3d-4f magnetic low-dimensional molecular synthesis, structure and characterization

Title: 3d-4f magnetic low-dimensional molecular synthesis, structure and characterization
Author: Ke Red Hill
Degree-granting unit: Changchun University of Technology
Keywords: Schiff base;; polydentate ligand;; earth;; magnetic;; clusters
Summary:
In this paper a multi-tooth Schiff base http://www.everbeenmagnet.com/en/products/110-sintered-neodymium-magnets ligands with transition metal and / or the reaction of eight rare-earth compounds were analyzed for their crystal structure and magnetic properties of the test.
Crystal structure analysis shows that compound 7 (C_ (88) H_ (126) N_4Pr_ (10) O_ (66)) and 8 (C_ (90) H_ (130) N_4Nd_ (10) O_ (66)) is the same structure, but also in the compound 2 (C_ (54) H_ (82) N_4O_ (34) Cl_2Mn_4) and 5 (C_ (66) H_ (126) N_4O_ (50) Cl_2Mn_4Nd_2), 6 (C_ (96) H_ (148) N_6O_ (70 ) Dy_ (10)) ,7-8 in two different ligand coordination modes and metal coordination, more interesting is that in compound 6 groups, Neodymium Magnets we found five different acid base coordination mode of the co-existence, However, compounds 7 and 8 are only three different acid base groups co-exist with the bit pattern.
Magnetic tests show that all compounds intramolecular antiferromagnetic interaction exists, but also for compounds 5 and 6 for further ac susceptibility measurements, but they did not observe the slow relaxation of magnetization.
Degree Year: 2010