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Ruthenium complexes with ferrocene-based P,C,P pincer ligand

“…Our first attempt, as well as attempts of other researchers, 10 (4) have been synthesized earlier by the reactions of RuCl 2 (PPh 3 ) 3 with the corresponding benzene derivatives. In complexes 3 and 4, the Ru atom is in a square pyramidal coordina tion environment with the PPh 3 ligand in the apical posi tion.…”

“…We succeeded in synthesizing the first ferrocene based ruthenium pincer complex using the RuCl 2 (DMSO) 4 compound as a source of Ru II . 16, 17 The reaction proceeds smoothly in refluxing 2 methoxyethanol in the presence of triethylamine to give the dark green chlorocarbonyl complex RuCl(CO)[ Bu t P,C,P Fe ] (5) (Scheme 2).…”

“…3 The availability of these complexes was ex emplified by the cyclometallation of 1,3 bis[(dialkyl phosphino)methyl]ferrocene 3,4 and bis[(dialkylphos phino)methyl]ruthenocene. 4 Platinum metal com plexes with metallocene based pincer ligands 2-7 proved to be as stable as their benzene analogs.…”

“…3 The availability of these complexes was ex emplified by the cyclometallation of 1,3 bis[(dialkyl phosphino)methyl]ferrocene 3,4 and bis[(dialkylphos phino)methyl]ruthenocene. 4 Platinum metal com plexes with metallocene based pincer ligands 2-7 proved to be as stable as their benzene analogs. Recently, we have demonstrated 8 that the iridium complexes IrH 2 [{2,5 (Bu t 2 PCH 2 ) 2 C 5 H 2 }M(C 5 H 5 )] (M = Fe or Ru) are the most active of all the known homogeneous cata lysts for alkane dehydrogenation.…”

Ruthenium‐to‐Platinum Interactions in η6,η1 NCN‐Pincer Arene Heterobimetallic Complexes: An Experimental and Theoretical Study

“…[15,22] Finally, both types of binding can take place [i.e., one metal center is η 1 -bonded to the bridging ligand, whereas the other is η 5 -or η 6 -bonded (Scheme 1, c)]. [23][24][25][26] We recently discovered [27] a straightforward route to bisorganometallic complexes of the type shown in Scheme 1c, in which the arenophile [Ru(C 5 R 5 )(MeCN) 3 ] + (R = H or Me) [15,28] directly reacts, in dichloromethane and at room temperature, with ECE-pincer platinum and palladium complexes (E = N, S, or P, see Scheme 2, a). The resulting ruthenium-modified pincer complexes show different properties compared to the starting monometallic pincer complexes: the pincer metal is more electron poor, [27] it can have an increased catalytic activity, [29] and in the event that both pincer arms are different it becomes planar-chiral.…”