2001 年 25 巻 4_2 号 p. 755-758
Layered perovskites (RNH3)2CuCl4 were synthesized, where R was C6H5(CH2)-, C6H5(CH2)2-, 1-C10H7(CH2)-, 2-C10H7(CH2)-, 1-C6H5N=NC6H4O(CH2)3- and 1-C6H5COC6H4O(CH2)3-. These complexes showed ferromagnetism, with different Curie temperatures, Tc, depending on the structure of the molecules. These Tc seem to be independent of the distance of interlayer space between CuCl-based layers. The complexes with naphthalene showed lower Tc than those with benzene. Since naphthalene has more π-electrons than benzene, the degree of electronic state mixing between the organic and the inorganic layers might change and affect the interlayer magnetic interaction J’.