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., category: ruthenium-catalysts
Reactions of cyano(alkynyl)ethenes with some alkynyl- and diynyl-ruthenium complexes
Reactions of Ru(C{triple bond, long}CPh)(PPh3)2Cp with (NC)2C{double bond, long}CR1R2 (R1 = H, R2 = C{triple bond, long}CSiPri3 8; R1 = R2 = C{triple bond, long}CPh 9) have given eta3-butadienyl complexes Ru{eta3-C[{double bond, long}C(CN)2]CPh{double bond, long}CR1R2}(PPh3)Cp (11, 12), respectively, by formal [2 + 2]-cycloaddition of the alkynyl and alkene, followed by ring-opening of the resulting cyclobutenyl (not detected) and displacement of a PPh3 ligand. Deprotection (tbaf) of 11 and subsequent reactions with RuCl(dppe)Cp and AuCl(PPh3) afforded binuclear derivatives Ru{eta3-C[{double bond, long}C(CN)2]CPh{double bond, long}CHC{triple bond, long}C[MLn]}(PPh3)Cp [MLn = Ru(dppe)Cp 19, Au(PPh3) 20]. Reactions between 8 and Ru(C{triple bond, long}CC{triple bond, long}CR)(PP)Cp [PP = (PPh3)2, R = Ph, SiMe3, SiPri3; PP = dppe, R = Ph] gave eta1-dienynyl complexes Ru{C{triple bond, long}CC[{double bond, long}C(CN)2]CR{double bond, long}CH[C{triple bond, long}C(SiPri3)]}(PP)Cp (15-18), respectively, in reactions not involving phosphine ligand displacement. The phthalodinitrile C6H(C{triple bond, long}CSiMe3)(CN)2(NH2)(SiMe3) 10 was obtained serendipitously from (Me3SiC{triple bond, long}C)2CO and CH2(CN)2, as shown by an XRD structure determination. The XRD structures of precursor 7 and adducts 11, 12 and 17 are also reported.
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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI