Fgn. Cloke et al., BIS(L,4BIS(TRIMETHYLSILYL) BUTA-1,3-DIENE) COBALT - SYNTHESIS AND MOLECULAR-STRUCTURE, Journal of organometallic chemistry, 507(1-2), 1996, pp. 245-248
Co-condensation of cobalt atoms with an excess of (E,E)-1,4-bis(trimet
hylsilyl)buta-1,3-diene in hexane at -196 degrees C yields the homolep
tic bis(butadiene) complex [Co{eta-C4H4(SiMe(3))(2)}(2)] (1) as the so
le volatile product. Compound 1 was characterized by H-1 NMR and EPR s
pectroscopy, mass spectrometry and a single-crystal X-ray structure de
termination.