Nitrile ligands for controlled synthesis of alkynyl-ruthenium based homo and hetero bimetallic systems

Synthesis and characterization of (CHCH)n-bridged (n=1, 2, 3) heterobimetallic and trimetallic ferrocene–ruthenium complexes

“…The results indicate that the complexes, which contain a conjugated bridge linking metal atoms by r metal-carbon bonds show much stronger electronic communication between metal atoms than the complexes in which a bridge links the metal atoms by a dative bond. This is in good agreement with the conclusion reported by Paul and Lapinte [25] and Fillaut et al [26].…”

A photochromic AgBF 4 complex with cis -1,2-dicyano-1,2-bis(2′,4′,5′-trimethyl-3′-thienyl)ethene: Synthesis, structure and photochromism

“…The shift of C≡N stretch is ca. +19 cm -1 relative to the corresponding band in the free ligand (2218 cm -1 , KBr pellet), confirming a effect from metal complexation [18][19][20][21]. These observations proved the formation of complexes.…”

A simple synthesis of trans-RuCl(CCR)(dppe)2 complexes and representative molecular structures

“…The chemistry of transition metal complexes transRuCl(C"CR)(dppe) 2 is very well established [1][2][3][4][5][6][7][8][9][10], with a considerable body of recent research demonstrating the utility of these moieties in the construction of multimetallic complexes [11][12][13][14][15], optical materials [16][17][18], including those that exhibit pH or redox-switchable NLO response [19][20][21][22][23][24][25], colormetric [26] and fluorescent [27] sensing behaviour, the ''wire-like" behaviour that arises from extensive d-p mixing along the Ru-C"C fragment [28][29][30][31][32][33][34][35][36][37], and other characteristics that make these compounds potentially useful molecular electronic components [5,33,34,[38][39][40][41]. The facile replacement of the chloride ligand in complexes trans-RuCl(C"CR)(dppe) 2 either directly or from related vinylidenes with a second alkynyl ligand is well documented …”

“…The use of isolated [RuCl(dppe) 2 ] + ([2] + ) salts as an entry to acetylide complexes trans-RuCl(C"CR)(dppe) 2 and related compounds has recently begun to attract attention [12,14,27,34,35,57,58]. In this contribution, we detail a convenient preparation of acetylide complexes 3 from trans-1 that takes advantage of the ready abstraction of a chloride ligand from trans-1 by AgOTf in dichloromethane to give the key reagent [2]OTf.…”