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Synthesis, Structure, and Magnetic Properties of Two Novel Dinuclear Complexes involving Lanthanide‐phenoxo Anion Radical
Author(s) -
Liu Ruina,
Liu Li,
Fang Dong,
Xu Jie,
Zhao Sanping,
Xu Weilin
Publication year - 2015
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201400497
Subject(s) - lanthanide , crystallography , nitroxide mediated radical polymerization , chemistry , octahedron , ion , single crystal , crystal structure , polymer , organic chemistry , radical polymerization , polymerization
Two novel chelating anion nitronyl nitroxide radical bridged dinuclear lanthanide complexes [Tb 2 (hfac) 4 (NIT2PhO) 2 ] ( 1 ) and [Ho 2 (hfac) 4 (NIT2PhO) 2 ] ( 2 ) [hfac = hexafluoroacetylacetonate; NIT2PhO = 2‐(2′‐hydroxyphenyl)‐4,4,5,5‐tetramethyl‐imidazoline‐1‐oxyl‐3‐oxide] were prepared and structurally characterized by single crystal X‐ray diffraction, elemental analysis, and IR spectroscopy. Both complexes are dinuclear phenoxo‐O anion bridged with the oxygen atom of the N–O group coordinated to a single Ln (hfac) 2 unit. The central Ln atoms exhibit a heptacoordinated environment, and the shape around the metal atom is capped octahedral. This structure is first reported in the lanthanide‐nitronyl nitroxide system. It provides an innovative approach to synthesize new dinuclear lanthanide‐nitroxide‐based complexes. Additionally, the magnetic properties of the two complexes are studied.