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  • Molecular structure and charge distribution in organometallic compounds of 4f and 5f elements - II : Dielectric experiments on organometallic complexes of the 4f and higher elements with C(3v) and D(3h) molecular symmetry


The electric dipole moments of Pr(N(SiMe(3))(2))(3).OC(4)H(8) and Cp(3)Pr.NCC(2)H(5) with a quasi-C(3v) molecular symmetry and of Sc(N(SiMe(3))(2))(3), Cl(3)In.2N(C(2)H(5))(3), and Cp(3)La.2NCC(2)H(5) with D(3h) molecular symmetry were measured in benzene solutions. As expected, the compounds with D(3h) symmetry do not exhibit a dipole moment, while the compounds with C(3v) symmetry show a dipole moment higher than 4D. The experimental values are in excellent agreement with the values calculated from crystallographic data. The possibility of using charge distribution measurements to give accurate predictions of distances and angles in homologous compounds with unsolved cystal and molecular structure is discussed.

Additional information

Authors: MAIER R, Kernforschungszentrum Karlsruhe (DE);KANELLAKOPULOS B, Kernforschungszentrum Karlsruhe (DE);APOSTOLIDIS C, JRC Karlsruhe (DE)
Bibliographic Reference: Article: Journal of Organometallic Chemistry, Vol. 427 (1992) pp. 33-38
Record Number: 199210741 / Last updated on: 1994-12-02
Original language: de
Available languages: de