Intramolekular stabilisierte galla- und Indacyclohexane, -cyclopentane und -cyclopentene; Ro¨ntgenstrukturanalyse von (CH2)5Ga(CH2)3NM

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