Divalent Transition Metal Silylamide Ate Complexes. Issue 26 (1st August 2014)

• Record Type: Journal Article
• Authors: König, Sonja N.; Schneider, David; Maichle‐Mössmer, Cäcilia; Day, Benjamin M.; Layfield, Richard A.; Anwander, Reiner
• Is Part Of: European journal of inorganic chemistry. Issue 26(2014)
• Page Start: 4302
• Page End: 4309
• Publication Date: 2014-08-01
• Subjects: Transition metals -- Ate complexes -- Alkali metals -- Amides; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201402557
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract: Dimetallic ate complexes were synthesized from the divalent transition metal silylamide complexes {Fe[N(SiMe3 )2 ]2 }2, Cr[N(SiMe3 )2 ]2 (thf), Co[N(SiMe3 )2 ]2 (thf)2, and {Mn[N(SiHMe2 )2 ]2 }2 (thf = tetrahydrofuran) by the addition of the corresponding lithium or sodium silylamide salt. Accordingly, donor‐free LiFe[N(SiMe3 )2 ]3 and NaMn[N(SiHMe2 )2 ]3 as well as thf‐coordinated (thf)NaCr[N(SiMe3 )2 ]3 and (thf)NaCo[N(SiMe3 )2 ]3 were obtained. The thf‐containing mixed iron(II)/lithium bis(trimethylsilyl)amide complex (thf)LiFe[N(SiMe3 )2 ]3 was synthesized by the simple addition of thf to the donor‐free complex LiFe[N(SiMe3 )2 ]3 . All of the complexes were characterized by IR spectroscopy and elemental analysis, and the effective magnetic moments in solution were determined by the Evans method. The solid‐state structures of these bis(trimethylsilyl)amido‐derived complexes were additionally determined by X‐ray crystallography. Abstract : Donor‐free and tetrahydrofuran‐coordinated (thf‐coordinated) ate complexes of the type (thf) x (AM)M(NR2 )3 ( x = 0, 1; AM = Li, Na; M = Fe, Cr, Co, Mn) have been synthesized and characterized. The implications of ion size and donor‐solvent coordination on the solid‐state structures are discussed.