Complexes of Click-Derived Bistriazolylpyridines: Remarkable Electronic Influence of Remote Substituents on Thermodynamic Stability as well as Electronic and Magnetic Properties
作者:Marc Ostermeier、Marie-Anne Berlin、Robert M. Meudtner、Serhiy Demeshko、Franc Meyer、Christian Limberg、Stefan Hecht
DOI:10.1002/chem.201000721
日期:2010.9.3
of 1:1 stoichiometry, that is, [Ru(btp)Cl2(dmso)] and [Zn(btp)Br2], could be isolated and were crystallographically characterized: they display octahedral and trigonal‐bipyramidal coordination geometries, respectively, and exhibit high aggregation tendencies due to efficient π–π stacking leading to low solubilities. Metal–btp complexes of 1:2 stoichiometry, that is, [Fe(btp)2]2+ and [Ru(btp)2]2+, could
2,6-双(1,2,3-三唑-4-基)吡啶(btp)配体,其取代方式从强供电子基团到强电子接受基团不等,可通过Cu催化1,3轻松制备研究了偶极环加成(“喀哒”反应)的络合行为,并比较了所得过渡金属化合物的性质。可以分离出化学计量比为1:1的金属-btp络合物,即[Ru(btp)Cl 2(dmso)]和[Zn(btp)Br 2 ],并进行晶体学表征:它们显示八面体和三角-双锥体配位由于有效的π-π堆积导致较低的溶解度,因此它们分别具有较高的聚集趋势。化学计量比为1:2的金属-btp络合物,即[Fe(btp)2 ] 2+和[Ru(btp)2 ] 2+,也可以合成,并且它们的金属中心显示出预期的八面体配位球。铁化合物在固态下表现出非常复杂的磁行为,包括在室温附近发生自旋交叉,并且在btp配体上的取代基上,磁滞和在400 K回火时会锁定为高自旋状态。的[Ru(BTP)的循环伏安法研究2 ] 2+揭示超过0