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Synthesis, Structure, and Properties of Iron(II) and Manganese(II) Bis[Tris(1‐Ethyl‐4‐Methylimidazolyl‐κN)Phosphine] Complexes
Author(s) -
Malkhasian Aramice Y. S.,
Nikolovski Borislava,
Kucera Benjamin E.,
Loloee Reza,
Chavez Ferman A.
Publication year - 2007
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.200700041
Subject(s) - trifluoromethanesulfonate , manganese , chemistry , phosphine , crystallography , spin crossover , octahedron , tris , medicinal chemistry , stereochemistry , inorganic chemistry , crystal structure , organic chemistry , biochemistry , catalysis
Fe II L 2 (OTf) 2 ( 1 ) and Mn II L 2 (OTf) 2 ( 2 ) (L = tris(1‐ethyl‐4‐methylimidazolyl‐κN)phosphine; OTf= trifluoromethanesulfonate) were synthesized and their X‐ray structures were determined. Both complexes possess distorted octahedral geometry with high spin electron configuration at ambient temperature. Compound 1 exhibits a quasi‐reversible wave with E 1/2 of 0.745 V versus Ag/AgNO 3 . Variable temperature magnetic measurements indicate that no spin‐crossover phenomenon for 1 is observed between 2.5 and 300 K. In addition, a plot of 1/χ M versus T(K) is linear with a Curie constant of 3.48 emu mol −1 K.