19414-68-7Relevant academic research and scientific papers
Interaction of nitrogen bases with iron-porphyrin nitrito complexes Fe(Por)(ONO) in sublimed solids
Kurtikyan, Tigran S.,Hovhannisyan, Astghik A.,Gulyan, Gurgen M.,Ford, Peter C.
, p. 7024 - 7031 (2007)
The reactions of the nitrogen Lewis bases (B) 1-methylimidazole (1-Melm), pyridine (Py), and NH3 as gases with sublimed layers containing the 5-coordinate nitrito iron(III)-porphyrinato complexes Fe(Por)(η1- ONO) (1) are described (P
Four-coordinate iron(II) porphyrinates: Electronic configuration change by intermolecular interaction
Hu, Chuanjiang,Noll, Bruce C.,Schulz, Charles E.,Scheidt, W. Robert
, p. 619 - 621 (2007)
The syntheses and structures of three four-coordinate iron(II) porphyrinates are reported. The three derivatives are tetraarylporphyrin species, where the aryl is either phenyl, p-methylphenyl, or p-methoxyphenyl. One of these derivatives, that of tetraph
Perspectives on Ligand Properties of N-Heterocyclic Carbenes in Iron Porphyrin Complexes
Wang, Haimang,Liu, Yulong,Su, Chaorui,Schulz, Charles E.,Fan, Yingying,Bian, Yongzhong,Li, Jianfeng
, p. 847 - 856 (2022/01/11)
There has been considerable research interest in the ligand nature of N-heterocyclic carbenes (NHCs). In this work, two six-coordinate NHC iron porphyrin complexes [FeII(TTP)(1,3-Me2Imd)2] (TTP = tetratolylporphyrin, 1,3-Me2Imd = 1,3-dimethylimidazol-2-ylidene) and [FeIII(TDCPP)(1,3-Me2Imd)2]ClO4 (TDCPP = 5,10,15,20-tetrakis(2,6-dichlorophenyl)porphyrin) are reported. Single-crystal X-ray characterizations demonstrate that both complexes have strongly ruffled conformations and relatively perpendicular ligand orientations which are forced by the sterically bulky 1,3-Me2Imd NHC ligands. Multitemperature (4.2-300 K) and high magnetic field (0-9 T) M?ssbauer and low-temperature (4.0 K) EPR spectroscopies definitely confirmed the low-spin states of [FeII(TTP)(1,3-Me2Imd)2] (S = 0) and [FeIII(TDCPP)(1,3-Me2Imd)2]ClO4 (S = 1/2). The similarity of 1,3-Me2Imd and imidazole, as well as the well-established correlations between the ligand nature and spectroscopic characteristics of [FeII,III(Porph)(L)2]0,+ (Porph: porphyrin; L: planar base ligand) species, allowed direct comparisons between the pair of ligands which revealed for the first time that NHC has a stronger π-acceptor ability than imidazoles, in addition to its very strong σ-donation.
Six-coordinate nitro complexes of iron(III) porphyrins with trans S-donor ligands. Oxo-transfer reactivity in the solid state
Kurtikyan, Tigran S.,Hovhannisyan, Astghik A.,Iretskii, Alexei V.,Ford, Peter C.
, p. 11236 - 11241 (2010/03/04)
Spectroscopic studies demonstrate that the 5-coordinate O-nitrito complexes Fe(Por)(η1-ONO) (Por - mesotetraphenyl- or meso-tetra-p-tolyl- porphyrinato dianions) react with the thioethers (R2S) dimethylsulfide and tetrahydrothiophene
Reactions of nitrogen oxides with heme models: Spectral characterization of an elusive five-coordinate FeIII(porphyrin) nitrito intermediate
Kurtikyan, Tigran S.,Ford, Peter C.
, p. 492 - 496 (2007/10/03)
(Chemical Equation Presented) The famous five: The elusive five-coordinate nitrito complexes [FeIII(por)(ONO)] (por = meso- tetraphenylporphyrinato dianion or meso-tetra-p-tolylporphyrinato dianion) have been obtained by interaction of low-pres
Electronic configuration assignment and the importance of low-lying excited states in high-spin imidazole-ligated iron(II) porphyrinates
Hu, Chuanjiang,Roth, Arne,Ellison, Mary K.,An, Jin,Ellis, Christina M.,Schulz, Charles E.,Scheidt, W. Robert
, p. 5675 - 5688 (2007/10/03)
The synthesis and characterization of six new high-spin deoxymyoglobin models (imidazole-(tetraarylporphyrinato)iron(II)) are described. These have been intensively studied by temperature-dependent Moessbauer spectroscopy from 295 to 4.2 K. All complexes
Catalytic cyclopropanation with iron(II) complexes
Hamaker, Christopher G.,Mirafzal, Gholam A.,Woo, L. Keith
, p. 5171 - 5176 (2008/10/08)
Iron(II) complexes of meso-tetra-p-tolylporphyrin (TTP), tetramethyldibenzotetraaza[14]-annulene (tmtaa), and trans-1,2-bis(salicylidene)cyclohexanediamine (saldach) catalyzed the cyclopropanation of styrene with aryldiazomethanes. When p-tolyldiazomethane was used as the carbene source, trans-cyclopropanes were the major products. Trans/cis ratios of up to 17:1 were obtained. However, using mesityldiazomethane resulted in a reversal of stereoselectivity, giving cis-cyclopropanes as the major product (cis/trans ratios of up to 2.9: 1). The stereoselectivity of iron(II) porphyrin-catalyzed cyclopropanation reactions was enhanced by performing the reactions at low temperature or by using bulky porphyrin ligands. Using trimethylsilyldiazomethane as the carbene source, trimethylsilylcyclopropanes were produced in excellent yields with (TTP)Fe. On treatment of (TTP)Fe with diazoreagents, carbene complexes were observed spectroscopically. These complexes transferred their carbene ligand to styrene to produce cyclopropanes stoichiometrically.
Kinetics, mechanism and thermodynamics of iron carbon bond dissociation in organoiron porphyrin complexes
Riordan, Charles G.,Halpern, Jack
, p. 19 - 24 (2008/10/08)
Thermolysis of Fe(P)R (P = octaethylporphyrinato dianion, R = C6H5, CH3, C2H5, CH2C(CH3)3; P = tetraphenylporphyrinato dianion, R = C6H5; P = tet
