Electric Literature of 32993-05-8, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 32993-05-8, C41H35ClP2Ru. A document type is Article, introducing its new discovery.
The 31P NMR spectra of CpRu(PR3)2Cl and Cp?Ru(PR3)2Cl complexes with PR3 = PMe3, PPhMe2, PPh2Me, PPh3, PEt3, PnBu3 have been measured; these data correlate with and can be used to predict Ru-P bond distances and enthalpies. Their 31P NMR coordination chemical shifts (delta(ppm) = deltacomplex – deltafree) show significant linear correlations with literature values of both the enthalpies of the ligand exchange reactions to form the Ru-P bonds and the average Ru-P bond distances from crystal structures. The strong correlation between Delta (ppm) and Ru-P distance can be extended to include the first-generation Grubbs metathesis catalyst (PCy3)2Cl2Ru=C(H)Ph and four of its derivatives, (PCy3)2Cl2Ru=C(H)(p-C6H4X) (X = OCH3, CH3, Cl, Br), the four related Fischer carbenes (PCy3)2Cl2Ru=C(H)ER (ER = OEt, SPh, N(carbazole), N(pyrrolidinone)), the second-generation Grubbs catalyst (PCy3)(IMes)Cl2Ru=C(H)Ph, and its derivative (PCy3)(IMes)Cl2Ru=C(H)OEt. Other significant correlations in the Cp?Ru(PR3)2Cl complexes are found between the enthalpies of reaction and Ru-P bond distances and between the cone angle and the Ru-P enthalpy, Ru-P bond distance, and Delta(ppm) values. The 31P NMR shifts for six phosphines correlate nearly linearly with their crystallographic cone angles, allowing prediction of cone angles from 31P NMR data.
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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI