2008
DOI: 10.1021/om800021c
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A Weak Donor, Planar Chelating Bitriazole N-Heterocyclic Carbene Ligand for Ruthenium(II), Palladium(II), and Rhodium

Abstract: The new ligand bitriazole-2-ylidene (bitz) has been successfully coordinated to Ru(II), Pd(II), Rh(I), Rh(II), and Rh(III), showing its wide chemical versatility. Reaction of the bitz ligand precursor salt, 1,1′-methyl-4,4′-bi-1,2,4-triazolium diiodide, with [RhCl(cod)]2 under mild conditions afforded chelate and bis-chelate Rh(III) complexes, as well as an unexpected metal−metal bounded di-Rh(II) species. The reaction of the precursor salt of bitz with [(η6-p-cymene)RuCl2]2 and NaOAc afforded a mixture of che… Show more

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Cited by 98 publications
(76 citation statements)
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“…In this dinuclear complex, at 2.4545(13) and 2.4489(12) Å, the Ru-Cl distances are comparable to those found in other chloro-bridged complexes involving ruthenium centers [34,35]. Similarly, the metalemetal distance [4.0679(6) Å] lies in the typical range for single chlorobridged dinuclear arene ruthenium complexes [36,37].…”
Section: Resultssupporting
confidence: 76%
“…In this dinuclear complex, at 2.4545(13) and 2.4489(12) Å, the Ru-Cl distances are comparable to those found in other chloro-bridged complexes involving ruthenium centers [34,35]. Similarly, the metalemetal distance [4.0679(6) Å] lies in the typical range for single chlorobridged dinuclear arene ruthenium complexes [36,37].…”
Section: Resultssupporting
confidence: 76%
“…Organometallic systems bearing N-heterocyclic carbene (NHC) ligands are useful catalysts for functional-group transformations and polymerization reactions, [3][4][5][6][7][8][9][10][11][12][13] and complexes featuring multitopic NHCs have recently emerged [14] as promising candidates for asymmetric and tandem catalysis, [15][16][17] as well as other applications. [18,19] Variants featuring two NHC moieties linked by a p-conjugated system, such as benzobis(imidazolylidene) (BBI), [20,21] triazolyldiylidene (A), [22] bitriazolylidene (B), [23] pyridylbis-A C H T U N G T R E N N U N G (imidazolylidene) (C), [24][25][26] and pyridazinylbis(imidazolyl-A C H T U N G T R E N N U N G idene) (D) [27,28] have found numerous uses as ditopic ligands (Scheme 1). For example, BBIs have yielded phosphorescent complexes, [29] polymeric catalysts, [30] emissive and conducting polymers, [21,[31][32][33] and self-assembled materials.…”
Section: Introductionmentioning
confidence: 99%
“…Perіs et al 207,208 proposed using bіstriazolylіdene lіgands for the synthesis of precursors to 43C, prior to the generation of metal complexes. However, carbenes of this type have not yet been prepared.…”
Section: 206mentioning
confidence: 99%