Tag: M.W=350-400

Shaffer, David W.’s team published research in Inorganic Chemistry in 53 | CAS: 338800-13-8

Inorganic Chemistry published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C9H10O4, Product Details of C23H43NP2.

Shaffer, David W. published the artcileReactivity of a Series of Isostructural Cobalt Pincer Complexes with CO2, CO, and H+, Product Details of C23H43NP2, the publication is Inorganic Chemistry (2014), 53(24), 13031-13041, database is CAplus and MEDLINE.

The preparation and characterization of a series of isostructural cobalt complexes [Co(t-Bu)2PEPyEP(t-Bu)2(MeCN)2][BF4]2 (Py = pyridine, E = CH2, NH, O, and X = BF4 (1a–c)) and the corresponding one-electron reduced analogs [Co(t-Bu)2PEPyEP(t-Bu)2(MeCN)][BF4] (2a–c) are reported. The reactivity of the reduced cobalt complexes with CO2, CO, and H+ to generate intermediates in a CO2 reduction to CO and H2O cycle are described. The reduction of 1a–c and subsequent reactivity with CO2 was investigated by cyclic voltammetry, and for 1a also by IR spectroelectrochem. The corresponding CO complexes of (2a–c) were prepared, and the Co-CO bond strengths were characterized by IR spectroscopy. Quantum mech. methods (B3LYP-d3 with solvation) were used to characterize the competitive reactivity of the reduced cobalt centers with H+ vs. CO2. By investigating a series of isostructural complexes, correlations in reactivity with ligand electron withdrawing effects are made.

Inorganic Chemistry published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C9H10O4, Product Details of C23H43NP2.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Fogler, Eran’s team published research in Inorganic Chemistry in 52 | CAS: 338800-13-8

Inorganic Chemistry published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C23H43NP2, Product Details of C23H43NP2.

Fogler, Eran published the artcileRu(0) and Ru(II) Nitrosyl Pincer Complexes: Structure, Reactivity, and Catalytic Activity, Product Details of C23H43NP2, the publication is Inorganic Chemistry (2013), 52(19), 11469-11479, database is CAplus and MEDLINE.

Despite considerable interest in ruthenium carbonyl pincer complexes and their substantial catalytic activity, there has been relatively little study of the isoelectronic ruthenium nitrosyl complexes. Here the authors describe the synthesis and reactivity of several complexes of this type as well as the catalytic activity of complex 6. Reaction of the PNP ligand (PNP = 2,6-bis(tBu2PCH2)pyridine) with RuCl3(NO)(PPh3)2 yielded the Ru(II) complex 3. Chloride displacement by BArF- (BArF- = tetrakis(3,5-bis(trifluoromethyl)phenyl)borate) gave the crystallog. characterized, linear NO Ru(II) complex 4, which upon treatment with NaBEt3H yielded the Ru(0) complexes 5. The crystallog. characterized Ru(0) square planar complex 5·BF4 bears a linear NO ligand located trans to the pyridyl nitrogen. Further treatment of 5·BF4 with excess LiOH gave the crystallog. characterized Ru(0) square planar, linear NO complex 6. Complex 6 catalyzes the dehydrogenative coupling of alcs. to esters, reaching full conversion under air or under argon. Reaction of the PNN ligand (PNN = 2-(tBu2PCH2)-6-(Et2NCH2)pyridine) with RuCl3(NO)(H2O)2 in ethanol gave an equilibrium mixture of isomers 7a and 7b. Further treatment of 7a + 7b with 2 equiv of sodium isopropoxide gave the crystallog. characterized, bent-nitrosyl, square pyramidal Ru(II) complex 8. Complex 8 was also synthesized by reaction of PNN with RuCl3(NO)(H2O)2 and Et3N in ethanol. Reaction of the “long arm” PN2N ligand (PN2N = 2-(tBu2PCH2)-6-(Me2NCH2CH2)pyridine) with RuCl3(NO)(H2O)2 in ethanol gave complex 9, which upon treatment with 2 equiv of sodium isopropoxide gave complex 10. Complex 10 was also synthesized directly by reaction of PN2N with RuCl3(NO)(H2O)2 and a base in ethanol. A noteworthy aspect of these nitrosyl complexes is their preference for the Ru(0) oxidation state over Ru(II). This preference is observed with both aromatized and dearomatized pincer ligands, in contrast to the Ru(II) oxidation state which is preferred by the analogous carbonyl complexes.

Inorganic Chemistry published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C23H43NP2, Product Details of C23H43NP2.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Goncalves, Theo P.’s team published research in Journal of the American Chemical Society in 139 | CAS: 338800-13-8

Journal of the American Chemical Society published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C23H43NP2, SDS of cas: 338800-13-8.

Goncalves, Theo P. published the artcileMetal-Ligand Cooperative Reactivity in the (Pseudo)-Dearomatized PNx(P) Systems: The Influence of the Zwitterionic Form in Dearomatized Pincer Complexes, SDS of cas: 338800-13-8, the publication is Journal of the American Chemical Society (2017), 139(38), 13442-13449, database is CAplus and MEDLINE.

The concept of aromaticity in pincer ligands and complexes was discussed in order to provide insights into their metal-ligand cooperative activities. The aromatic PNx(P) and dearomatized PNx(P)* pincer ligands and the corresponding transition metal complexes were studied with the nucleus-independent chem. shift (NICSzz), anisotropy of the current (induced) d. (ACID), isochem. shielding surfaces (ICSSzz), harmonic oscillator model of aromaticity (HOMA), MCBO, Shannon aromaticity, and natural bond order (NBO) analyses. The study on the model systems showed that for the dearomatized species the decrease of the NICS(1)zz value comes with the larger contribution of the aromatic zwitterionic mesomeric form. In all examples, the incorporation of the metal center into the pincer ligand decreases the NICS(1)zz values. The DFT calculations support the dearomatized pyridine ring in PNP* or PNN* ligand indeed being nonaromatic, in contrast to the PN3(P)* ligand which has partial aromatic character due to the larger contribution of the zwitterionic resonance structure. The difference in aromaticity between the rings contributes to the thermodn. balance of the metal ligand cooperative reactions, changing the energetics of the process when different dearomatized pincer ligands are used. This was further exemplified by aromaticity anal. of the heterolytic hydrogen cleavage reaction of ruthenium PNN complexes of Milstein and the PN3 of Huang, with similar geometries but distinctive thermodn. preference.

Journal of the American Chemical Society published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C23H43NP2, SDS of cas: 338800-13-8.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Wu, Guanglu’s team published research in Angewandte Chemie, International Edition in 59 | CAS: 47369-00-6

Angewandte Chemie, International Edition published new progress about 47369-00-6. 47369-00-6 belongs to pyridine-derivatives, auxiliary class Pyridine,Salt,Benzene,Organic ligands for MOF materials,Nitrogen containing MOF ligands,Nitrogen containing MOF ligands, name is 1,1′-Diphenyl-[4,4′-bipyridine]-1,1′-diium chloride, and the molecular formula is C9H22OSi, Name: 1,1′-Diphenyl-[4,4′-bipyridine]-1,1′-diium chloride.

Wu, Guanglu published the artcileQuantitative Supramolecular Heterodimerization for Efficient Energy Transfer, Name: 1,1′-Diphenyl-[4,4′-bipyridine]-1,1′-diium chloride, the publication is Angewandte Chemie, International Edition (2020), 59(37), 15963-15967, database is CAplus and MEDLINE.

The challenge of quant. forming self-assembled heterodimers without other equilibrium byproducts is overcome through self-sorting favored by the introduction of designed shape-complementary moieties. Such a supramol. strategy based on cucurbit[8]uril-directed dimerization is further applied to generate hetero-chromophore dimers quant., leading to efficient energy transfer (>85%) upon photoexcitation.

Angewandte Chemie, International Edition published new progress about 47369-00-6. 47369-00-6 belongs to pyridine-derivatives, auxiliary class Pyridine,Salt,Benzene,Organic ligands for MOF materials,Nitrogen containing MOF ligands,Nitrogen containing MOF ligands, name is 1,1′-Diphenyl-[4,4′-bipyridine]-1,1′-diium chloride, and the molecular formula is C9H22OSi, Name: 1,1′-Diphenyl-[4,4′-bipyridine]-1,1′-diium chloride.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Katagiri, Takayuki’s team published research in Journal of Photochemistry and Photobiology, A: Chemistry in 358 | CAS: 47369-00-6

Journal of Photochemistry and Photobiology, A: Chemistry published new progress about 47369-00-6. 47369-00-6 belongs to pyridine-derivatives, auxiliary class Pyridine,Salt,Benzene,Organic ligands for MOF materials,Nitrogen containing MOF ligands,Nitrogen containing MOF ligands, name is 1,1′-Diphenyl-[4,4′-bipyridine]-1,1′-diium chloride, and the molecular formula is C22H18Cl2N2, Related Products of pyridine-derivatives.

Katagiri, Takayuki published the artcileVisible light-induced reduction properties of diphenylviologen with water-soluble porphyrin, Related Products of pyridine-derivatives, the publication is Journal of Photochemistry and Photobiology, A: Chemistry (2018), 368-373, database is CAplus.

Mol. conversion reaction system containing a dye and a biocatalyst catalyzing a reaction of a carbon-carbon bond formation from CO2 as a feedstock were constructed. For example, NADP-malic enzyme (ME, EC1.1.1.40) catalyzes the reaction of introducing CO2 as a carboxy group to pyruvate (C3 compound) to form malate (C4 compound) via oxaloacetate in the presence of natural co-enzyme NADPH. In a recent study, visible light-induced oxaloacetate production from pyruvate and CO2 with the system consisting an electron donor, a photosensitizer, diphenylviologen (PV2+) derivative as an electron mediator and ME was reported. However, the visible light-induced reduction properties of PV2+ with water-soluble Zn porphyrin have not been clarified. In this study, chem. and photo-redox properties of PV2+ were studied. In addition, to produce malate, CO2 saturated reaction solution containing triethanolamine, tetraphenylporphine tetrasulfonate (H2TPPS), pyruvate, PV2+ and ME in the presence of Mg2+, co-factor for ME was irradiated with visible-light, the oxaloacetate and malate were produced.

Journal of Photochemistry and Photobiology, A: Chemistry published new progress about 47369-00-6. 47369-00-6 belongs to pyridine-derivatives, auxiliary class Pyridine,Salt,Benzene,Organic ligands for MOF materials,Nitrogen containing MOF ligands,Nitrogen containing MOF ligands, name is 1,1′-Diphenyl-[4,4′-bipyridine]-1,1′-diium chloride, and the molecular formula is C22H18Cl2N2, Related Products of pyridine-derivatives.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Doyle, Laurence R.’s team published research in Advanced Synthesis & Catalysis in 356 | CAS: 338800-13-8

Advanced Synthesis & Catalysis published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C23H43NP2, COA of Formula: C23H43NP2.

Doyle, Laurence R. published the artcileA Convenient Synthetic Protocol to 1,2-Bis(dialkylphosphino)ethanes, COA of Formula: C23H43NP2, the publication is Advanced Synthesis & Catalysis (2014), 356(2-3), 603-608, database is CAplus and MEDLINE.

1,2-Bis(dialkylphosphino)ethanes are readily prepared from the parent phosphine oxides, via a novel NaAlH4/NaH reduction protocol of intermediate chlorophosphonium chlorides. This approach is amenable to multi-gram syntheses, uses readily available and inexpensive reagents, and benefits from a facile nonaqueous work-up in the final reductive step.

Advanced Synthesis & Catalysis published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C23H43NP2, COA of Formula: C23H43NP2.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Hanson, Susan Kloek’s team published research in Organometallics in 27 | CAS: 338800-13-8

Organometallics published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C23H43NP2, HPLC of Formula: 338800-13-8.

Hanson, Susan Kloek published the artcileC-H Bond Activation by Rhodium(I) Phenoxide and Acetate Complexes: Mechanism of H-D Exchange between Arenes and Water, HPLC of Formula: 338800-13-8, the publication is Organometallics (2008), 27(7), 1454-1463, database is CAplus.

New rhodium(I) complexes (PNP)Rh(X) (PNP = 2,6-bis(di-tert-butylphosphinomethyl)pyridine) (X = OTf (1), OAc (3), OH (8), OCH2CF3 (9), OC6H5 (10), OC6H4NO2 (11)) have been prepared Hydroxide complex 8 and trifluoroethoxide complex 9 undergo stoichiometric activation of benzene-d6 to form the Ph complex (PNP)Rh(C6D5). Acetate and aryloxide complexes 3, 10, and 11 are active catalysts for H-D exchange between arenes and water. Control experiments indicate that the rhodium complexes are the active catalysts and that the observed exchange is not catalyzed by adventitious acid. Mechanistic studies of the H-D exchange reaction support a pathway involving dissociation of aryloxide or acetate ligand. The reaction is accelerated by added alc. and, for the acetate complex, inhibited by added sodium acetate.

Organometallics published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C23H43NP2, HPLC of Formula: 338800-13-8.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Kloek, Susan M.’s team published research in Angewandte Chemie, International Edition in 46 | CAS: 338800-13-8

Angewandte Chemie, International Edition published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C23H43NP2, Related Products of pyridine-derivatives.

Kloek, Susan M. published the artcileC-H bond activation by rhodium(I) hydroxide and phenoxide complexes, Related Products of pyridine-derivatives, the publication is Angewandte Chemie, International Edition (2007), 46(25), 4736-4738, database is CAplus and MEDLINE.

Rhodium(I) complexes of the form [(PNP)Rh(OR)](R = H, CH2CF3, C6H5; PNP = 2,6-bis[(di-tert-butylphosphino)-methyl]pyridine) have been prepared Upon thermolysis in [D6]benzene, the hydroxide and trifluoroethoxide complexes undergo benzene activation. [(PNP)Rh(OC6H5)] is an active catalyst for the H/D exchange between D2O and benzene and between H2O and [D8]toluene, for which exchange occurs selectively at the meta and para positions.

Angewandte Chemie, International Edition published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C23H43NP2, Related Products of pyridine-derivatives.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Kaithal, Akash’s team published research in Angewandte Chemie, International Edition in 57 | CAS: 338800-13-8

Angewandte Chemie, International Edition published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C23H43NP2, Synthetic Route of 338800-13-8.

Kaithal, Akash published the artcileCatalytic Hydrogenation of Cyclic Carbonates using Manganese Complexes, Synthetic Route of 338800-13-8, the publication is Angewandte Chemie, International Edition (2018), 57(41), 13449-13453, database is CAplus and MEDLINE.

Catalytic hydrogenation of cyclic carbonates to diols and methanol was achieved using a mol. catalyst based on earth-abundant manganese. The complex [Mn(CO)2(Br)][HN(C2H4PiPr2)2] 1 comprising com. available MACHO ligand is an effective pre-catalyst operating under relatively mild conditions (T=120 °C, p(H2)=30-60 bar). Upon activation with NaOtBu, the formation of coordinatively unsaturated complex [Mn(CO)2][N((C2H4PiPr2)2)] 5 was spectroscopically verified, which confirmed a kinetically competent intermediate. With the pre-activated complex, turnover numbers up to 620 and 400 were achieved for the formation of the diol and methanol, resp. Stoichiometric reactions under catalytically relevant conditions provide insight into the stepwise reduction form the CO2 level in carbonates to methanol as final product.

Angewandte Chemie, International Edition published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C23H43NP2, Synthetic Route of 338800-13-8.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem

Gyton, Matthew R.’s team published research in Dalton Transactions in 48 | CAS: 338800-13-8

Dalton Transactions published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C23H43NP2, Recommanded Product: 2,6-Bis((di-tert-butylphosphino)methyl)pyridine.

Gyton, Matthew R. published the artcileA convenient method for the generation of {Rh(PNP)}+ and {Rh(PONOP)}+ fragments: reversible formation of vinylidene derivatives, Recommanded Product: 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, the publication is Dalton Transactions (2019), 48(9), 2877-2880, database is CAplus and MEDLINE.

The substitution reactions of [Rh(COD)2][BArF4] with PNP and PONOP pincer ligands 2,6-bis(di-tert-butylphosphinomethyl)pyridine and 2,6-bis(di-tert-butylphosphinito)pyridine in the weakly coordinating solvent 1,2-F2C6H4 are an operationally simple method for the generation of reactive formally 14 VE rhodium(I) adducts in solution Application of this methodol. enables synthesis of known adducts of CO, N2, H2, previously unknown water complexes, and novel vinylidene derivatives [Rh(pincer)(CCHR)][BArF4] (R = tBu, 3,5-tBu2C6H3), through reversible reactions with terminal alkynes.

Dalton Transactions published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C23H43NP2, Recommanded Product: 2,6-Bis((di-tert-butylphosphino)methyl)pyridine.

Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem