Synthesis, Molecular Structure, and Solution Stereochemistry of Hypercoordinated Bis(3-(dimethylamino)propyl)tin Compounds. Dissociative (Nonregular) and Nondissociative (Regular) Isomerization Pathways
作者:Klaus Jurkschat、Nicole Pieper、Stefan Seemeyer、Markus Schürmann、Monique Biesemans、Ingrid Verbruggen、Rudolph Willem
DOI:10.1021/om000813w
日期:2001.3.1
compounds to have similar structures in solution. The coalescence phenomena observed in the 1H and 13C NMR spectra are explained both in terms of Sn−O bond cleavage (1−4) and chirality inversion through a sequence of five intramolecular Berry-type pseudorotations (1−4, 8), interconverting the enantiomers with propeller-like geometry. The dynamic behavior in solution of the stannaindane derivatives 5 and
[Me 2 N(CH 2)3 ] 2 Sn(EAr)2的合成(1,E = O,Ar = C 6 H 5 ; 2,E = O,Ar = p- t- BuC 6 H 4 ; 3,E = O,Ar = p-NO 2 C 6 H 4;4,E = O,Ar = o-FC 6 H 4;7,E = S,Ar = C 6 H 5),[Me 2 N (CH 2)3 ] 2SN(ø -O 2 C ^ 6 ħ 3 R-3)(5,R = H; 6,R = OCH 3)和[我2 N(CH 2)3 ] 2 SnPh} +我- (8)被报道。X射线衍射分析表明为化合物中的锡原子扭曲八面体几何形状的1 - 7用,除了stannaindane衍生物5,在相互的碳原子的反式的位置,而氮和氧原子是顺式。在化合物5中碳原子为顺式,氮原子为反式。相反,化合物8是离子的,并且由分子内五配位的三有机锡阳离子和碘化物阴离子组成。可变温度1