title: Multi-component synthesis of trimetallic tetranuclear clusters [Cu(L)(H(2)O)](2)Ln(H(2)O)(2)Cr(C(2)O(4))(3).12H(2)O (H(2)L = 1,4,8,11-tetraazacyclotradecane-2,3-dione, Ln(3+) = Gd, Tb and Dy).
abstract: Novel tetranuclear Cu(ii)-Ln(iii)-Cr(iii) complexes with oxamidate and oxalate bridges have been prepared using [Cu(L)], LnCl(3).6H(2)O and K(3)[Cr(ox)(3)] components (ox(2-) = oxalate) during the development of new multimetallic complexes as molecular magnets. Overall ferromagnetic properties have been observed in the Cu(2)GdCr compound, and no single-magnet behavior has been found in the Cu(2)TbCr and Cu(2)DyCr compounds.
authors: Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China. kouhz@mail.tsinghua.edu.cn
authors: Hui-Zhong
authors: HZ
authors: Kou
authors: Kong-Qiu
authors: KQ
authors: Hu
authors: Hao-Yan
authors: HY
authors: Zhao
authors: Junkui
authors: J
authors: Tang
authors: Ai-Li
authors: AL
authors: Cui
mesh_terms: D002857:Chromium / Q000737:chemistry*; D056831:Coordination Complexes / Q000138:chemical synthesis* / Q000737:chemistry; D003300:Copper / Q000737:chemistry*; D018360:Crystallography, X-Ray; D004419:Dysprosium / Q000737:chemistry; D005682:Gadolinium / Q000737:chemistry; D028581:Lanthanoid Series Elements / Q000737:chemistry*; D008280:Magnetics; D008968:Molecular Conformation; D009942:Organometallic Compounds / Q000737:chemistry*; D010070:Oxalates / Q000737:chemistry; D010072:Oxamic Acid / Q000737:chemistry; D013696:Temperature; D013725:Terbium / Q000737:chemistry
chemical_list: D056831:Coordination Complexes; D028581:Lanthanoid Series Elements; D009942:Organometallic Compounds; D010070:Oxalates; D013725:Terbium; D002857:Chromium; D004419:Dysprosium; D003300:Copper; D005682:Gadolinium; D010072:Oxamic Acid