78833-52-0Relevant academic research and scientific papers
SYNTHESE ET CARACTERISTIQUES PHYSICOCHIMIQUES DE GALLIOPORPHYRINES A LIAISON ? METAL-CARBONE
Coutsolelos, A.,Guilard, R.
, p. 273 - 282 (1983)
Novel gallium(III) porphyrins containing a metal-carbon bond have been prepared by the reaction of chlorogallium(III) porphyrins with organolithium derivatives of Grignard reagents.The products obtained are characterized on the basis of mass spectrometry, and 1H NMR and UV spectra.
Single hydroxo-bridged group 13 metalloporphyrin dimers: Solution studies and solid-state structures
Munro, Orde Q.,Coutsolelos, Athanassios G.,Cheng, Beisong,Scheidt, W. Robert
, p. 969 - 989 (2019)
The syntheses of indium, gallium and aluminum porphyrin dimers with a single hydroxo-bridge, {[M(Porph)]2(OH)}+, are described. Emphasis is given to indium and gallium derivatives. The X-ray structures for { [Ga(OEP)]2(OH)} ClO4 and { [In(OEP)]2(OH)} ClO4 (two forms) are presented. The dimeric molecules can be synthesized by the acid-treatment of the corresponding hydroxo-ligated monomeric complexes [M(OEP)(OH)] and [M(TPP)(OH)]. The nature of the starting material (the hydroxo-ligated monomer) was first suggested by IR spectroscopy and further proved by proton-deuterium exchange followed by 1H NMR spectroscopy. The structure of a monomeric indium hydroxide complex, [In(OEP)(OH)], is also presented. The synthesis of the dimer for all metals can be monitored by UV-vis spectroscopy, which clearly demonstrates that a blue-shift of the Soret band accompanies formation of the dimer from the monomer. A strong π-πinteraction between the two porphyrin rings of these μ-hydroxo-bridged dimers is confirmed both by solution state studies (1H NMR and UV-vis spectroscopy) and the X-ray structures of { [M(OEP)]2(OH)} ClO4 (M = In, Ga). In addition, exposure of methylene chloride solutions of these bridged complexes to white light afforded the corresponding chloro derivatives, [M(Porph)Cl]. The stereochemistry of a range of μ-hydroxo dimers is discussed and DFT simulations at the HSEH1PBE/SDD level of theory provide suitable structural models and further electronic structure insights on selected [Ga(Porph)(OH)] and { [Ga(Porph)]2(OH)}+ derivatives.
Gallium porphyrin axial functionalized graphene oxide multi-element nano hybrid material, and preparation method and application thereof
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Paragraph 0027; 0035-0036, (2021/01/25)
The invention discloses a gallium porphyrin axial functionalized graphene oxide multi-element nano hybrid material, and a preparation method and application thereof. The multi-element nano hybrid material is prepared by modifying graphene oxide through ax
Electrocatalytic hydrogen evolution with gallium hydride and ligand-centered reduction
Wang, Ni,Lei, Haitao,Zhang, Zongyao,Li, Jianfeng,Zhang, Wei,Cao, Rui
, p. 2308 - 2314 (2019/03/02)
GaIII chloride tetrakis(pentafluorophenyl)porphyrin (1) was synthesized and shown to be a highly active and stable post-transition metal-based electrocatalyst for the hydrogen evolution reaction (HER). Electrochemical and spectroscopic studies
Hydrogen peroxide: A poor ligand to gallium tetraphenylporphyrin
DiPasquale, Antonio G.,Mayer, James M.
, p. 1812 - 1813 (2008/09/17)
As models for possible heme-iron-H2O2 enzymatic intermediates, tetraphenylporphyrin (TPP)-gallium chemistry has been explored in CD2Cl2. (TPP)GaOTf (1) and (TPP)Ga(ClO4) (2) have been prepared from (TPP)GaCl and AgOTf or AgClO4. Trace water reacts with 2 to give [(TPP)Ga(OH2)](ClO4) (5) and with (TPP)GaOOtBu to give (TPP)GaOH (3). These complexes were fully characterized including X-ray structures for 1, 3, the bis(aquo) analogue of 5, and the methyl derivative (TPP)GaMe (4). A convenient procedure for preparing anhydrous dilute solutions of H2O2 in methylene chloride is described. All of these gallium complexes, however, are unreactive with this anhydrous H2O2 in CD2Cl2. H2O2 does not displace even the weakly coordinating perchlorate or triflate anions, or coordinated water, indicating that H2O2 is a very weak ligand. Copyright
Binding of propylene oxide to porphyrin- and salen-M(III) cations, where M = Al, Ga, Cr, and Co
Chen, Peter,Chisholm, Malcolm H.,Gallucci, Judith C.,Zhang, Xiangyang,Zhou, Zhiping
, p. 2588 - 2595 (2008/10/09)
The binding of propylene oxide (PO) to a series of metal cations LM(III)+, where for L = tetraphenylporphyrin (TPP) M = Al, Ga, Cr, and Co, and for L = (R,R)-N,N′-bis(3,5-di-tert-butylsalicylidene)-1,2- cyclohexenediamine (salen) M = Al and Cr, was studied in the gas phase by electrospray tandem mass spectroscopy, and the relative stabilities of LM(PO)2+ and LM(PO)+ cations were determined. The chromium(III) and aluminum(III) cations most tenaciously bind PO, and for M = Al, coordination to the TPP ligated metal center was favored relative to salen. For (TPP)M(PO)2+, the dissociation of PO followed the order M = Al > Cr, but for (TPP)M(PO)+ the dissociation was M = Cr > Al. The single-crystal structural determinations on (R,R-salen)AlOCHMe(S)CH2Cl-0.5PO and (R,R-salen)AlO 2CMe-1.5py grown in neat PO and pyridine, respectively, reveal five-coordinate aluminum(III) centers with the alkoxide/acetate ligands in the axial position of a square-based pyramid. These results are discussed in terms of the reactivity of these metal complexes in ring-opening polymerizations and copolymerizations with PO and CO2, respectively.
Coordination Properties of Ga, In, and Tl Tetraphenylporphine Complexes in Reactions with Nitrogen-containing Extra Ligands
Zaitzeva,Zdanovich,Ageeva,Golubchikov
, p. 145 - 150 (2007/10/03)
The formation of Ga3+, In3+, and T13+ tetraphenylporphine mixed-ligand complexes (X)MTPP + L = (X)M(L)TPP (X = Cl -, AcO-, acac-; L = N-methylimidazole, imidazole, pyridine, 3,5-dimethylpyr
Synthesis, electrochemistry, and ligand-addition reactions of gallium(III) porphyrins
Kadish,Cornillon,Coutsolelos,Guilard
, p. 4167 - 4173 (2008/10/08)
The synthesis, electrochemistry, and ligand-addition reactions of ionic five- and six-coordinate gallium(III) porphyrins are reported. The reactions of N-methylimidazole and pyridine with (P)GaX, where P = the dianion of octaethylporphyrin (OEP) or tetrap
