Azaborolinyl-Komplexe, IX Die Kristall- und Molekülstrukturen von zwei Isomeren des Bis(1-tert-butyl-2-methyl-η-1.2-azaborolinyl)cobalts/Azaborolinyl Complexes, IX The Crystal and Molecular Structures of Two Isomers of Bis(1-tert-butyl-2-methyl-η-1,2-azaborolinyl)cobalt
1983 ◽
Vol 38
(4)
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pp. 485-492
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Keyword(s):
X Ray
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Abstract The crystal and molecular structures of two isomers of bis(1-tert-butyl-2-methyl-η-1,2-azaborolinyl)cobalt have been determined by single-crystal X-ray diffraction methods. Isomer 1 shows a clockwise, isomer 2 an anti-clockwise conformation of the azaborolinyl rings. In both compounds the azaborolinyl rings have staggered orientations with opposite positions of the tert-butyl groups. The rings in 1 and 2 are slipped so that the three ring carbon atoms are closer to the cobalt atom than the BN groups. The staggered orientation of the ligands in 2 is probably due to a packing effect, as in similar sandwich complexes the anti-clockwise conformers show eclipsed orientation.