摘要
<正> Three novel 16-member macrocyclic complexes containing 4 manganese atoms on ring and 2phthalate as bridging ligand have been synthesized.The composition of the complexes has been determinedby elemental analyses and characterized by IR and magnetic balance.The crystal structure of the complex[Mn4（μ-phth）2（bpy）8]（ClO4）·3H2O has been determined.Crystal data:space group P （?）,with a=14.276（6）,b=14.369（9）,c=15.540（1） （?）,α=70.22（5）,β=61.73（6）,γ=66.38（5）°,Z=1.The vari-able-temperature magnetic susceptibility （4-300 K） of [Mn4（μ-phth）2（bpy）8] （ClO4）4·3H2O and [Mn4（μ-phth）2（phen）8]（ClO4）)4·2H2O has been determined and the susceptibility data are least squares fit tothe susceptibility equation derived from the spin Hamihonian （?）=-2J（（?）1·（?）2+（?）2·（?）3+（?）3·（?）4+（?）1·（?）4）.The exchange intergral,J,has been found equal to 0.53 cm-1（bpy） and 0.23 cm-1（phen）.This indi-cates a weak ferromagnetic spin exchange interaction among the metal ions.
Three novel 16-member macrocyclic complexes containing 4 manganese atoms on ring and 2phthalate as bridging ligand have been synthesized.The composition of the complexes has been determinedby elemental analyses and characterized by IR and magnetic balance.The crystal structure of the complex[Mn<sub>4</sub>（μ-phth）<sub>2</sub>（bpy）<sub>8</sub>]（ClO<sub>4</sub>）<sub>·</sub>3H<sub>2</sub>O has been determined.Crystal data:space group P （?）,with a=14.276（6）,b=14.369（9）,c=15.540（1） （?）,α=70.22（5）,β=61.73（6）,γ=66.38（5）°,Z=1.The vari-able-temperature magnetic susceptibility （4-300 K） of [Mn<sub>4</sub> （μ-phth）<sub>2</sub>（bpy）<sub>8</sub>] （ClO<sub>4</sub>）<sub>4</sub>·3H<sub>2</sub>O and [Mn<sub>4</sub>（μ-phth）<sub>2</sub>（phen）<sub>8</sub>]（ClO<sub>4</sub>）)<sub>4</sub>·2H<sub>2</sub>O has been determined and the susceptibility data are least squares fit tothe susceptibility equation derived from the spin Hamihonian （?）=-2J（（?）<sub>1</sub>·（?）<sub>2</sub>+（?）<sub>2</sub>·（?）<sub>3</sub>+（?）<sub>3</sub>·（?）<sub>4</sub>+（?）<sub>1</sub>·（?）<sub>4</sub>）.The exchange intergral,J,has been found equal to 0.53 cm<sup>-1</sup>（bpy） and 0.23 cm<sup>-1</sup>（phen）.This indi-cates a weak ferromagnetic spin exchange interaction among the metal ions.
基金
the National Natural Science Foundation of China.
