Synthesis and crystal structure of [Y(C5Me4SiMe3){μ-O(CH2)3CH3}{N(SiHMe2)2}]2

A dimeric yttrium complex [Y(C5Me4SiMe3){μ-O(CH2)3CH3}{N(SiHMe2)2}]2 (1) was isolated as one of the byproducts from the reaction of Y{N(SiHMe2)3}3(THF)2 with C5Me4HSiMe3 in 1:1.1 molar ratio in toluene at 100 °C for 2 d. Complex 1 was characterized by elemental analysis, NMR spectroscopy, FT-IR spectroscopy, and X-ray single crystal structure analysis. X-ray diffractions revealed that complex 1 was a symmetric dimer, and the center metal Y3+ was six-coordinated by one nitrogen atom from the amide group, two bridging oxygen atoms from the O(CH2)3CH3 groups, and one cyclopentadienyl ring in η5-fashion to adopt a distorted tetrahedron geometry. The formation of complex 1 was postulated to be a result from C-O bond cleavage reaction of THF.