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>Reaction of trimethylaluminum and trimethylgallium with bifunctional amines: Syntheses and molecular structures of Me2Al−N(CH2CH2)2−C−(OCH2)22and Me2Ga−N(Si(H)Me2)22
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Reaction of trimethylaluminum and trimethylgallium with bifunctional amines: Syntheses and molecular structures of Me2Al−N(CH2CH2)2−C−(OCH2)22and Me2Ga−N(Si(H)Me2)22
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机译：Reaction of trimethylaluminum and trimethylgallium with bifunctional amines: Syntheses and molecular structures of Me2Al−N(CH2CH2)2−C−(OCH2)22and Me2Ga−N(Si(H)Me2)22
The crystalline products Me2Al−N(CH2CH2)2−C−(OCH2)22(I) and Me2Ga−N(Si(H)Me2)22(II) were prepared from reactions of trimethylaluminum and trimethylgallium with 1,4-dioxa-8-azaspiro4.5-decane and 1,1,3,3-tetramethyldisilazane, respectively, in toluene. The organoaluminum dimer crystallizes in the monoclinic space groupP21/cwith unit cell parametersa=8.970(2) Å,b=9.683(2) Å,c=12.833(3) Å, β=103.18(2)°,V=1085.3(3) Å3, andDcalcd=1.22 g cm−3forZ=2. Least-squares refinement based on 935 observed reflectionsI>3σ(I) in the range 3.5°3σ(I) in the range 3.5°<2ϑ<48.0° led to a finalRfactor of 0.055 (Rw=0.070). Both compoundsIandIIreside about a crystallographic center of symmetry and contain a planar M2N2(M=Al forI, Ga forII) four-membered rin
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