HEXADENTATE N3O3 AMINE PHENOL LIGANDS FOR GROUP-13 METAL-IONS - EVIDENCE FOR INTRASTRAND AND INTERSTRAND HYDROGEN-BONDS IN POLYDENTATE TRIPODAL AMINE PHENOLS

{Several N3O3 amine phenols (H-3L1 = 1,2,3-tris((2-hydrox benzyl)amino)propane; H-3L2 = 1,2,3-tris((5-chloro-2-hydroxybenzyl)amino)propane; H-3L3 = 1,2,3-tris((2-hydroxy-5-methoxybenzyl)amino)propane; H-3L4 = 1,2,3-tris((3,5-dichloro-2-hydroxybenzyl)amino)propane) were prepared and characterized by various spectroscopic methods (IR, FAB-MS, NMR). The N3O3 amine phenols are KBH4 reduction products of the corresponding Schiff bases derived from the condensation reactions of tap (tap = 1,2,3-triaminopropane) with 3 equiv of either salicylaldehyde or ring-substituted salicylaldehydes. Neutral binary metal complexes, [M(L)] (M = Al