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Enthalpies of ligand substitution for [Mo(η5C5H5)(CO)2(NO)] – The role of π-bonding effects in metal–ligand bond strengths
- Source :
- The Journal of Chemical Thermodynamics. 73:156-162
- Publication Year :
- 2014
- Publisher :
- Elsevier BV, 2014.
-
Abstract
- Enthalpies of ligand substitution for [Mo(η 5 -C 5 H 5 )(CO) 2 (NO)] producing [Mo(η 5 -C 5 H 5 )Mo(CO)(L)(NO)] have been measured by solution calorimetry at 30 °C in THF for L = P(OMe) 3 2 2 Ph 3 (SIPr = 1,3-bis(2,6-bis(diisopropylphenyl)imidazolinylidene; IPr = 1,3-bis(2,6-bis(diisopropylphenyl)-imidazol-2-ylidene)). The accepting metal fragment [Mo(η 5 -C 5 H 5 )(CO)(NO)] has a vacant site containing strongly π-accepting carbonyl and nitrosyl ligands and this is shown to influence the stability of the product complex. Infrared studies of both ν CO and ν NO show that metal-to-ligand backbonding increases in the order P(OMe) 3 3 5 -C 5 H 5 )(CO)(IPr)(NO)] and [Mo(η 5 -C 5 H 5 )(CO)(SIPr)(NO)] are reported.
- Subjects :
- Ligand
Inorganic chemistry
chemistry.chemical_element
Calorimetry
Medicinal chemistry
Atomic and Molecular Physics, and Optics
Catalysis
Metal
chemistry.chemical_compound
chemistry
Molybdenum
visual_art
Thermochemistry
visual_art.visual_art_medium
General Materials Science
Physical and Theoretical Chemistry
Organometallic chemistry
Pi backbonding
Subjects
Details
- ISSN :
- 00219614
- Volume :
- 73
- Database :
- OpenAIRE
- Journal :
- The Journal of Chemical Thermodynamics
- Accession number :
- edsair.doi...........9855ab76a57b8e250cb3a117d49800c2