Research output: Contribution to journal › Article › peer-review
Linkage isomerism of carbonyl coordination complexes formed upon CO adsorption on the zeolite Li-ZSM-5 : Variable-temperature FTIR studies. / Otero Areán, C.; Rodríguez Delgado, M.; Manoilova, O. V.; Turnes Palomino, G.; Tsyganenko, A. A.; Garrone, E.
In: Chemical Physics Letters, Vol. 362, No. 1-2, 13.08.2002, p. 109-113.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Linkage isomerism of carbonyl coordination complexes formed upon CO adsorption on the zeolite Li-ZSM-5
T2 - Variable-temperature FTIR studies
AU - Otero Areán, C.
AU - Rodríguez Delgado, M.
AU - Manoilova, O. V.
AU - Turnes Palomino, G.
AU - Tsyganenko, A. A.
AU - Garrone, E.
PY - 2002/8/13
Y1 - 2002/8/13
N2 - Carbon monoxide adsorbed at a low-temperature on the zeolite Li-ZSM-5 forms Li+ ⋯ CO and Li+ ⋯ (CO)2 species characterized by C-O stretching bands at 2195 and 2187 cm-1, respectively. These C-bonded carbonyls are in a temperature-dependent equilibrium with Li+ ⋯ OC and CO ⋯ Li+ ⋯ CO species having O-bonded CO. By means of variable-temperature FTIR spectroscopy, the enthalpy change involved in the corresponding isomerization process was found to be ΔH° = 7.8 kJ mol-1 for the monocarbonyl and ΔH° = 5.1 kJ mol-1 for the dicarbonyl. Therefore, although C-bonded species were always found to show a higher cation-CO interaction energy than O-bonded species, the difference is smaller in the case of dicarbonyls.
AB - Carbon monoxide adsorbed at a low-temperature on the zeolite Li-ZSM-5 forms Li+ ⋯ CO and Li+ ⋯ (CO)2 species characterized by C-O stretching bands at 2195 and 2187 cm-1, respectively. These C-bonded carbonyls are in a temperature-dependent equilibrium with Li+ ⋯ OC and CO ⋯ Li+ ⋯ CO species having O-bonded CO. By means of variable-temperature FTIR spectroscopy, the enthalpy change involved in the corresponding isomerization process was found to be ΔH° = 7.8 kJ mol-1 for the monocarbonyl and ΔH° = 5.1 kJ mol-1 for the dicarbonyl. Therefore, although C-bonded species were always found to show a higher cation-CO interaction energy than O-bonded species, the difference is smaller in the case of dicarbonyls.
UR - http://www.scopus.com/inward/record.url?scp=0037072218&partnerID=8YFLogxK
U2 - 10.1016/S0009-2614(02)00985-5
DO - 10.1016/S0009-2614(02)00985-5
M3 - Article
AN - SCOPUS:0037072218
VL - 362
SP - 109
EP - 113
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 1-2
ER -
ID: 41680654