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A heptacoordinated Cd(II) complex bis(1,10-phenanthroline)bis(trifluoroacetato)cadmium(II) has been synthesised; its structure is distorted pentagonal bipyramidal. 113 Cd NMR spectroscopy has been done to correlate the structure. The compound is characterised by a single resonance at 111 ppm deshielded from 0.1 M Cd(ClO 4 ) 2 . 6H 2 O.
Reacting 2-butyne with the cobalt stannylene complexes [Cp R (C 2 H 4 )Co-Sn{CH{Si(CH 3 ) 3 } 2 } 2 ] (R = H (5), Me 5 (6)) affords different cyclotrimerization products depending on the Cp ligand used. For the Cp R (R = H) derivative 5, reaction with 2-butyne is exclusively intermolecular, resulting in the formation of a 5:4:1...
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