AMINOTRIAZINES AS LOCKING FRAGMENTS IN MACROCYCLIC SYNTHESIS

The macrocyclic compounds yl)-1,4,6,8,11-pentaazacyclotetradecane)copp er(II) triperchlorate dihydrate, [Cu(HL2)](ClO4)(3). 2H(2)O, yl)-1,4,6 ,8,11-pentaazacyclotetradecane)copper(II) diperchlorate hydrate, [CuL3 ](ClO4)(2). H2O, and [(6-(4',6'-dioxo-1'H-1',3',5'-triazinyl) 1,4,6,8, 11-pentaazacyclotetradecane)copper(II)] diperchlorate, [CuL4](ClO4)(2) , have been synthesized. The macrocycles synthesized contain respectiv ely pendant melamine, ammeline,and ammelide rings. The X-ray cyrstallo graphic analyses of [Cu(HL2)](ClO4)(3). 2H(2)O, triclinic, space group P (1) over bar, a = 9.489(10) Angstrom, b = 12.340(2) Angstrom, c = 2 4.496(4) Angstrom, alpha = 87.74(10)degrees beta = 85.51(10)degrees ga mma = 70.95(10)degrees and Z = 4, and {[CuL3](ClO4)(2). H2O}2, monocli nic, space group C2/c, a = 18.624(8) Angstrom, b = 17.160(2) Angstrom, c = 15.998(6) Angstrom, beta = 117.82(2)degrees, and Z = 4, are repor ted. The structure of [Cu(HL2)](ClO4)(3). 2H(2)O shows the formation o f linear tapes, formed by a combination of hydrogen bonds and pi-pi st acking interactions. The structure of [CuL3](ClO4)(2). H2O displays fo rmation of dimers, formed by a coordinate bond from the oxygen in one molecule to the copper atom of another. The tautomeric forms of the am meline and ammelide moieties have been determined. The potential of th ese compounds as subunits for cocrystallization has been investigated.