Triple-decker cobalt-metal complexes

An extended Hiickel MO investigation of 1,4-dihydrodiboranaphthalene double- and triple-decker sandwiches134 (e.g., 109 and 110) supports a description of these as 18 and 30 ve complexes, respectively.1343 l,3-dihydro-l,3-diboranaphthalene complexes of cobalt and iron 111-113 have been synthesized and crystallographically characterized.135 Metal complexes of the 1,4-diboratetralene ligand 114, 115 have also been prepared.136... 

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