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Synthesis and crystal structures of lanthanide complexes with foliage growth regulator: phenoxyalkanoic acid
Abstract:
Reactions of Ln(ClO4)3?·?6H2O (Ln=La(III), Eu(III), Nd(III)), 1,10-phenanthroline (phen) and phenoxyacetic acid (PA) or 2,4-dichlorophenoxyacetic acid (2,4-D) yield [La(PA)2 (phen)2]2(ClO4)2 (1), [Eu(2,4-D)2(phen)2]2(ClO4)2 (2) and [Nd(2,4-D)3(C2H5OH)] n (3). Compounds 13 are characterized by elemental analyses, IR, UV–Vis, ESI-MS spectra and TGA. 1 is also characterized by 1H and 13C NMR. Single crystal X-ray diffraction analyses reveal that 1 and 2 are binuclear, and 3 has a one-dimensional polymeric structure. The La(III), Eu(III) and Nd(III) are nine-coordinate with a distorted tricapped trigonal-prism geometry.
Keywords:Lanthanide complexes  Phenoxyacetic acid  2,4-Dichlorophenoxyacetic acid  Crystal structures  Lanthanum  Neodymium  Europium
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