Premium
Paramagnetic Bis(amidinate) Iron(II) Complexes and their Diamagnetic Dicarbonyl Derivatives
Author(s) -
Vendemiati Beatrice,
Prini Giansiro,
Meetsma Auke,
Hessen Bart,
Teuben Jan H.,
Traverso Orazio
Publication year - 2001
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200103)2001:3<707::aid-ejic707>3.0.co;2-z
Subject(s) - chemistry , paramagnetism , octahedron , diamagnetism , lithium (medication) , derivative (finance) , crystallography , monomer , yield (engineering) , crystal structure , medicinal chemistry , inorganic chemistry , organic chemistry , medicine , physics , materials science , quantum mechanics , magnetic field , financial economics , economics , metallurgy , endocrinology , polymer
Reactions of two equivalents of the lithium amidinate salts Li[ t BuC(NR) 2 ] (R = i Pr, cyclohexyl) with FeCl 2 have been found to yield paramagnetic bis(amidinate) iron(II) compounds of the type [ t BuC(NR) 2 ] 2 Fe. In the case of R = cyclohexyl, the product has been characterized by single‐crystal X‐ray diffraction analysis as having a distorted tetrahedral geometry. The derivative with R = i Pr is an oil, but its 1 H and 13 C NMR spectra indicate a similar monomeric structure. Both species have been found to react readily with CO to give the new diamagnetic Fe II dicarbonyls [ t BuC(NR) 2 ] 2 Fe(CO) 2 . The compound with R = i Pr has been structurally characterized, which showed it to have a strongly distorted octahedral structure with the carbonyls in a cis arrangement.