Abstract
The sequential bond energies of Ti(CO)+ x, x = 1–7, are determined by collision induced dissociation with xenon in a guided ion beam tandem mass spectrometer. Values (in eV) for the (CO)x-1 Ti+—CO bond energies at 0 K are found to be 1⋅22 ± 0⋅006, 1⋅17 ± 0⋅04, 1⋅04 ± 0⋅04, 0⋅90 ± 0⋅05, 0.72 ± 0⋅04, 0⋅77 ± 0⋅03 and 0⋅54 ± 0⋅07 for x = 1–7, respectively. Although the bond energy of the Ti(CO)+ 7 17-electron complex is weak, it is stronger than would be expected for a ligand in the second ligand shell. The trends in the sequential bondenergies are discussed in terms of spin conservation and ligand field theory and are compared with the corresponding variations in the V(CO)+ x and Cr(CO)+ x systems.
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