Carbene complexes. Part 21. Synthesis and characterisation of bis(carbene)molybdenum(II) complexes and dimetal(0) complexes of the Group 6 elements containing novel bridging bis(carbene) ligands; X-ray structures of [Mo(CO)2(LEt)2(OSO2CF3)2][LEt=CN(Et)(CH2)2NEt] and [W(CO)5{C(OEt)CH2C6H4CH2C(OEt)-o}W(CO)5]

1987 ◽  
pp. 2843-2851 ◽  
Author(s):  
David M. Anderson ◽  
Garry S. Bristow ◽  
Peter B. Hitchcock ◽  
Hatam A. Jasim ◽  
Michael F. Lappert ◽  
...  
Keyword(s):  
Carbene Ligands ◽  
Carbene Complexes ◽  
X Ray ◽  
Group 6

Carbene Adducts of Dimethylcadmium

1999 ◽  
Vol 54 (11) ◽  
pp. 1350-1356 ◽  
Author(s):  
Anthony J. Arduengo ◽  
Jens R. Goerlicha ◽  
Fredric Davidson ◽  
William J. Marshall
Keyword(s):  
Nmr Spectroscopy ◽  
Bond Distance ◽  
Imidazole Ring ◽  
Methyl Groups ◽  
Carbene Ligands ◽  
Cadmium Complexes ◽  
Carbene Complexes ◽  
X Ray ◽  
Planar Geometries

The first examples of carbene-cadmium complexes are reported from the reactions of a variety of imidazol-2-ylidenes or imidazolin-2-ylidenes with dimethylcadmium. Four new carbene complexes are characterized by NMR spectroscopy (1H , 13C and 113Cd). The cadmium centers are strongly shifted downfield (100 -150 ppm) by interaction with the carbenes. X-ray structures are reported for three carbene-cadmium 1:1 adducts. The cadmium centers exhibit distorted trigonal-planar geometries in which the carbene ligands have an average 18.2 pm longer bond distance to cadmium compared to the methyl groups. The planes of cadmium coordination are twisted with respect to the plane of the imidazole ring. The more basic imidazolin-2-ylidene is shown to displace imidazol-2-ylidenes from the cadmium center.

Chromium(0)–rhodium(I) metal exchange: Synthesis and X-ray structure of new Fischer (NHC)carbene complexes of rhodium(I)

2006 ◽  
Vol 691 (26) ◽  
pp. 5642-5647 ◽  
Author(s):  
José Barluenga ◽  
Rubén Vicente ◽  
Luis A. López ◽  
Miguel Tomás
Keyword(s):  
Metal Exchange ◽  
Carbene Complexes ◽  
X Ray

Olefin-tethered organoruthenium carbene complexes: Synthesis, X-ray structure and catalytic insights on hydrogenation of esters

2019 ◽  
Vol 486 ◽  
pp. 55-62
Author(s):  
Muthukumaran Nirmala ◽  
Kaliyappan Murugan ◽  
Subbarayan Vijayapritha ◽  
Periasamy Viswanathamurthi ◽  
Roberta Bertani ◽  
...  
Keyword(s):  
Carbene Complexes ◽  
X Ray

New Cascade Processes on Group 6 Fischer-Type Carbene Complexes:  Cyclopropanation and Metathesis Reactions

2007 ◽  
Vol 9 (21) ◽  
pp. 4143-4146 ◽  
Author(s):  
José Barluenga ◽  
Facundo Andina ◽  
Fernando Aznar ◽  
Carlos Valdés
Keyword(s):  
Carbene Complexes ◽  
Group 6 ◽  
Metathesis Reactions ◽  
Cascade Processes

Formal Alkyne Insertion into Alkoxycarbene Complexes: Simple Access to Enantiopure Group 6 Alkynyl(alkoxy)carbene Complexes.

ChemInform ◽  
2005 ◽  
Vol 36 (49) ◽  
Author(s):  
Jose Barluenga ◽  
Ramon Bernardo de la Rua ◽  
Diana de Saa ◽  
Alfredo Ballesteros ◽  
Miguel Tomas
Keyword(s):  
Carbene Complexes ◽  
Group 6 ◽  
Alkyne Insertion
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