作者:Sukesh Shekar、Seth N. Brown
DOI:10.1039/c3dt53496k
日期:——
dimolybdenum mono-oxo complex (tBuClip)Mo(μ-3,5-tBu2Cat)2Mo(O)(3,5-tBu2Cat). This complex, which contains a seven-coordinate bis(amidophenoxide)molybdenum center and a six-coordinate oxomolybdenum center, represents a structural hybrid between dimeric oxomolybdenumbis(catecholate) and molybdenum tris(catecholate) complexes. Both mono- and dimolybdenum complexes are best formulated as containing Mo(VI), but there
的二氧合钼(VI)络合物(吨BuClipH 2)的MoO 2(吨BuClipH 4 = 4,4'-二-叔丁基- Ñ,Ñ ' -双(3,5-二-叔丁基-2-羟基苯基) -2,2'-二氨基联苯)与3,5-二叔丁基邻苯二酚反应形成无氧(t BuClip)Mo(3,5- t Bu 2 Cat)。双(酰氨基苯酚)-单儿茶酚酸酯复合物是单体,并显示出顺式固态的-β几何形状。可变温度NMR数据与两个通量过程一致,一个在低温下相互转化几种几何异构体,第二个在环境温度下互换t BuClip配体的末端。高温助熔过程可以通过单一的Bailar三角扭曲和手性二氨基联芳基骨架的阻转异构化来解释。向(t BuClipH 2)MoO 2中添加过量的邻苯二酚会形成二钼一氧代络合物(t BuClip)Mo(μ-3,5- t Bu 2 Cat)2 Mo(O)(3,5- t卜2猫)。该配合物包含一个七坐标的双(氨基苯甲酰氧基)