SYNTHESES AND CRYSTAL-STRUCTURES OF N,N'-BIS(2-HYDROXYBENZYL)PIPERAZINE, ITS NITRATE SALT AND COPPER(II) ACETATE COMPLEX

The syntheses and structures of N,N'-bis (2-hydroxybenzyl)piperazine ( C18H22N2O2, 2), its nitrate salt (C18H24N4O8, 2a) and copper(II) aceta te complex (C22H26N2O6Cu2, 2b) are described. Compound 2 was character ized by H-1 and C-13 NMR and mass spectrometry. The structures of all compounds were determined by X-ray structure analysis. Crystal data: 2 : monoclinic, space group P2(1)/c (No. 14), a = 6.745(6), b = 8.796(2) , c = 13.407(2) Angstrom, beta = 98.99(3)degrees, V = 785.7(7), Z = 2; 2a: orthorhombic, space group Pbca (No. 61), a = 9.773(4), b = 23.332 (4), c = 8 963(1) Angstrom, V = 2035.4(9), Z = 4; 2b: monoclinic, spac e group P2(1)/n (No. 14), a = 12.197(4), b = 7.061(3), c = 13.300(2) A ngstrom, beta = 98.83(3)degrees, V = 1131.9(7), Z = 2. Compound 2b has a polymeric structure via five-coordinated copper atoms.