Synthesis and Characterization of an Iron Complex Bearing a Cyclic Tetra-N-heterocyclic Carbene Ligand: An Artifical Heme Analogue?

2015 ◽  
Vol 54 (8) ◽  
pp. 3797-3804 ◽  
Author(s):  
Markus R. Anneser ◽  
Stefan Haslinger ◽  
Alexander Pöthig ◽  
Mirza Cokoja ◽  
Jean-Marie Basset ◽  
...  
Keyword(s):  
Iron Complex ◽  
Synthesis And Characterization

Synthesis and structure of 3,5-dimethylpyrazolyl iron and cobalt dinitrosyl dimers

1979 ◽  
Vol 57 (23) ◽  
pp. 3119-3125 ◽  
Author(s):  
Kenneth S. Chong ◽  
Steven J. Rettig ◽  
Alan Storr ◽  
James Trotter
Keyword(s):  
Cobalt Complex ◽  
Cobalt Complexes ◽  
Iron Complex ◽  
Synthesis And Characterization ◽  
Monoclinic Space Group ◽  
Boat Conformation ◽  
Coordination Geometry ◽  
X Ray ◽  
Metal Atoms

The synthesis and characterization of two 3,5-dimethylpyrazolyl metal dinitrosyl dimers [(N2C5H7)M(NO)2]2 (where M = Fe or Co) are described and their X-ray crystal structures detailed. Both complexes crystallize in the monoclinic space group C2/c, a = 23.848(2), 23.722(4), b = 10.7775(7), 10.6888(6), c = 14.764(1), 14.712(2) Å, β = 117.366(6), 117.094(7)°, Z = 8 (for the iron and cobalt complexes respectively). The structure of the iron complex was solved by Patterson and Fourier syntheses. The cobalt complex is isomorphous with the iron analog. Both structures were refined by full-matrix least-squares procedures to R = 0.028 and 0.035 for 4251 and 3376 reflections with I ≥ 3σ(I) respectively. Both complexes adopt a boat conformation for the central M—(N—N)2—M ring and display significantly non-linear M—N—O groups. The coordination geometry about the metal atoms is distorted tetrahedral. Important molecular dimensions (distances corrected for libration) are: mean Fe—N(pyrazolyl), 2.009(5), mean Fe—NO, 1.696(2) Å, Fe—N—O, 158.5(3)–168.2(2)°, mean Co—N(pyrazolyl), 1.992(7), Co—NO, 1.646(3)–1.680(3) Å, and Co—N—O, 161.6(3)–173.5(3)°. The iron complex is paramagnetic with formally "17-electron" iron atoms. Both structures are compared with similar four-coordinate metal dinitrosyl compounds.

Synthesis and characterization of an iron complex bearing a hemilabile NNN-pincer for catalytic hydrosilylation of organic carbonyl compounds

2018 ◽  
Vol 47 (10) ◽  
pp. 3243-3247 ◽  
Author(s):  
Hsiu-Jung Lin ◽  
Sean Lutz ◽  
Catherine O'Kane ◽  
Matthias Zeller ◽  
Chun-Hsing Chen ◽  
...  
Keyword(s):  
Carbonyl Compounds ◽  
Iron Complex ◽  
Synthesis And Characterization ◽  
Catalytic Hydrosilylation

A new design of a low-coordinate iron complex, bearing a hemilabile ligand, served as an effective hydrosilylation pre-catalyst.

Synthesis and Characterization of the Three Dicyclopentapyrenes

1996 ◽  
Vol 61 (10) ◽  
pp. 3572-3572
Author(s):  
Lawrence T. Scott ◽  
Atena Necula
Keyword(s):  
Synthesis And Characterization
Sign in / Sign up

Export Citation Format

Share Document