Abstract: (6200 Views)
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 130135 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.
Published: 2004/08/15