authors |
Ferreira, BJML; Brandao, P; Dos Santos, AM; Gai, Z; Cruz, C; Reis, MS; Santos, TM; Felix, V |
nationality |
International |
journal |
JOURNAL OF COORDINATION CHEMISTRY |
author keywords |
Heptacopper(II); Dicopper(II); Copper cluster; Adenine complexes; Magnetic properties |
keywords |
DINUCLEAR COPPER(II) COMPLEX; ARENE INCLUSION COMPLEXATION; CRYSTAL-STRUCTURE; COORDINATION POLYMERS; BUILDING-BLOCKS; DNA-BINDING; HEPTANUCLEAR; TETRANUCLEAR; CLUSTER; CORE |
abstract |
The syntheses, crystal structures, and magnetic properties of two new copper(II) complexes with molecular formulas [Cu-7((2)-OH2)(6)((3)-O)(6)(adenine)(6)](NO3)(2)6H(2)O (1) and [Cu-2((2)-H2O)(2)(adenine)(2)(H2O)(4)](NO3)(4)2H(2)O (2) are reported. The heptanuclear compound is composed of a central octahedral CuO6 core sharing edges with six adjacent copper octahedra. In 2, the copper octahedra shares one equatorial edge. In both compounds, these basic copper cluster units are further linked by water bridges and bridging adenine ligands through N3 and N9 donors. All copper(II) centers exhibit Jahn-Teller distorted octahedral coordination characteristic of a d(9) center. The study of the magnetic properties of the heptacopper complex revealed a dominant ferromagnetic intra-cluster interaction, while the dicopper complex exhibits antiferromagnetic intra-dimer interactions with weakly ferromagnetic inter-dimer interaction. |
publisher |
TAYLOR & FRANCIS LTD |
issn |
0095-8972 |
year published |
2015 |
volume |
68 |
issue |
16 |
beginning page |
2770 |
ending page |
2787 |
digital object identifier (doi) |
10.1080/00958972.2015.1061126 |
web of science category |
Chemistry, Inorganic & Nuclear |
subject category |
Chemistry |
unique article identifier |
WOS:000359822900003
|