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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Synthesis and structural characterization of 1,4-diazadiene imido tungsten complexes
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Synthesis and structural characterization of 1,4-diazadiene imido tungsten complexes

机译:1,4-二氮杂二烯亚氨基钨配合物的合成与结构表征

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The reaction of [W(NR)Cl-4(L)] (R = Ph, Cy; L = thf) and Li(2)DAD (DAD = 1,4-di-tert-butyl-1,4-diazabuta-1,3-diene) leads to the formation of [(DAD)W(NR)Cl,], R = Ph (1), R = Cy (2). Both complexes are examples of a growing class of complexes displaying an uncommon combination of two highly charged sterically demanding 6-electron donors, NR2- and DAD(2-), at one coordination site. Surprisingly both complexes show weak Lewis acidity and don't react with sigma-donors such as PMe3 and THE The crystal structure determination of I reveals a mononuclear molecular structure with folded DAD2- moiety In accord with spectroscopic data and the W-N, C-N and C-C bond lengths of the DAD ligand. the obtained compounds should be described as W-VI imido ene-diamido species.
机译:[W(NR)Cl-4(L)](R = Ph,Cy; L = thf)与Li(2)DAD(DAD = 1,4-二叔丁基-1,4-重氮杂丁)的反应-1,3-二烯)形成[(DAD)W(NR)Cl,],R = Ph(1),R = Cy(2)。两种配合物都是一类日益增长的配合物的例子,在一个配位点上显示了两个高电荷空间需求的6电子供体NR2-和DAD(2-)的罕见组合。出乎意料的是,两种配合物均显示弱的路易斯酸度,并且不与σ供体如PMe3和THE发生反应。I的晶体结构测定表明,具有折叠的DAD2-部分的单核分子结构符合光谱数据,并具有WN,CN和CC键DAD配体的长度。所得化合物应被描述为W-VI亚氨基烯-二氨基物种。

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