⁵

Affiliations

1	Institute of Solid State Chemistry, Siberian Branch of the Academy of Sciences USSR; Derzhavina 18, 630091, Novosibirsk 91, USSR
2	Institute of Catalysis, Siberian Branch of the Academy of Sciences USSR; prosp. Acad. Lavrent’eva 5, 630090 Novosibirsk 90, USSR
3	Philipps-Universitat Marburg, Fachbereich Geowissenschaften; Hans-Meerwein-StraDe, W-3550 Marburg/Lahn, Germany
4	Philipps-Universitat Marburg, Fachbereich Physikalische Chemie; Hans-Meerwein-StraBe, W-3550 Marburg/Lahn, Germany
5	Novosibirsk State University, Chemistry Department, Div. Solid State Chemistry; Pirogova 2, 630090 Novosibirsk 90, USSR

Funding (2)

1	German Research Foundation
2	Philipp University of Marburg

IR-absorption spectra of Co(III) ammine complexes [Co(NH3)5NO2]XY and [Co(NH3)5ONO]XY (XY = Cl2, Br2, I2, (NO3)2, Cl · NO3) were studied at static pressures up to 20 kbar in a diamond anvil cell. The measured pressure induced shifts of valence (symmetric and asymmetric) and deformational frequencies of the NO2-group were compared with a normal coordinate analysis of [Co(NH3)5NO2]2+ and [Co(NH3)5ONO]2+ models to determine the influence of kinematic factors on IR-vibrational frequencies. The experimentally observed frequency shifts induced by pressure were interpreted on the basis of theoretical simulation of the spectra. The blue shift of both δ(NO2) and νas(ONO) vibrational frequencies in the complexes with nitro (via nitrogen) coordination can be explained by a decrease in N-O bond lengths. The blue shift of νs(ONO) and the red shift of νas(ONO) frequencies in the solid complexes with nitrito (via oxygen) coordination can be explained by a decrease of the O-N-O bond angle with increasing pressure. For comparison, the pressure induced shifts of νs(ONO) and νas(ONO) for two Cr(III)-ammine complexes [Cr(NH3)5ONO]XY (XY = Cl2, (NO3)2) were also measured. Whereas the pressure dependence of νs is similar to the corresponding Co-compounds, νas is only slightly pressure dependent.

Boldyreva E.V. , Burleva L.P. , Burgina E.B. , Baltachinov V.P. , Ahsbahs H. , Uchtmann H. , Dulepov V.E.
Effect of High Pressure on the Infrared Spectra of Solid Nitro- and Nitrito-Cobalt(iii) Ammine Complexes
Berichte der Bunsengesellschaft/Physical Chemistry Chemical Physics. 1992. V.96. N7. P.931-937. DOI: 10.1002/bbpc.19920960714 WOS РИНЦ ANCAN OpenAlex

Submitted:	Feb 27, 1992
Accepted:	Apr 21, 1992
Published print:	Jul 1, 1992
Published online:	Mar 18, 2014

Web of science:	WOS:A1992JL12800013
Elibrary:	26577873
Chemical Abstracts:	1992:559786
Chemical Abstracts (print):	117:159786
OpenAlex:	W2038412894

DB	Citing
Web of science	25
Elibrary	23
OpenAlex	18