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No crystal structure has previously been reported for a lanthanide tricyclopentadienyl 1:1 adduct with the acetonitrile ligand. Single crystals of the samarium derivative have been obtained from a deuterated acetonitrile solution. The structure of these crystals is reported. The samarium displays pseudo-tetrahedral geometry via coordination to three cyclopentadienyl rings and one sigma-bonded acetonitrile ligand. The molecule as a whole exhibits imposed C(s) symmetry. The Sm-N bond nature and strength are similar for all Ln(C(5)H(5))(3)NC-R (R=alkyl) complexes.

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Authors: REBIZANT J, JRC Karlsruhe (DE);APOSTOLIDIS C, JRC Karlsruhe (DE);SPIRLET M R, University of Liège, Liège (BE);KANELLAKOPULOS B, Kernforschungszentrum Karlsruhe GmbH, Institut für Heisse Chemie, Karlsruhe (DE)
Bibliographic Reference: Article: Acta Crystallographica, C46 (1990) pp. 2076-2078
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