Complexes with 6-amino-5-nitroso-2-thiouracil and violuric acid derivatives containing the fac-ReI(CO)3 core: Synthesis, XRD structural and photoluminescence characterization
作者:Nuria A. Illán-Cabeza、Antonio R. García-García、Miguel N. Moreno-Carretero
DOI:10.1016/j.ica.2010.11.009
日期:2011.1
the nitrogen atom of the nitroso group and an adjacent carbonylic oxygen, making a five-membered chelate ring. The coordination sphere is completed with three carbonyl groups in fac -arrangement and one chlorine atom (DANTU complex) or water molecule (VIO complexes). The higher acidity of violuric acids, if compared with DANTU one, may explain both synergic deprotonation and chloride substitution in
摘要6-氨基-1,3-二甲基-5-亚硝基-2-硫氧嘧啶(DANTU)和紫尿酸(VIO)及其单-(MVIO)和二甲基(DVIO)衍生物的fac-三羰基hen(I)配合物已经准备好了。通过元素分析,IR,1 H和13 C NMR光谱方法以及发光光谱对复合物进行了表征。[ReCl(CO)3(DANTU)],[Re(H 2 O)(CO)3(VIOH -1)]和[Re(H 2 O)(CO)3(DVIOH -1)]络合物的结构由单晶X射线衍射实验解决。Re(I)周围的配位环境可描述为扭曲的八面体,其中配体通过亚硝基的氮原子和相邻的羰基氧以双齿形式起作用,从而形成五元螯合环。配位球以fac排列的三个羰基和一个氯原子(DANTU配合物)或水分子(VIO配合物)完成。如果与DANTU 1相比,更高的酸度可以解释[ReCl(CO)3] +部分中的协同去质子化和氯化物取代,从而形成Re-violurato络合物。