INTRAMOLECULARLY STABILIZED GALLACYCLOHEXANES AND INDACYCLOHEXANES, GALLACYCLOPENTANES, INDACYCLOPENTANES AND GALLACYCLOPENTENES, INDACYCLOPENTENES - X-RAY STRUCTURAL-ANALYSIS OF (CH2)(5)GA(CH2)(3)NME(2), (CH2)(5)GACH(2)CHCH(3)CH(2)NME(2) AND (C6F(5))(2)IN(CH2)(3)NME(2)

The intramolecularly stabilized metallacyclic organogallium and organoindium compounds (CH2)(n)M(CH2)(3)NR(2) (2, 3, 4, 7) and (CH2)(n)GaCH(2)CHMeCH(2)NMe(2) (5, 6) have been synthesized from GaCl3 or InCl3 and (3-dimethylamino)propyl lithium, (3-diethylamino)propyl lithium or (3-dimethylamino)-2-methylpropyl lithium, and BrMg(CH2)(n)MgBr (n = 4, 5). (C6F5)(2)InBr reacts with (3-dimethylamino)propyl lithium yielding (C6F5)(2)In(CH2)(3)NMe(2) (8), and CH(2)CMe=CMeCH(2)Ga(CH2)(3)NMe(2) (10) was made from (C5H5)(2)ZrCH(2)CMe=CMeCH(2) and Cl2Ga(CH2)(3)NMe(2). The H-1, C-13 NMR and mass spectra of the new compounds, as well as the X-ray crystal structure analyses of 4, 6, and 8 are discussed.