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Amide-Functionalized Chalcogen-Bridged Flexible Tetranuclear Rhenacycles: Synthesis, Characterization, Solvent Effect on the Structure, and Guest Binding
ACS Omega ( IF 3.7 ) Pub Date : 2018-03-19 00:00:00 , DOI: 10.1021/acsomega.7b02075 Muthuraman Karthikeyan 1 , Buthanapalli Ramakrishna 1 , Sivalingam Vellaiyadevan 1 , Dhanaraj Divya 1 , Bala. Manimaran 1
ACS Omega ( IF 3.7 ) Pub Date : 2018-03-19 00:00:00 , DOI: 10.1021/acsomega.7b02075 Muthuraman Karthikeyan 1 , Buthanapalli Ramakrishna 1 , Sivalingam Vellaiyadevan 1 , Dhanaraj Divya 1 , Bala. Manimaran 1
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The synthesis of flexible rhenium(I)-based amide-functionalized chalcogen-bridged tetranuclear metallacycles of general formula [{(CO)3Re(μ-ER)2Re(CO)3}2(μ-L)2] (1–8) was achieved by treating rhenium carbonyl with dialkyl/diaryl chalcogenide (RE–ER; E = S and Se) in the presence of ditopic flexible or semiflexible pyridyl ligand with amide functionality (L = N,N′-bis(4-pyridylcarboxamide)-1,2-ethane (bpce) and N,N′-bis(4-(4-pyridylcarboxamide)phenyl)methane (bpcpm)). Compounds 1–8 were formed by multicomponent self-assembly under one-pot reaction conditions via oxidative addition of dialkyl/diaryl chalcogenide to rhenium carbonyl with pyridyl ligands. The resultant metallacyclophanes were characterized using elemental analyses, infrared, ultraviolet–visible, and NMR spectroscopic techniques. Metallacyclophanes 1–3 and 7 were structurally characterized by single-crystal X-ray diffraction methods. The solvent-induced structural change of flexible tetranuclear metallacyclophane 2 was demonstrated by crystallizing 2 in dichloroethane and dimethylformamide. Molecular recognition capabilities of 2 and 7 were studied with few aromatic compounds containing ethereal linkages.
中文翻译：
酰胺官能化硫族桥连的柔性四核Rhenacycles：合成，表征，溶剂对结构的影响和来宾绑定。
通式[{（CO）3 Re（μ-ER）2 Re（CO）3 } 2（μ-L）2 ]（1）的柔性rh基酰胺基硫族桥联四环金属环的合成（1 -8），通过处理羰基铼与二烷基/二芳基硫属化物（RE-ER实现;在双中心柔性的或半柔性的吡啶基配体的存在下与酰胺官能（L = E = S和Se）ñ，ñ双（4-吡啶基甲酰胺）-1，2-乙烷（bpce）和N，N′-双（4-（4-吡啶基甲酰胺）苯基）甲烷（bpcpm））。化合物1–8通过在锅法反应条件下通过二烷基/二芳基硫属元素化物与吡啶基配体的氧化羰基氧化加成到羰基rh上，通过多组分自组装形成二价。使用元素分析，红外，紫外可见和NMR光谱技术对所得的金属环烷进行表征。通过单晶X射线衍射方法对金属环烷1-3和7进行了结构表征。通过在二氯乙烷和二甲基甲酰胺中结晶2来证明溶剂诱导的柔性四核金属环烷2的结构变化。2和7的分子识别能力 用很少的含有醚键的芳族化合物进行了研究。
更新日期：2018-03-19
中文翻译：
酰胺官能化硫族桥连的柔性四核Rhenacycles：合成，表征，溶剂对结构的影响和来宾绑定。
通式[{（CO）3 Re（μ-ER）2 Re（CO）3 } 2（μ-L）2 ]（1）的柔性rh基酰胺基硫族桥联四环金属环的合成（1 -8），通过处理羰基铼与二烷基/二芳基硫属化物（RE-ER实现;在双中心柔性的或半柔性的吡啶基配体的存在下与酰胺官能（L = E = S和Se）ñ，ñ双（4-吡啶基甲酰胺）-1，2-乙烷（bpce）和N，N′-双（4-（4-吡啶基甲酰胺）苯基）甲烷（bpcpm））。化合物1–8通过在锅法反应条件下通过二烷基/二芳基硫属元素化物与吡啶基配体的氧化羰基氧化加成到羰基rh上，通过多组分自组装形成二价。使用元素分析，红外，紫外可见和NMR光谱技术对所得的金属环烷进行表征。通过单晶X射线衍射方法对金属环烷1-3和7进行了结构表征。通过在二氯乙烷和二甲基甲酰胺中结晶2来证明溶剂诱导的柔性四核金属环烷2的结构变化。2和7的分子识别能力 用很少的含有醚键的芳族化合物进行了研究。
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