Zur Synthese und Struktur neuer penta- und hexakoordinierter Organozinnverbindungen

CisversusTrans: The Coordination Environment about the Tin(IV) Atom in Spirocyclic Amino Alcohol Derivatives

“…Especially the coordination mode about the tin atom and the strength of the intramolecular N→Sn coordination as a function of the identity of the substituents R and R′ were studied . With growing environmental awareness, nontoxic inorganic tin compounds lacking any tin–carbon bonds are in the focus of research . Amino alcoholate derivatives of tin are such inorganic compounds.…”

“…[2] With growinge nvironmental awareness, nontoxic inorganic tin compounds [3] lacking any tin-carbon bonds are in the focus of research. [4,[5][6][7][8][9] Aminoa lcoholate derivatives of tin are such inorganic compounds.T hey are of commerciali nterest as they are delayed-action catalysts forp olyurethane formation. [10][11][12] In continuationo fo ur systematic studies on amino alcohol derivatives of tin, herein we report ac ombined experimental and theoretical approach to symmetricala nd unsymmetrical spirocyclic tin(IV) amino alcoholates and study in detail the factors that control the coordination environment about the central tin atoms.…”

“…The syntheses of amino alcohols MeN(CH 2 CH 2 CMe 2 OH) 2 (1), MeN(CMe 2 CH 2 OH)(CH 2 CMe 2 OH) (2), MeN(CH 2 CH 2 CH 2 OH)(CH 2 CMe 2 OH) (3), MeN-(CH 2 CH 2 CMe 2 OH)(CH 2 CMe 2 OH) (4), MeN(CH 2 CH 2 CMe 2 OH)-(CH 2 CH 2 OH) (5), and MeN(CH 2 CH 2 OH)( CH 2 CH 2 CH 2 OH) (6) as well as spirocyclic tin(IV)a lkoxides spiro-[nBuN(CH 2 CMe 2 O) 2 ] 2 Sn (7), spiro-[MeN(CH 2 CH 2 CMe 2 O) 2 ] 2 Sn (8), spiro-[para-FC 6 Sn (14)a re reported.T he compounds were characterized by 1 H, 13 C( 1-14)a nd 119 N MR and IR spectroscopy,E IMS and single-crystalX RD (2, 7-10 and 13,…”

“…Selected interatomic distances []: Sn(1)ÀO(11) 2.0337(11), Sn(1)ÀO(18) 2.0206(12), Sn(1)ÀN(14) 2.2543(14). Selectedinteratomic angles[8]: O(11)-Sn(1)-O(11)(i)1 80.00(7), O(18)(i)-Sn(1)-O(18)180.0, N(14)(i)-Sn(1)-N(14) 180.0. Symmetrytransformations used to generate equivalent atoms:(i) Àx + 1, Ày, Àz + 1.…”

Water‐Soluble Organotin Compounds – Syntheses, Structures and Reactivity towards Fluoride Anions in Water

“…This signal is more high field‐shifted than the resonances for comparable intramolecularly hexacoordinated diorganotin dichlorides {Me 2 N(CH 2 ) 2 CMe 2 } 2 SnCl 2 ( δ = –257.5 ppm), [ 17 ] {Me 2 N(CH 2 ) 3 } 2 SnCl 2 ( δ = –185 ppm), [ 10 ] and {CH 2 N(Me)CH 2 CH 2 CH 2 } 2 SnCl 2 ( δ = –176.5 ppm). [ 18 ] The differences are likely the result of compound 1 having no intramolecular N→Sn coordination involving five‐membered chelate rings but intermolecular H 2 O→Sn coordination instead.…”