@ARTICLE{, author = {}, title = {Synthesis of two New Dinuclear Copper(II) Complexes and ESR Studies ofCopper(II) – Copper(II) Interaction Through  System}, volume = {18}, number = {58}, abstract ={Our main objective is a better understanding of spin spin interaction of dinuclear copper(II) complexes through  system. The synthesis and characterization of two new dinuclear copper(II) complexes, based on the use of large, pyrole-containing macrocycles, the so called “ expanded porphyrins” , [Cu2(macrocycle)]4+ is described. A chloroform solution spectrum of two complexes taken at room temperature and 130135 K gave a classic electron spin resonance (ESR) pattern for both compounds. Both complexes show a triplet state(S = 1), with both M = 1 and M = 2 (half field) transition which is the characteristics of Cu(II) Cu(II) dimer. The observation of M = 2 band strongly suggests the spin spin interaction occurs through  system. All compounds exhibit a typical M = 1 transition with superhyperfine splitting due to the 14N bound to copper. }, URL = {http://jsci.khu.ac.ir/article-1-1136-en.html}, eprint = {http://jsci.khu.ac.ir/article-1-1136-en.pdf}, journal = {Journal title}, doi = {}, year = {2004} }