Simmons Mimi, Cummings Premack Kayla, Guerra E Danae, Bohle Maeve J, Rosadiuk Kristopher A, Bohle D Scott
Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal H3A 0B8, Canada.
Inorg Chem. 2021 Jul 5;60(13):9621-9630. doi: 10.1021/acs.inorgchem.1c00844. Epub 2021 Jun 23.
Soluble nitrosoguanidine- and -methylnitrosoguanidine-based metallotriazole complexes of ruthenium(II) monocarbonyls have been prepared and characterized. Both nitrosoguanidines prove to be strong chelates with the formally π-accepting nitroso nitrogen binding to carbon monoxide and a π-donating amide to the CO. The resulting ensemble consists of ruthenium examples of 1-metallo-2,3,5-triazoles. The ruthenium coordination sphere is completed by anions, either H, Cl, or Ph, to the nitroso group as well as two mutually PPh groups. The π-donating amide group is formally sp hybridized with a planar nitrogen to give a strongly bound five-membered chelating anion. Together, these results illustrate the remarkable potential for the nitrosoguanidinates as a family of new metal chelates.
已制备并表征了基于可溶性亚硝基胍和甲基亚硝基胍的钌（II）单羰基金属三唑配合物。事实证明，这两种亚硝基胍都是强螯合剂，其中形式上具有π-接受性的亚硝基氮与一氧化碳结合，而具有π-供体性质的酰胺与一氧化碳结合。所得的组合包含1-金属-2,3,5-三唑的钌实例。钌的配位球由与亚硝基基团结合的阴离子（H、Cl或Ph）以及两个相互的PPh基团完成。具有π-供体性质的酰胺基团在形式上是sp杂化的，氮原子呈平面状，形成一个紧密结合的五元螯合阴离子。总之，这些结果说明了亚硝基胍盐作为一类新型金属螯合物具有显著的潜力。
