Electric Literature of 92361-49-4, 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. 92361-49-4, C46H45ClP2Ru. A document type is Article, introducing its new discovery.
Syntheses, structures, and spectro-electrochemistry of {Cp*(PP)Ru}C?CC?C{Ru(PP)Cp*} (PP = dppm, dppe) and their mono- and dications
The complexes {Cp*(PP)Ru}2(mu-C?CC?C) (PP = dppm 5a, dppe 5b) have been synthesized from RuCl(PP)Cp* (1a/b) via the corresponding vinylidenes [Ru(=C=CH2)(PP)Cp*]+ (2a/b), deprotonation (KOBut) to the ethynyls Ru(C?CH)(PP)Cp* (3a/b), oxidative coupling ([FeCp 2][PF6]) to the bis(vinylidenes) [{Ru(PP)Cp*} 2{mu-(=C=CHCH=C=)}]2+ (4a/b), and deprotonation [dbu (4a), KOBut (4b)]. Electrochemistry of 5a/b revealed the expected sequence of four le redox steps, which occurred at significantly lower E values than found for the Ru(PPh3)2Cp analogue. Single-crystal X-ray structure determinations are reported for 1a/b, 2a/b, 3a/b, 4a/b, and 5a/b, together with the oxidized products [5b][PF6] n (n = 1, 2). In the monocation [5b][PF6] the Ru-C(1) [1.931(2) A] and C-C distances [1.248-1.338(3) A] are intermediate between those found in 5b and the dication [5b]2+. The short Ru-C [1.857(5) A] and experimentally equal C-C distances [1.269-1.280(6) A] in [5b] [PF6]2 confirm the anticipated dicarbene-cumulene structure for the Ru=C=C=C=C=Ru bridge.
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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI