Unexpected Formation of a Weak Metal−Metal Bond:  Synthesis, Electronic Properties, and Second-Order NLO Responses of Push−Pull Late−Early Heteronuclear Bimetallic Complexes with W(CO)3(1,10-phenanthroline) Acting as a Donor Ligand

2003 ◽  
Vol 22 (20) ◽  
pp. 4001-4011 ◽  
Author(s):  
Maddalena Pizzotti ◽  
Renato Ugo ◽  
Claudia Dragonetti ◽  
Elisabetta Annoni ◽  
Francesco Demartin ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Second Order ◽  
Bimetallic Complexes ◽  
Unexpected Formation ◽  
Donor Ligand ◽  
Metal Bond ◽  
Metal Metal

Dicarbonylcyclopentadienyliridium, (η-C5H5)Ir(CO)2, as a ligand

1999 ◽  
Vol 77 (8) ◽  
pp. 1327-1335 ◽  
Author(s):  
Faming Jiang ◽  
Kumar Biradha ◽  
Weng Kee Leong ◽  
Roland K Pomeroy ◽  
Michael J Zaworotko
Keyword(s):  
Crystal Structures ◽  
Time Scale ◽  
Room Temperature ◽  
Donor Ligand ◽  
Carbonyl Ligands ◽  
Metal Bond ◽  
Metal Metal

The following complexes, in which CpIr(CO)2 acts as a 2e donor ligand, have been prepared: Cp(OC)2IrW(CO)5 (1), Cp(OC)2IrRu(CO)3(SiCl3)2, Cp(OC)2IrOs(CO)3(GeCl3)(Cl) (2), Cp(OC)2IrOs(CO)3(X)2 (X = Cl, Br (3), I). The characterization of the complexes included the crystal structures of 1, 2, and 3, which reveal that all contain an unbridged metal-metal bond. The carbonyl ligands of 1 in solution undergo exchange on the NMR time scale above -40°C. With the exception of 2, all the complexes dissociate in solution at room temperature, some rapidly so. Only in the case of 3 is an equilibrium with the dissociation products established. The results indicate that CpIr(CO)2 is a weak ligand.Key words: tungsten, osmium, iridium, binuclear.

scholarly journals Structural, spectroscopic and electronic properties of a family of face-shared bi-octahedral Ru25+/6+ complexes with a bridging 2,5-di(2-pyridyl)pyrrolide ligand

2020 ◽  
Vol 49 (21) ◽  
pp. 7053-7059
Author(s):  
Shi-Rui Kang ◽  
Zi-Qin Zhou ◽  
Chang-Feng Xiong ◽  
Bin Liu ◽  
John E. McGrady ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Metal Bond ◽  
Metal Metal ◽  
Nitrogen Donor ◽  
New Type

Herein, we found that nitrogen donor dpp−ligand is flexible and provides a platform for aggregation of Ru2+ and/or Ru3+ to give a new type of face-sharing bi-octahedra Ru25+ and Ru26+ dimer featuring of distinct metal–metal bond bond between two ruthenium centres.

2-Mercapto-orotic acid as a bridging chelate in a Re(III)Re(IV) dimer with a metal-metal bond

2016 ◽  
Vol 67 ◽  
pp. 64-66
Author(s):  
J. Mukiza ◽  
T.I.A. Gerber ◽  
E. Hosten
Keyword(s):  
Orotic Acid ◽  
Metal Bond ◽  
Metal Metal

Ultrafast studies of metal-metal bond cleavage in Fe3(CO)12 in solution

1995 ◽  
Vol 229 (1-2) ◽  
pp. 469-471 ◽  
Author(s):  
N.J. Tro ◽  
J.C. King ◽  
C.B. Harris
Keyword(s):  
Bond Cleavage ◽  
Metal Bond ◽  
Metal Metal

The chemistry of stabilized clusters

1982 ◽  
Vol 308 (1501) ◽  
pp. 27-34 ◽  
Keyword(s):  
Electron Donor ◽  
Organic Molecules ◽  
Metal Cluster ◽  
Organic Substrates ◽  
Insertion Reactions ◽  
Donor Ligand ◽  
Small Organic Molecules ◽  
Wide Range ◽  
Metal Metal ◽  
High Yields

Studies of the chemistry of metal cluster complexes and, in particular, their reactions with small organic molecules, have been confined to relatively few systems. Among the reasons for this are: (i) not many clusters are easily synthesized in high yields; (ii) their reactions often give a multitude of products that are difficult to separate and characterize; (iii) the conditions required to bring about reactions often lead to fragmentation of the cluster into lower nuclearity (often mononuclear) species. One cluster whose chemistry has been extensively studied is [Os 3 H 2 (CO) 10 ]. This can be synthesized in high yields from [Os 3 (CO) 12 ] + H 2 (Knox et al. 1975) and reacts readily under mild conditions with a wide range of electron-donor molecules by virtue of its coordinative unsaturation (Shapley et al. 1975; Deeming & Hasso 1976; Adams & Golembeski 1979). Formally, one may consider that a metal—metal double bond is present, which is reduced to a single bond on coordination of an additional two-electron donor ligand such as an organophosphine. The presence of metal—hydrogen bonds in this cluster and the cluster’s ability to coordinate organic substrates enable it to undergo a wide variety of insertion reactions, leading to products that may be regarded as intermediates in the reduction of organic molecules by clusters (Deeming & Hasso 1975; Keister & Shapley 1975).

Does cyclopentadienyl iron dicarbonyl dimer have a metal–metal bond? Who’s asking?

2015 ◽  
Vol 424 ◽  
pp. 14-19 ◽  
Author(s):  
Jay A. Labinger
Keyword(s):  
Metal Bond ◽  
Metal Metal

Can a Metal-Metal Bond Hop in the Fullerene Cage?

2011 ◽  
Vol 17 (37) ◽  
pp. 10230-10234 ◽  
Author(s):  
Tao Yang ◽  
Xiang Zhao ◽  
Eiji Osawa
Keyword(s):  
Fullerene Cage ◽  
Metal Bond ◽  
Metal Metal

Reactivity of the metal—metal bond

1971 ◽  
Vol 31 (2) ◽  
pp. 227-232 ◽  
Author(s):  
H.C. Clark ◽  
B.K. Hunter
Keyword(s):  
Metal Bond ◽  
Metal Metal

scholarly journals Chemistry of Bridging Ketene from Facile Carbonylation of a Ditungsten Methylene Complex with No Metal−Metal Bond

1997 ◽  
Vol 16 (8) ◽  
pp. 1573-1580 ◽  
Author(s):  
Yu-Lee Yang ◽  
Luxti Jun-Jieh Wang ◽  
Ying-Chih Lin ◽  
Shou-Ling Huang ◽  
Ming-Chou Chen ◽  
...  
Keyword(s):  
Metal Bond ◽  
Metal Metal
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