CRYSTAL-STRUCTURES OF [H4L] (CLO4)4.6H2O AND [ZN(H2L)(S2O6)2].4H2O (L = 6,13-DIMETHYL-1,4,8,11-TETRAAZACYCLOTETRADECANE-6,13-DIAMINE)

The substituted macrocycle 6, 13-dimethyi-l, 4, 8, ll-tetraazacyclotetradecane-6, 13-diamine (L) can be crystallized as the perchlorate salt or the zinc dithionate complex. The crystal structures of [H4L](CIO4)4.6H2O (1) and [Zn(H2L)(S2O6)2].4H2O (2) have been determined by X-ray diffraction methods and refined to a residual of 0·058 for 1926 independent observed reflections for (1) and 0·022 for 2122 independent reflections for (2). The crystals of (1) are monoclinic, P21/c, a 10·657(2), b 12·466(7), c 12·216(3) Å, β 96·73(2)° and those of (2) are monoclinic, P21/c, a 8·521(1), b 12·990(1), c 12·731(1) Å, β 105·45(1)°. The pendant primary amines in the zinc(II) complex of L are protonated and not coordinated, with conformational geometry very similar in both structures. © 1990 ASEG.