Syntheses of rac/meso-{PhP(3-t-Bu-C5H3)2}-Zr{RN(CH2)3NR}, structural analyses of rac-{PhP(3-t-Bu-C5H3)2}Zr{RN(CH2)3NR} (where R is SiMe3 or Ph), and meso to rac isomerization
作者:Jonathan C. Axtell、Susan D. Thai、Laurel A. Morton、William S. Kassel、William G. Dougherty、Deanna L. Zubris
DOI:10.1016/j.jorganchem.2008.09.018
日期:2008.12
ZrRN(CH2)3NR}Cl2(THF)2 (where R = SiMe3 or Ph, respectively) using ethereal solvent. These isomeric pairs were characterized by 1H, 13C1H}, and 31P1H} NMR spectroscopy; rac-3 and rac-4 were also examined via single crystal X-ray crystallography. The structures of rac-3 and rac-4 are notable in the tendency of the cyclopentadienyl rings towards η3 coordination. While isolated samples of rac-3/meso-3 and rac-4/meso-4
的合成外消旋/内消旋- PHP(3-吨-Bu-C 5 H ^ 3)2 } Zr的我3的SiN(CH 2)3 NSiMe 3 }(外消旋-3 /内消旋-3)和外消旋/内消旋- PhP(3- t -Bu-C 5 H 3)2 } Zr PhN(CH 2)3 NPh}(rac -4 / meso -4)通过K 2 [PhP(3- t -Bu- C 5 H 3)2 ]·1.3 THF(2)和Zr RN(CH 2)3 NR} Cl 2(THF)2(其中R = SiMe 3或Ph分别),使用醚溶剂。这些同分异构对通过1 H,13 C 1 H}和31 P 1 H} NMR光谱进行表征。还通过单晶X射线晶体学检查了rac -3和rac -4。的结构外消旋-3和外消旋-4是在环戊二烯基环的朝向η的倾向显着3协调。分离的rac -3 / meso -3和rac -4 / meso -4样品在四氢呋喃-d