The chemistry of 1,3,5-triazacyclohexane complexes 5: cationic zinc(II) alkyl complexes of N-alkylated 1,3,5-triazacyclohexanes and 13-benzyl-1,5,9-triazatricyclo[7.3.1.0]-tridecane

Diethylzinc reacts with hydroperchlorates of N-alkylated 1,3,5-triazacyclohexanes (R₃TAC; R = methyl (Me), benzyl (Bz), isopropyl (ⁱPr)) and with the hydrotetrafluoroborate of 1,3,5-tris-(para-fluorobenzyl)-1,3,5-triazacyclohexane (FBz₃TAC) to give the corresponding cationic zinc ethyl complexes (R₃TAC)Zn(Et)]X] (X = ClO₄^?, BF₄^?). Similar complexes were obtained from diethylzinc treated with HNMe₂Ph]BF₄] or HNMe₂Ph]B(C₆F₅)₄](Et₂O) in the presence of R₃TAC (R = Bz, FBz, s-1-phenylethyl (s-PhMeCH)). A product of decomposition of (Bz₃TAC)Zn(Et)]ClO₄] was analyzed by X-ray diffraction. The structures of ({s-PhMeCH}₃TAC)Zn(Et)]BF₄] an (FBz₃TAC)Zn(Et)]BF₄] were estimated using nuclear Overhauser enhancement spectroscopy. Protonolysis of diethylzinc with HNMe₂Ph]BF₄] in the presence of 13-benzyl-1,5,9-triazatricyclo7.3.1.0^5,13]-tridecane (BzTATC) yielded the complex (BzTATC)Zn(Et)]BF₄].