Month: April 2022

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Crystal engineering: Toward intersecting channels from a neutral network with a bcu-type topology, published in 2005-09-19, which mentions a compound: 14389-12-9, Name is 5-(4-Pyridyl)-1H-tetrazole, Molecular C6H5N5, Application of 14389-12-9.

Although the structure of the body centered cubic (bcu) net is commonly found in textbooks, its eight-connected topol. is extremely rare in metal-organic frameworks owing to severe geometric requirements. The 1st example of a highly porous, neutral bcu-type framework, {[Cu3Cl2L4(H2O)2].3DMF.5H2O}n (I), assembled from a unique eight-connected tricopper cluster and a 5-(4-pyridyl)tetrazolate ligand (L-) as linker is reported. I is orthorhombic, space group , Z = 2, R1 = 0.0725, wR2 = 0.0399.

From this literature《Crystal engineering: Toward intersecting channels from a neutral network with a bcu-type topology》,we know some information about this compound(14389-12-9)Application of 14389-12-9, but this is not all information, there are many literatures related to this compound(14389-12-9).

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 1,5-Dibromopentane, is researched, Molecular C5H10Br2, CAS is 111-24-0, about Rational synthesis, structural characterization, theoretical studies, antibacterial activity and selective dye absorption of new silver coordination polymers generated from a flexible bis (imidazole-2-thione) ligand, the main research direction is silver pentadienyl bisdihydroimidazolethione coordination polymer preparation luminescence thermal stability; bactericide luminescence band gap silver pentadienyl bisdihydroimidazolethione coordination polymer; crystal structure silver pentadienyl bisdihydroimidazolethione coordination polymer.Quality Control of 1,5-Dibromopentane.

Herein, a competition between the different anions with different size, shape and coordination ability was used for the synthesis of three silver(I)-coordination polymers (Ag-CPs) was investigated. In this study, three 3D-supra-mol. coordination compounds namely, [Ag2L(NO3)2]n (1), {[Ag2L][PF6]2}n (2) and [AgLBr]n (3) (L = 1,1′-(1,5-pentadienyl)bis-(1,3-dihydro-3-methyl-1H-imidazole-2-thione)) were synthesized and fully characterized via a single crystal X-ray diffraction, powder X-ray diffraction (PXRD), elemental anal. (CHN), FT-IR spectra and thermo gravimetric anal. (TGA). Structural anal. revealed that the counter ions have a notable impact in directing the conformation and coordination mode of ligand, but they have no effect on the structural dimension of the polymers. Furthermore, by increasing the coordination ability of the anions, the coordination geometry of the AgI centers change, from a distorted linear (for 2) to a distorted square pyramidal coordination geometry (for 1). The chains are further stabilized by the intermol. C-H···O and C-H···N for 1, P-F…H-C for 2, C-H···Br and C-H···N interactions for 3 to form a 3D non-covalent lattice network structure. In contrast to 1 and 3, polymer 2 exhibits a large capacity and selectivity to adsorb dye from aqueous solutions Sorption kinetic was investigated by three kinetic models. The electronic band structure and the projection densities of states (PDOS) of compounds 1 and 3 were investigated by means of DFT-D3. The results demonstrated that both compounds are non-magnetic and show a semiconducting character with a direct band gap of ∼3 eV. All of the synthesized compounds, possess antibacterial activity against the selected strain of Gram- neg. (Escherichiacoli, Pseudomonas aeruginosa) and Gram- pos. (Staphylococcus aureus, Bacillus subtilis) bacteria.

From this literature《Rational synthesis, structural characterization, theoretical studies, antibacterial activity and selective dye absorption of new silver coordination polymers generated from a flexible bis (imidazole-2-thione) ligand》,we know some information about this compound(111-24-0)Quality Control of 1,5-Dibromopentane, but this is not all information, there are many literatures related to this compound(111-24-0).

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 3411-48-1, is researched, SMILESS is C1=CC2=C(C=C1)C(=CC=C2)P(C1=CC=CC2=C1C=CC=C2)C1=CC=CC2=C1C=CC=C2, Molecular C30H21PJournal, Russian Journal of Organic Chemistry called Polarity and Conformational Analysis of Tri(1-naphthyl)phosphine, Tri(2-naphthyl)phosphine, and Their Chalcogenides, Author is Kuznetsova, A. A.; Chachkov, D. V.; Belogorlova, N. A.; Kuimov, V. A.; Malysheva, S. F.; Vereshchagina, Ya. A., the main research direction is naphthylphosphine chalcogenide preparation conformational analysis DFT polarity dipole moment; phosphine naphthyl chalcogenide preparation conformational analysis DFT polarity.Synthetic Route of C30H21P.

Abstract: The polarity and structure of tri(1- or 2-naphthyl)phosphines and their chalcogenides were determined by the methods of dipole moments, IR spectroscopy, and DFT quantum-chem. calculations at the B3PW91/6-311++G(df,p) level of theory. In solution, tri(1-naphthyl)phosphine prefers a single conformer with a gauche,gauche,gauche orientation of the substituents at the P. Tri(2-naphthyl)phosphine, as well as both phosphine chalcogenides exist as equilibrium mixtures of several forms with a propeller arrangement of the substituents and a cis or gauche orientation of the Csp2-Csp2 and P=X (X = LEP, O, S, Se) bonds.

From this literature《Polarity and Conformational Analysis of Tri(1-naphthyl)phosphine, Tri(2-naphthyl)phosphine, and Their Chalcogenides》,we know some information about this compound(3411-48-1)Synthetic Route of C30H21P, but this is not all information, there are many literatures related to this compound(3411-48-1).

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 20198-19-0, is researched, SMILESS is O=C1NC(N)=NC2=C1C=CC=C2, Molecular C8H7N3OJournal, Khimiya Geterotsiklicheskikh Soedinenii called Acylation of 2-amino-4-quinazolones unsaturated acyl chlorides, Author is Yun, L. M.; Nazhimov, K. O.; Masharipov, S.; Samiev, R. A.; Makhmudov, S. A.; Kasymova, S. S.; Vergizov, S. N.; V’yunov, K. A.; Shakhidoyatov, Kh. M., the main research direction is acylation aminoquinazolone unsaturated chloride; pyrimidoquinazolinedione; quinazolone amino acylation unsaturated chloride.Safety of 2-Aminoquinazolin-4(3H)-one.

Condensation of quinazolone I by R1CH:CRCOCl (R = Me, R1 = H; R = H, R1 = Me, Ph) in DMF containing Et3N gave 36-70% acylated derivatives II which (R = Me, R1 = H) underwent intramol. cycloaddition at 250-260° to give 43% pyrimidoquinazolinedione III. Addnl. acylations of the 2-Me derivative of I gave 15-49% quinazolones IV.

From this literature《Acylation of 2-amino-4-quinazolones unsaturated acyl chlorides》,we know some information about this compound(20198-19-0)Safety of 2-Aminoquinazolin-4(3H)-one, but this is not all information, there are many literatures related to this compound(20198-19-0).

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Syntheses and material applications of Ru(II)(bisphosphine)2 alkynyls, published in 2021-10-15, which mentions a compound: 1663-45-2, Name is 1,2-Bis(diphenylphosphino)ethane, Molecular C26H24P2, COA of Formula: C26H24P2.

A review. Described in this review are the synthetic methods to produce both mono- and bis-alkynyl Ru(II)(L-L)2 type complexes, where L-L is dppe, dppm, or dmpe. This synthetic tool kit encompasses reactions utilizing trimethylstannyl capped reagents, Ru-alkyl starting materials, or the 16 e- [RuCl(dppe)2]+ intermediate to produce the desired Ru(II)(L-L)2 alkynyl complexes. Advantages and drawbacks of each synthetic approach are touched upon. A brief overview of material applications of these complexes is also provided, highlighting their promises as efficient non-linear optical materials, wire-like mols., mol. wires and switches, and active mols. in dye-sensitized solar cells.

In some applications, this compound(1663-45-2)COA of Formula: C26H24P2 is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, RSC Advances called A comparative study between heterogeneous stannous chloride loaded silica nanoparticles and a homogeneous stannous chloride catalyst in the synthesis of 5-substituted 1H-tetrazole, Author is Kumar, Arvind; Kumar, Satyanand; Khajuria, Yugal; Awasthi, Satish Kumar, which mentions a compound: 14389-12-9, SMILESS is C1(C2=NN=NN2)=CC=NC=C1, Molecular C6H5N5, Formula: C6H5N5.

Heterogeneous SnCl2-nano-SiO2 efficiently catalyzed 5-substituted 1H-tetrazole synthesis with excellent yield. The catalyst was characterized by using FT-IR, TGA, TEM, and EDX. It was widely applicable on aliphatic, aromatic, heteroaromatic and sterically hindered nitriles with five time recyclability. Being simple and an economically viable approach for the synthesis of SnCl2-nano-SiO2 were addnl. advantages.

In some applications, this compound(14389-12-9)Formula: C6H5N5 is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Tetrazole analogs of pyridinecarboxylic acids》. Authors are McManus, J. M.; Herbst, Robert M..The article about the compound:5-(4-Pyridyl)-1H-tetrazolecas:14389-12-9,SMILESS:C1(C2=NN=NN2)=CC=NC=C1).Name: 5-(4-Pyridyl)-1H-tetrazole. Through the article, more information about this compound (cas:14389-12-9) is conveyed.

The isomeric 5-tetrazolylpyridines were prepared as analogs of the pyridinecarboxylic acids by interaction of the cyanopyridines with NH3 (I). Interaction of 2,6-dicyanopyridine (II) and I gave the tetrazole analog (III) of dipicolinic acid. Hydrogenation of the tetrazolylpyridines gave the corresponding 5-tetrazolylpiperidines, the analogs of the several isomeric piperidinecarboxylic acids. 2-Cyanopyridine (26 g.), 20 g. AcOH, and 22 g. NaN3 refluxed 4 days in 100 ml. BuOH, heated 2 days with a further 5 g. NaN3 and 10 g. AcOH (in other experiments 3- and 4-day heating periods gave approx. the same yields), the mixture diluted with 300 ml. H2O, the BuOH removed, the solution acidified, and the product separated gave 33.4 g. 5-(2-pyridyl)tetrazole (IV), m. 211-11.5° (decomposition) (H2O). Similarly, 3-cyanopyridine and I gave 91% 5-(3-pyridyl)tetrazole (V), m. 234-5° (decomposition) (H2O). Likewise, 4-cyanopyridine and I gave 93% 5-(4-pyridyl)tetrazole (VI), m. 253-4° (decomposition). II (27.5 g.) in 100 ml. BuOH refluxed 2 days with 38.2 g. NaN3 and 38 ml. AcOH then 2 days with 10 g. NaN3 and 20 ml. AcOH gave 45.6 g. III, m. 290° (decomposition)(H2O). IV (11 g.) in 150 ml. AcOH shaken 24 hrs. at 50 lb./sq. in. with 250 mg. PtO2 and H gave 10.5 g. 5-(2-piperidyl)tetrazole, m. 287° (decomposition); acetyl derivative m. 135.5-6.5° (H2O). For preparative purposes it was advantageous to form the acetyl derivative directly by hydrogenation of IV and after removal of the catalyst it was treated with Ac2O to give an over-all yield of 84%. V similarly hydrogenated gave an almost quant. yield of 5-(3-piperidyl)tetrazole, m. 296-7°(H2O); acetyl derivative m. 170-1° (iso-PrOH). VI also gave 86% 5-(4-piperidyl)tetrazole, prisms, not decomposing below 370°; acetyl derivative m. 156.5-7.5° (iso-PrOH).

In some applications, this compound(14389-12-9)Name: 5-(4-Pyridyl)-1H-tetrazole is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, ChemPlusChem called Two Six-Connected MOFs with Distinct Architecture: Synthesis, Structure, Adsorption, and Magnetic Properties, Author is Ren, Guo-Jian; Han, Song-De; Liu, Yan-Qing; Hu, Tong-Liang; Bu, Xian-He, which mentions a compound: 14389-12-9, SMILESS is C1(C2=NN=NN2)=CC=NC=C1, Molecular C6H5N5, Computed Properties of C6H5N5.

By assembling CoII ions and a combination of 5-(4-pyridyl)tetrazole (4-ptz) and formate ions, two distinct metal-organic frameworks, [Co3(4-ptz)5(HCOO)(H2O)2] and [Co3(4-ptz)4(DMF)2(HCOO)2] (DMF=N,N’-dimethylformamide), were synthesized. They were both characterized by single-crystal x-ray diffraction, IR spectroscopy, TGA, and powder X-ray diffraction. Structural analyses revealed that by slightly modulating the coordination environment of the trinuclear cobalt cluster, two complexes were formed featuring unusual six-connected nets reminiscent of a pyrazole-type linear trinuclear cobalt cluster as compared with the classic eight-connected bcu topol. In addition, [Co3(4-ptz)5(HCOO)(H2O)2] interacted strongly with CO2, with an adsorption enthalpy of 29.2 kJ mol-1, and in a selectivity study, the uptake ratios of CO2/N2 (from a 15:85 mixture) and CO2/CH4 (50:50 mixture) were 77.6 and 37.7, resp. Magnetic studies on both complexes revealed weak antiferromagnetic coupling between the CoII ions.

In some applications, this compound(14389-12-9)Computed Properties of C6H5N5 is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Application of 3411-48-1. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: Tri(naphthalen-1-yl)phosphine, is researched, Molecular C30H21P, CAS is 3411-48-1, about Pd-catalyzed addition of boronic acids to vinylogous imines: a convenient approach to 3-sec-alkyl substituted indoles.

A convenient approach to 3-sec-alkyl substituted indoles was developed via palladium-catalyzed addition of arylboronic acids to vinylogous imines generated in situ from sulfonylindoles under mild conditions. E.g, in presence of Pd(OAc)2/tri-1-naphthylphosphine/K2CO3, reaction of sulfonylindole (I) with PhB(OH)2 gave 90% 3-sec-alkyl substituted indole (II).

In some applications, this compound(3411-48-1)Application of 3411-48-1 is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Tang, Cen; Ku, Kang Hee; Lennon Luo, Shao-Xiong; Concellon, Alberto; Wu, You-Chi Mason; Lu, Ru-Qiang; Swager, Timothy M. published an article about the compound: 1,2-Bis(diphenylphosphino)ethane( cas:1663-45-2,SMILESS:P(CCP(C1=CC=CC=C1)C2=CC=CC=C2)(C3=CC=CC=C3)C4=CC=CC=C4 ).COA of Formula: C26H24P2. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:1663-45-2) through the article.

The capping reagent plays an essential role in the functional properties of gold nanoparticles (AuNPs). Multiple stimuli-responsive materials are generated via diverse surface modification. The ability of the organic ligand shell on a gold surface to create a porous shell capable of binding small mols. is demonstrated as an approach to detect mols., such as methane, that would be otherwise difficult to sense. Thiols are the most studied capping ligands of AuNPs used in chemiresistors. Phosphine capping groups are usually seen as stabilizers in synthesis and catalysis. However, by virtue of the pyramidal shape of triarylphosphines, they are natural candidates to create intrinsic voids within the ligand shell of AuNPs. In this work, surface-functionalized (capped) AuNPs with chelating phosphine ligands are synthesized via two synthetic routes, enabling chemiresistive methane gas detection at sub-100 ppm levels. These AuNPs are compared to thiol-capped AuNPs, and studies were undertaken to evaluate structure-property relationships for their performance in the detection of hydrocarbons. Polymer overcoatings applied to the conductive networks of the functionalized AuNP arrays were shown to reduce resistivity by promoting the formation of conduction pathways with decreased core-core distance between nanoparticles. Observations made in the context of developing methane sensors provide insight relevant to applications of phosphine or phosphine-containing surface groups in functional AuNP materials.

In some applications, this compound(1663-45-2)COA of Formula: C26H24P2 is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis