Exploring The Performance Improvement Of Magnetocaloric Effect Based Gd-Exclusive Cluster Gd-60

Despite wide potential applications of Gd-clusters in magnetocaloric effect (MCE) owing to f(7) electron configuration of Gd(III), the structural improvement in order to enhance MCE remains difficult. A new approach of the situ hydrolysis of acetonitrile is reported, and the slow release of small ligand CH3COO- is realized in the design and synthesis of high-nuclearity lanthanide clusters. A large lanthanide-exclusive cluster complex, [Gd-60(CO3)(8)(CH3COO)(12)(mu(2)-OH)(24)(mu(3)-OH)(96)(H2O)(56)] (NO3)(15)Br-12(dmp)(5)center dot 30CH(3)OH center dot 20Hdmp (1-Gd-60), was isolated under solvothermal conditions. To the best our knowledge, cluster 1 possesses the high metal/ligand ratio (magnetic density) and the largest magnetic entropy change (-Delta S-m(max) = 48.0 J kg(-1) k(-1) at 2 K for Delta H = 7 T) among previously reported high-nuclearity lanthanide clusters.