The compounds [Ni(L1)(pyc-)2]·2H2O(1) (L1 = C-meso–5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane; Hpyc = pyrazinecarboxylic acid) and [Cu(L2)(Hcpdc-)2](2) (L2 = 3,14-dimethyl-2,6,13,17-tetraazatricyclo[14,4,01.18,07.12]docosane; H2cpdc = cyclopropanedicarboxylicacid) have been s...
The compounds [Ni(L1)(pyc-)2]·2H2O(1) (L1 = C-meso–5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane; Hpyc = pyrazinecarboxylic acid) and [Cu(L2)(Hcpdc-)2](2) (L2 = 3,14-dimethyl-2,6,13,17-tetraazatricyclo[14,4,01.18,07.12]docosane; H2cpdc = cyclopropanedicarboxylicacid) have been synthesized and structurally characterized. The crystal structure of 1 shows a distorted octahedral coordination geometry around nickel(II) ion, with four secondary amines and two nitrogen atoms of the pyc ligand at the transposition. In 2, the coordination environment around the central copper(II) ion reveals a Jahn-Teller distortion octahedron with four Cu-N bonds and two Cu-O distances. The electronic spectra, electrochemical and TGA behavior of the complexes are significantly affected by the nature of the axial Hpyc and H2cpdc ligands.
The compounds [Ni(L1)(pyc-)2]·2H2O(1) (L1 = C-meso–5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane; Hpyc = pyrazinecarboxylic acid) and [Cu(L2)(Hcpdc-)2](2) (L2 = 3,14-dimethyl-2,6,13,17-tetraazatricyclo[14,4,01.18,07.12]docosane; H2cpdc = cyclopropanedicarboxylicacid) have been synthesized and structurally characterized. The crystal structure of 1 shows a distorted octahedral coordination geometry around nickel(II) ion, with four secondary amines and two nitrogen atoms of the pyc ligand at the transposition. In 2, the coordination environment around the central copper(II) ion reveals a Jahn-Teller distortion octahedron with four Cu-N bonds and two Cu-O distances. The electronic spectra, electrochemical and TGA behavior of the complexes are significantly affected by the nature of the axial Hpyc and H2cpdc ligands.
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