Synthesis, structures, electrochemistry and properties of dioxo-molybdenum(VI) and -tungsten(VI) complexes with novel asymmetric N2OS, and partially symmetric N2S2, NOS2 N-capped tripodal ligands
作者:Yee-Lok Wong、Andrew R. Cowley、Jonathan R. Dilworth
DOI:10.1016/j.ica.2004.07.008
日期:2004.12
A new class of asymmetric N -capped (dianionic/trianionic) tripodal proligands [H x (L n )] ( x = 2, n = 1–6; x = 3, n = 7, 8) which possess pendant arms with N 2 OS, N 2 S 2 or NOS 2 donor groups and with different chelate ring sizes 5,5,5} or 5,6,5} has been prepared. Treatment of these ligands with [WO 2 Cl 2 (dme)] (dme = 1,2-dimethoxyethane) in the presence of base (triethylamine or KOH) leads
新型的不对称N封端(双阴离子/三向离子)三脚架配体[H x(L n)](x = 2,n = 1-6; x = 3,n = 7,8),其侧臂带有N已经制备了2个OS,N 2 S 2或NOS 2供体基团,并且具有不同的螯合环尺寸5,5,5}或5,6,5}。在碱(三乙胺或KOH)存在下,用[WO 2 Cl 2(dme)](dme = 1,2-二甲氧基乙烷)处理这些配体会导致形成[WO]型顺式-二氧杂钨(VI)复合物。 2(L n)](n = 1-6)和K [WO 2(L n)](n = 7,8)。这些四齿配体与[MoO 2(acac)2](acac =乙酰丙酮酸)反应,得到相应的Mo(VI)类似物[MoO 2(L n)](n = 1-6)和K [MoO 2(L n )](n = 7、8)。而且,使用相似的方法合成了具有NS 2三齿配体[MoO 2(L 9)]的新的五坐标二氧钼(VI)配合物。