Six new oxo-centered triruthenium complexes with NCS − or NO 2 − as a terminal ligand [Ru 3 O(CH 3 CO 2 ) 6 (NCS)(L) 2 ] L = 4-dimethylaminopyridine (dmap) ( 1 ); L = pyridine (py) ( 2 )}, [PPh 4 ] 2 [Ru 3 O(CH 3 CO 2 ) 6 (NCS) 3 ] ( 3 ), [PPh 4 ] 2 [Ru 3 O(CH 3 CO 2 ) 6 (CO)(NCS) 2 ] ( 4 ), and [Ru 3 O(CH 3 CO 2 ) 6 (NO 2 )(L) 2 ] L = dmap ( 5 ); L = py ( 6 )} were prepared. The thiocyanate is coordinated
摘要六种新的以
NCS-或NO 2-为末端
配体的以氧为中心的三
钌络合物[Ru 3 O(CH 3 CO 2)6(
NCS)(L)2] L = 4-二甲基
氨基吡啶(dmap)(1) ; L =
吡啶(py)(2)},[PPh 4] 2 [Ru 3 O(CH 3 CO 2)6(
NCS)3](3),[PPh 4] 2 [Ru 3 O(CH 3 CO 2) )6(CO)(
NCS)2](4),和[Ru 3 O(CH 3 CO 2)6(NO 2)(L)2] L = dmap(5); 准备L = py(6)}。对于所有
NCS-配合物,
硫氰酸盐均通过N原子配位。尽管获得的dmap配合物5为具有N坐标
亚硝酸盐的单一异构体,但获得的py配合物6为涉及
亚硝酸盐配位模式的两种异构体的混合物。连接异构化太快以至于不能分离这些异构体,并且通过1 H NMR上的饱和转移技术进行了证实。这些化合物表现出可逆的氧化还原行为,并