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Carbon Monoxide Bonding With BeO and BeCO 3 : Surprisingly High CO Stretching Frequency of OCBeCO 3
Author(s) -
Chen Mohua,
Zhang Qingnan,
Zhou Mingfei,
Andrada Diego M.,
Frenking Gernot
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201406264
Subject(s) - carbon monoxide , neon , chemistry , crystallography , polarization (electrochemistry) , argon , catalysis , organic chemistry , biochemistry
The complexes OCBeCO 3 and COBeCO 3 have been isolated in a low‐temperature neon matrix. The more stable isomer OCBeCO 3 has a very high CO stretching mode of 2263 cm −1 , which is blue‐shifted by 122 cm −1 with respect to free CO and 79 cm −1 higher than in OCBeO. Bonding analysis of the complexes shows that OCBeO has a stronger OCBeY bond than OCBeCO 3 because it encounters stronger π backdonation. The isomers COBeCO 3 and COBeO exhibit red‐shifted CO stretching modes with respect to free CO. The inverse change of CO stretching frequency in OCBeY and COBeY is explained with the reversed polarization of the σ and π bonds in CO.