Joshi Prakash Chandra, Shukla Pratima, Singh Vishal, Singh Vivek Kumar, Garg Aditi, Gaur Harshita, Mahawar Pritam, Kumar Hemant, Nagendran Selvarajan
Indian Institute of Technology Delhi (IIT Delhi), Hauz Khas, New Delhi, India.
Chemistry. 2025 May 19;31(28):e202500214. doi: 10.1002/chem.202500214. Epub 2025 Apr 28.
The first examples of air and water stable bis(germylenes) 5-9 and bis(germacarbonyl) compounds 10-12 are reported. Bis(germylene monochloride) 5 is isolated by starting from bis(dipyrromethene) 4, which in turn has been synthesized by oxidizing bis(dipyrromethane) 3 using DDQ. Terephthaldehyde 1 and mesityl pyrrole 2 were the precursors for compound 3. Bis(germylene monochloride) 5 reacts with alcohols and phenol in the presence of a mild base (Cs₂CO₃) to afford bis(germylene alkoxides) 6-7 and bis(germylene phenoxide) 8, respectively. Compound 5's reaction with sodium pyrrolide has resulted in bis(germylene pyrrolide) 9. Further, compounds 7 and 9 react with elemental sulfur and selenium under ambient conditions, resulting in bis(germacarbonyl) compounds 10-12. The UV-Vis spectroscopic investigations on compounds 4-12 are done experimentally and computationally.
报道了空气和水稳定的双（亚锗烯）5 - 9和双（锗羰基）化合物10 - 12的首例。双（一氯化亚锗烯）5是从双（二吡咯亚甲基）4开始分离得到的，而双（二吡咯亚甲基）4又是通过使用DDQ氧化双（二吡咯甲烷）3合成的。对苯二甲醛1和均三甲苯基吡咯2是化合物3的前体。双（一氯化亚锗烯）5在温和碱（碳酸铯）存在下与醇类和苯酚反应，分别得到双（亚锗烯醇盐）6 - 7和双（亚锗烯酚盐）8。化合物5与吡咯化钠反应生成双（亚锗烯吡咯盐）9。此外，化合物7和9在环境条件下与元素硫和硒反应，生成双（锗羰基）化合物10 - 12。对化合物4 - 12进行了紫外 - 可见光谱实验研究和计算研究。
