The bond-dissociation energies (BDEs) of more than twenty areneΟͺM + complexes (M = Cr, Fe, Co) have been studied by mass spectrometry, using the kinetic method. With minor exceptions, the same relative order of BDEs is found for the three metals and the series of substituted arenes: electrondonating
The calculation of bond dissociation energies of transition metal complexes using isostructural reactions
β Scribed by S. Dapprich; U. Pidun; A.W. Ehlers; G. Frenking
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 413 KB
- Volume
- 242
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
The metal-ligand bond dissociation energies (CO)nM-L are theoretically predicted at the HF, MP2 and CCSD(T) levels of theory using effective core potentials for the metals for M ---Cr, Mo, W, Ni, Pd, Pt and for L = CO, NO +, CN-, NC-, CS, SiO, N 2. The bond energies at the HF level are too low and the MP2 values are too high, while the CCSIXT) results are in good agreement with experimental data. The bond energies at MP2 show the same trend as the CCSIXT) values and may therefore be used for the prediction of relative bond dissociation energies. The absolute values for the bond energies calculated at MP2 are significantly improved when they are corrected using the energies of isostructural reactions M(CO) n + L ~ M(CO) n_ 1L + CO.
π SIMILAR VOLUMES
## m Bond function basis sets combined with the counterpoise procedure are used to calculate the molecular dissociation energies D,, of 24 diatomic molecules and ions. The calculated values of D,, are compared to those without bond functions and/or counterpoise corrections. The equilibrium bond le
ICR trapped ion techniques are used to examine the kinetics of proton transfer from MnH+ (formed as a fragment ion from HMn(CO)s by electron impact) to bases of varymg strength. Deprotonation is rapid with bases whose proton afflnity exceeds 196 f 3 kcal mol-\* \_ This value for PA (Mn) yields the h