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.
Treatment of [PdCl2(PhCN)2] with 1 equivalent of 2,3-bis(diphenylphosphino)propene (2,3-dpppn) in CH2Cl2 gave [PdCl2(2,3-dpppn)] 1 together with some [PdCl2(1,2-dpppn)] 2 [1,2-dpppn = cis-1,2-bis(diphenylphosphino)propene]. Treatment of 1 with an excess of benzylamine did not lead to addition to the double bond, but resulted in complete isomerisation to 2, as monitored by 31P-{1H} and 1H NMR spectroscopy. Metathesis of 2 with NaI in acetone gave [PdI2(1,2-dpppn)] 3. Platinum(II) complexes [PtCl2(2,3-dpppn)] 4 and [PtCl2(1,2-dpppn)] 5 were prepared and characterised analogously. Treatment of 2 or 5 with an excess of MeLi gave [PdMe2(1,2-dpppn)] 6 and [PtMe2(1,2-dpppn)] 7 respectively, and treatment of 5 with hydrazine hydrate and an excess of HC?CPh in ethanol gave [Pt(C?CPh)2(1,2-dpppn)] 8. Treatment of [PdCl2(PhCN)2] with 2 equivalents of AgBF4 and 2 equivalents of 2,3-dpppn gave a mixture of at least four isomeric complexes, probably cis- and trans-[Pd(2,3-dpppn)2][BF4]2 and cis- and trans-[Pd(1,2-dpppn)2][BF4]2. On treatment with benzylamine, this mixture was converted into a ca. 1:1 mixture of two isomers, which NMR spectroscopic evidence suggested were cis- and trans-[Pd(1,2-dpppn)2][BF4]2 9. Similarly, treatment of [Pt(Cl2(PhCN)2] with AgBF4-2,3-dpppn gave cis- and trans-[Pt(1,2-dpppn)2][BF4]2 10. A crystal structure determination was performed on the trans isomer, isolated on recrystallisation of the mixture from MeCN-Et2O. Treatment of [RuCl2(PPh3)3] with 2 equivalents of 2,3-dpppn gave a very insoluble complex, trans-[RuCl2(dpppn)2] 11. Treatment of [RuCl(eta5-C5H5)(PPh3) 2] with 2,3-dpppn in refluxing benzene gave [RuCl(eta5-C5H5)(1,2-dpppn)] 12. The formulation of 12 was confirmed by a single-crystal structure determination.
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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI