Low‐Valent Titanium–Pentafulvene Complexes — Formation of Dinuclear Titanium–Nitrogen Complexes
作者:Axel Scherer、Kay Kollak、Arne Lützen、Marion Friedemann、Detlev Haase、Wolfgang Saak、Rüdiger Beckhaus
DOI:10.1002/ejic.200400938
日期:2005.3
[(η5-C5Me5)Ti(η6-C9H6=C(p-tol)2)] (10) is obtained by using the more sterically demanding benzofulvene C9H6=C(p-tol)2 (5) instead of 2–4. The solid-state structures of the dinitrogen compounds reveal weakly activated end-on bound N2 ligands with identical N–N distances of 1.160(3) Å (6) and 1.160(5) Å (8). The dinitrogen complexes 6, 7 and 8 show diamagnetic behaviour, which allowed a complete NMR spectroscopic characterization
钠汞齐还原的[(η 5 -C 5我5)的TiCl 3 ](1)在pentafulvenes的存在C 5 ħ 4 = CR 2,R:p -tol(2),p -FPh(3) ,CR 2:金刚烷基(4)}在氮气下顺利产生暗绿色或深蓝色的双核低价钛配合物[(η 5 -C 5我5)的Ti(η 6 -C 5 H ^ 4 = CR 2)} 2(μ2,η 1,η 1 -N 2)] R:p -tol(6),p -FPh(7),CR 2:金刚烷基(8)},其特征在于通过桥接端上协调二氮配体,在高产。以相同的方式,自由氮,低配位的络合物[(η 5 -C 5我5)的Ti(η 6 -C 9 ħ 6 = C(p -tol)2)](10)通过使用所获得在空间上要求更高的苯并富勒烯C 9 H 6 = C(p -tol)2(5),而不是2 - 4。二氮化合物的固态结构显示出弱活化的末端键合的N 2配体,其N–N距离相同,分别为1