Charge distribution in substituted cyclopentadienyl–manganese–tricarbonyl compounds

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Abstract
Photochemical synthesis of mono- and bi-substituted cyclopentadienyl–manganese–tricarbonyl compounds with triphenyl-phosphine, arsine, stibine, and bismuth is reported. The infrared absorption and proton magnetic resonance spectra are discussed in relation to the distribution of negative charges among the ligands. The dipole moments were measured and the partial dipole moments for the group manganese–triphenyl compound in these derivatives are calculated and discussed.It is shown that the distribution of negative charges occurs principally between the CO and phenyl ligands and that the donor–acceptor behavior of the phenyl ligands depends mainly on the phenyl group and to a very small extent on the central atom.

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