The isotypic crystal structures of two titanocene complexes containing an EMe 3 unit (E = Al, Ga; Me = methyl) with two 2 -coordinating methyl groups, namely[GaTi(CH 3 ) 3 (C 10 H 15 )(C 15 H 18 )], are reported. Reacting a dinuclear nitrogenbridged low-valent titanium(III) complex with the Lewis acids AlMe 3 or GaMe 3 results in the loss of molecular dinitrogen and the formation of two monomeric titanocene(III) fragments bearing two 2 -bridging methyl groups. Single crystal X-ray diffraction reveals the formation of a new E-C bond involving the pentafulvene ligand while the bridging and terminal methyl groups remain intact.

CCDC no.: 1485820The title complex is shown in the gure. Tables 1 and 2 contain details of the measurement method and a list of the atoms including atomic coordinates and displacement parameters.

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