Synthesis, structure, solid-state thermal decomposition and magnetic properties of binuclear Nd, Gd and Eu cymantrenecarboxylates |
| |
| Authors: | PS Koroteev MA KiskinZhV Dobrokhotova AS BogomyakovNN Efimov VM Novotortsev |
| |
| Institution: | a N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky prosp. 31, 119991 Moscow, GSP-1, Russian Federation
b Institute International Tomography Centre, Siberian Branch, Russian Academy of Sciences, Institutskaya str. 3a, 630090 Novosibirsk, Russian Federation |
| |
| Abstract: | New rare-earth cymantrenecarboxylates Nd2(μ2-OOCCym)4(OOCCym)2(THF)4] (1) and Ln2(μ2-OOCCym)4(OOCCym)2(THF)4]·THF (Ln = Gd (2), Eu (3); Cym = (η5-C5H4)Mn(CO)3) were synthesized starting from carboxycymantrene and lanthanide nitrates, and characterized by X-ray diffraction. The crystals of 1-3 consist of isolated binuclear molecules; the Ln atoms are eight-coordinate. The magnetic properties of 2 are indicative of antiferromagnetic coupling between the Gd atoms at liquid helium temperature. The thermal decomposition of complexes 1-3 was studied by differential scanning calorimetry (DSC) and thermogravimetry (TG). According to the X-ray powder diffraction patterns, the thermal decomposition of the complexes in air affords a mixture of LnMn2O5 and Mn2O3 as the final products. |
| |
| Keywords: | Heterometallic REE complexes Cymantrenecarboxylate ligands X-ray diffraction study Magnetic properties Phase transition Thermal decomposition REE manganites |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
