Diboranaphthalene and Related 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 

Derivatives of the closely related heterocycle 9,10-diboraanthracene react with transition metal fragments such as CpCo, Ru(CO)3, and Ni(G8I I 2) to form stable sandwich complexes such as 116-119 that illustrate the versatility of this ligand system.137,138 

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Dinuclear diboranaphthalene and related complexes Lithium [C2H4(Me2N)2]Li[ 76-H6C8B2(NMe2)2]Li[(Me2N)2C2H4] (2,3-diboranaphthalene S, X, H, B 134... 

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