Synthesis and properties of guanidine-pyridine hybridligands and structural characterisation of their mono- and bis(chelated) cobalt complexes
作者:Alexander Hoffmann、Janna Börner、Ulrich Flörke、Sonja Herres-Pawlis
DOI:10.1016/j.ica.2008.06.002
日期:2009.3
their coordinating properties, the corresponding cobalt(II)chloride complexes have been prepared and completely characterised by means of X-ray structure analysis, UV/Vis spectroscopy and mass spectrometry. The neutral complexes 1,1,3,3-tetramethyl-2-(quinolin-8-yl)guanidine}cobalt(II)-dichloride [Co(TMGqu)Cl 2 ] and N -(1,3-dimethylimidazolidin-2-yliden)pyridin-8-amine}cobalt(II)-dichloride [Co(DMEGpy)Cl
摘要描述了四种胍-吡啶杂配体的合成及其在MeCN中的光谱特征。为了证明它们的配位性质,已经制备了相应的氯化钴(II)配合物,并通过X射线结构分析,UV / Vis光谱和质谱法对其进行了完全表征。中性络合物1,1,3,3-四甲基-2-(喹啉-8-基)胍}二氯化钴(II)[Co(TMGqu)Cl 2]和N-(1,3-二甲基咪唑啉- 2-yylden)pyridin-8-amine}二氯化钴(II)[Co(DMEGpy)Cl 2]显示钴原子的四面体配位,而在双[氯双N-(1,3-二甲基咪唑啉)-2- yliden)quinolin-8-amine}钴(II)]四氯钴酸酯[Co(DMEGqu)2 Cl] 2 [CoCl 4]和chlorobis 1,1,3,3-四甲基-2-((吡啶-2-基)甲基)胍}氯化钴(II)[Co(TMGpy)2 Cl] Cl,钴原子在三角锥体环境中配位。这些三角锥