scholarly journals Carbones and Carbon Atom as Ligands in Transition Metal Complexes

Molecules ◽  
2020 ◽  
Vol 25 (21) ◽  
pp. 4943 ◽  
Author(s):  
Lili Zhao ◽  
Chaoqun Chai ◽  
Wolfgang Petz ◽  
Gernot Frenking

This review summarizes experimental and theoretical studies of transition metal complexes with two types of novel metal-carbon bonds. One type features complexes with carbones CL2 as ligands, where the carbon(0) atom has two electron lone pairs which engage in double (σ and π) donation to the metal atom [M]⇇CL2. The second part of this review reports complexes which have a neutral carbon atom C as ligand. Carbido complexes with naked carbon atoms may be considered as endpoint of the series [M]-CR3 → [M]-CR2 → [M]-CR → [M]-C. This review includes some work on uranium and cerium complexes, but it does not present a complete coverage of actinide and lanthanide complexes with carbone or carbide ligands.

2019 ◽  
Vol 31 (11) ◽  
pp. 2430-2438 ◽  
Author(s):  
Vian Yamin Jirjees ◽  
Veyan Taher Suleman ◽  
Abbas Ali Salih Al-Hamdani ◽  
Suzan Duraid Ahmed

A new Schiff base [1-((2-(1H-indol-3-yl)ethylimino)methyl)naphthalene-2-ol] (HL) has been synthesized by condensing (2-hydroxy-1-naphthaldehyde) with (2-(1H-indol-3-yl)ethylamine). In turn, its transition metal complexes were prepared having the general formula; [Pt(IV)Cl2(L)2], [Re(V)Cl2(L)2]Cl and [Pd(L)2], 2K[M(II)Cl2(L)2] where M(II) = Co, Ni, Cu] are reported. Ligand as well as metal complexes are characterized by spectroscopic techniques such as FT-IR, UV-visible, 13C & 1H NMR, mass, elemental analysis. The results suggested that the ligand behaves like a bidentate ligand for all the synthesized complexes. On the other hand, theoretical studies of the ligand as well its metal complexes were conducted at gas phase using HyperChem 8.0. These metal complexes exhibited good antibacterial activity.


1973 ◽  
Vol 26 (1) ◽  
pp. 29 ◽  
Author(s):  
GA Bowmaker ◽  
LD Brockliss ◽  
R Whiting

The i.r. and Raman spectra of the dihalocuprate(1) ions CuX2- (X = Cl, Br) have been measured in solution, and in a number of crystalline compounds with large organic cations. The halogen and copper n.q.r. frequencies of the CuX2- ions in some of the solid complexes were also measured. In all cases, the ions were found to have linear, centrosymmetric structures. The various theories which have been proposed to describe the bonding in linear d10 transition metal complexes are discussed, and it is concluded that the scheme proposed by Orgel and Jorgensen, involving ds hybridization on the metal atom, best accounts for the n.q.r. results, although some uncertainty is introduced through the lack of sufficient information concerning the magnitude of the Sternheimer effect. An experiment which might differentiate between the ds and sp hybridization schemes in the case of linear AuI complexes is proposed.


2000 ◽  
Vol 100 (2) ◽  
pp. 353-406 ◽  
Author(s):  
Shuqiang Niu ◽  
Michael B. Hall

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