title: Facile access of stable divalent tin compounds with terminal methyl, amide, fluoride, and iodide substituents.
abstract: The stable beta-diketiminate tin(II) complexes LSnX [L = HC(CMeNAr)2, Ar = 2,6-iPr2C6H3] with terminal methyl, amide, fluoride, and iodide (X = Me, N(SiMe3)2, F, I) are described. LSnMe (2) is synthesized by salt metathesis reaction of LSnCl (1) with MeLi and can be isolated in the form of yellow crystals in 88% yield. Compound LSnN(SiMe3)2 (3) was obtained by treatment of LH with 2 equiv of KN(SiMe3)2 in THF followed by adding 1 equiv of SnCl2. Reaction of 2 and 3 respectively with Me3SnF in toluene provided the tin(II)fluoride LSnF (4) with a terminal fluorine as colorless crystals in 85% yield. 4 is highly soluble in common organic solvents. The reaction of LLi(OEt2) with 1 equiv of SnI2 in diethyl ether afforded the LSnI (5). Compounds 2, 3, 4, and 5 were characterized by microanalysis, multinuclear NMR spectroscopy, and X-ray structural analysis. Single crystal X-ray structural analyses indicate that all the compounds (2, 3, 4, 5) are monomeric and the tin center resides in a trigonal-pyramidal environment.
authors.affiliation: Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany.
authors.forename: Anukul
authors.initials: A
authors.lastname: Jana
authors.forename: Herbert W
authors.initials: HW
authors.lastname: Roesky
authors.forename: Carola
authors.initials: C
authors.lastname: Schulzke
authors.forename: Alexander
authors.initials: A
authors.lastname: Döring
authors.forename: Tobias
authors.initials: T
authors.lastname: Beck
authors.forename: Aritra
authors.initials: A
authors.lastname: Pal
authors.forename: Regine
authors.initials: R
authors.lastname: Herbst-Irmer