Tag: M.W:200-300

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Methyl 5-methoxyindole-2-carboxylate, is researched, Molecular C11H11NO3, CAS is 67929-86-6, about Optimization of Chemical Functionalities of Indole-2-carboxamides To Improve Allosteric Parameters for the Cannabinoid Receptor 1 (CB1).SDS of cas: 67929-86-6.

5-Chloro-3-ethyl-N-(4-(piperidin-1-yl)phenethyl)-1H-indole-2-carboxamide (ORG27569) is a prototypical allosteric modulator for the cannabinoid type 1 receptor (CB1). Here, we reveal key structural requirements of indole-2-carboxamides for allosteric modulation of CB1: a critical chain length at the C3-position, an electron withdrawing group at the C5-position, the length of the linker between the amide bond and the Ph ring B, and the amino substituent on the Ph ring B. These significantly impact the binding affinity (KB) and the binding cooperativity (α). A potent CB1 allosteric modulator 5-chloro-N-(4-(dimethylamino)phenethyl)-3-propyl-1H-indole-2-carboxamide was identified. It exhibited a KB of 259.3 nM with a strikingly high binding α of 24.5. We also identified 5-chloro-N-(4-(dimethylamino)phenethyl)-3-hexyl-1H-indole-2-carboxamide with a KB of 89.1 nM, which is among the lowest KB values obtained for any allosteric modulator of CB1. These pos. allosteric modulators of orthosteric agonist binding nonetheless antagonized the agonist-induced G-protein coupling to the CB1 receptor, yet induced β-arrestin mediated ERK1/2 phosphorylation.

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Reference:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

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 Probing the dinucleating behavior of a bis-bidentate ligand: synthesis and characterization of some di- and mononuclear cobalt(II), nickel(II), copper(II) and zinc(II) complexes of 3,5-di(2-pyridyl)-4-(1H-pyrrol-1-yl)-4H-1,2,4-triazole, published in 2006-02-06, which mentions a compound: 1671-88-1, Name is 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine, Molecular C12H10N6, Synthetic Route of C12H10N6.

As a probe of the dinucleating ability of the known but little studied bis-bidentate ligand 3,5-di(2-pyridyl)-4-(1H-pyrrol-1-yl)-4H-1,2,4-triazole (pldpt), its reactivity towards MX2·6H2O (M = CoII, NiII and ZnII; X = ClO4- and BF4-) as well as Cu(ClO4)2·6H2O in a 1:1 metal-to-ligand molar ratio in MeCN has been investigated. In the case of CoII, NiII and ZnII, these reactions gave dinuclear complexes MII2(pldpt)2X4(MeCN)m(H2O)n whereas for CuII the mononuclear complex [CuII(pldpt)2(ClO4)2] initially was isolated, followed by the dinuclear complex [CuII2(pldpt)2(MeCN)2(H2O)2](ClO4)4. The use of the strongly polar aprotic co-solvent DMF resulted in the partial breakdown of the initial dinuclear entities in the case of CoII and NiII but not in the case of ZnII. In all five of the structurally characterized dinuclear complexes the (N’,N1,N2,N”)2 double-bridging coordination mode is realized with distorted octahedral N4Y2-coordinated metal centers (Y = DMF, H2O or MeCN). The two mononuclear complexes feature the common trans-(N’,N1)2 coordination mode with axial DMF or ClO4- co-ligands. The near-perpendicular orientation [82.4(3)-88.8(1)°] of the π-electron-rich 4-(1H-pyrrol-1-yl) substituent with respect to the triazole ring of pldpt observed in all of these structures means that no π-interactions are expected between these rings and electronic interaction is likely to be small. Whether a di- or mononuclear complex of pldpt forms is therefore primarily determined by a number of other factors including the reaction stoichiometry, the nature of the counterions and the solvent as well as the relative solubility of the various possible products. Clearly the nature of the N4 substituent can have a major impact on the last of these factors. Magnetic studies carried out on the dinuclear complexes revealed that the triazole bridges mediate relatively weak antiferromagnetic coupling between the two metal centers.

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Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Formula: C12H10N6. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine, is researched, Molecular C12H10N6, CAS is 1671-88-1, about Towards Langmuir-Blodgett films of magnetically interesting materials: solution equilibria in amphiphilic iron(II) complexes of a triazole-containing ligand. Author is White, Nicholas G.; Feltham, Humphrey L. C.; Gandolfi, Claudio; Albrecht, Martin; Brooker, Sally.

As a first step towards amphiphilic spin crossover (SCO) systems where the hydrophobic part of the system is introduced by a non-coordinating anion (i.e. where no modification of the ligands to introduce hydrophobic substituents is required), [FeII(OH2)2(C16SO3)2] and [CoII(OH2)2(C16SO3)2] have been prepared and reacted with the triazole-containing ligands adpt and pldpt (C16SO3 = hexadecanesulfonate anion, adpt = 4-amino-3,5-bis(2-pyridyl)-1,2,4-triazole, pldpt = 4-pyrrolyl-3,5-bis(2-pyridyl)-1,2,4-triazole). In the solid state, two HS complexes of the form [FeII(Rdpt)2(C16SO3)2] and two of the form [CoII(Rdpt)2(CH3OH)2](C16SO3)2 are obtained, even when a six-fold excess of ligand is used (Rdpt = adpt or pldpt). In solution, the cobalt complexes remain in this form as evidenced by color, Visible/NIR and IR spectroscopy. For the iron complexes, there is an equilibrium in solution between the neutral high-spin form of the complex [FeII(Rdpt)2(C16SO3)2] and the dicationic low-spin tris form [FeII(Rdpt)3](C16SO3)2. Polar solvents favor the dicationic form, while less polar solvents favor the neutral form (as evidenced by solution color and solution IR spectroscopy). Visible/NIR spectroscopy and Evans’ method NMR spectroscopy show the equilibrium can be shifted towards the [FeII(Rdpt)3](C16SO3)2 form by adding addnl. ligand to the solution The X-ray crystal structures of [FeII(adpt)2(C16SO3)2] and [CoII(adpt)2(CH3OH)2](C16SO3)2·1.33CH3OH are presented. [FeII(adpt)2(C16SO3)2] has a 2D bilayer structure with alternating layers of polar Fe(adpt)2 centers, and hydrophobic alkyl chains. The complex cations in [CoII(adpt)2(CH3OH)2](C16SO3)2·1.33CH3OH form 1-D columns in the solid state. The capacity of the amphiphilic complexes [FeII(pldpt)2(C16SO3)2] and [FeII(adpt)2(C16SO3)2] to self-assemble has been probed at the air-water interface using Langmuir techniques. The pertinent pressure-area isotherms reveal only a low tendency of the complexes to form films.

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Reference:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine( cas:1671-88-1 ) is researched.Recommanded Product: 1671-88-1.Dupouy, Gaelle; Triki, Smail; Marchivie, Mathieu; Cosquer, Nathalie; Gomez-Garcia, Carlos J.; Pillet, Sebastien; Bendeif, El-Eulmi; Lecomte, Claude; Asthana, Saket; Letard, Jean-Francois published the article 《Cyanocarbanion-Based Spin-Crossover Materials: Photocrystallographic and Photomagnetic Studies of a New Iron(II) Neutral Chain》 about this compound( cas:1671-88-1 ) in Inorganic Chemistry. Keywords: iron cyanocarbanion aminobispyridyltriazole coordination polymer preparation spin crossover; crystal structure iron cyanocarbanion aminobispyridyltriazole coordination polymer; LIESST iron cyanocarbanion aminobispyridyltriazole coordination polymer; photomagnetic study iron cyanocarbanion aminobispyridyltriazole coordination polymer. Let’s learn more about this compound (cas:1671-88-1).

A new Fe(II) chain [Fe(abpt)2(tcpd)] [1; (tcpd)2- = [C10N6]2- = (C[C(CN)2]3)2- = 2-dicyanomethylene-1,1,3,3-tetracyanopropanediide anion, abpt = 4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole] was synthesized and characterized by IR spectroscopy, detailed variable-temperature single-crystal x-ray diffraction, and magnetic and photomagnetic measurements. The crystal structure determination of 1 reveals a 1-dimensional structural architecture in which the (tcpd)2- cyanocarbanion acts as a μ2-bridging ligand and the two abpt mols. act as chelating ligands. Detailed x-ray diffraction studies as a function of the temperature (293-10 K) showed a strong modification of the Fe coordination sphere, whose characteristics are in agreement with the presence of a spin-crossover transition from high spin (HS) to low spin (LS) in 1. The average Fe-N distances at room temperature, at 10 K following a flash cooling, and at 10 K after subsequent HS-to-LS relaxation are in the range expected for 100%, 50%, and 25% fractions of HS FeII, resp. These observations are consistent with the presence of ∼25% residual HS species at low temperatures, as derived from the magnetic data. The signature of a photoinduced metastable HS state in 1 was detected by performing coupled photomagnetic and photocrystallog. analyses. The limiting T(LIESST) value associated with the light-induced excited-spin-state trapping effect was derived as 35 K, in good agreement with the thermal dependence of the unit cell volume upon irradiation Kinetic studies governing the photoinduced HS/LS process were recorded at different temperatures; a reverse-LIESST effect was evidenced at 10 K as a reduction of the residual HS fraction by irradiating the sample at 830 nm.

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Reference:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Related Products of 1671-88-1. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine, is researched, Molecular C12H10N6, CAS is 1671-88-1, about A quest for supramolecular gelators: silver(I) complexes with quinoline-urea derivatives. Author is Braga, Dario; d’Agostino, Simone; D’Amen, Eros; Grepioni, Fabrizia; Genovese, Damiano; Prodi, Luca; Sgarzi, Massimo.

The quinoline urea derivatives 1,3-di(quinolin-5-yl)urea (DQ5U), 1-phenyl-3-(quinolin-6-yl)urea (PQ6U), 1-(isoquinolin-5-yl)-3-phenylurea (PiQ5U) and 1-phenyl-3-(3,5-bis(pyrid-2-yl)-1,2,4-triazol-4-yl)urea (PPT4U) were synthesized and structurally characterized by powder and single crystal x-ray diffraction. Their gelator behavior in the formation of Ag-complexes was explored. Compound DQ5U proved capable of gelating the mixed solvent EtOH-DMF 1 : 2 (volume/volume) when mixed with 1 equiv of AgNO3. In the case of PQ6U, two polymorphic forms of [Ag(PQ6U)2]NO3, plus the solvated form [Ag(PQ6U)2]NO3·CH3CN, were crystallized Photophys. characterization of the ligands was conducted in solution, while fluorescence microscopy was used to examine the microstructure and photophys. properties of the gels formed by PQ5U and DQ5U with AgNO3.

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Reference:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Synthetic Route of C12H10N6. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine, is researched, Molecular C12H10N6, CAS is 1671-88-1, about trans-Bis[4-amino-3,5-bis(2-pyridyl)-4H-1,2,4-triazole-κN 3]diaquacobalt(II) bis(3-carboxy-5-nitrobenzoate). Author is Wang, Xi; Shao, Chun-Fu; Li, Cheng-Peng.

The title complex, [Co(C12H10N6)2(H2O)2](C8H4NO6)2, is composed of a mononuclear Co(II) cation and two 3-carboxy-5-nitrobenzoate anions for charge balance. In the cation, the CoII atom is six-coordinated in a distorted octahedral geometry. It bonds to two O atoms of two H2O mols., and two pairs of N atoms from two 4-amino-3,5-bis(2-pyridyl)-4H-1,2,4-triazole mols., which behave as bidentate chelating ligands. There are intramol. N-H···N H bonds in the cation. In the crystal, there are a number of intermol. N-H···O and O-H···O H bonds, as well as intermol. π-π stacking interactions [centroid-centroid distances = 3.657(2)and 3.847(2) Å], that link the mols. into two-dimensional networks lying parallel to the ab plane. The presence of C-H···O interactions gives a three-dimensional network. Crystallog. data and at. coordinates are given.

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Reference:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

COA of Formula: C9H6BrNS. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 2-(5-Bromothiophen-2-yl)pyridine, is researched, Molecular C9H6BrNS, CAS is 123784-07-6, about Cyclometalated Platinum-Containing Diketopyrrolopyrrole Complexes and Polymers: Photophysics and Photovoltaic Applications. Author is Goswami, Subhadip; Hernandez, Jeff L.; Gish, Melissa K.; Wang, Jiliang; Kim, Bethy; Laudari, Amrit P.; Guha, Suchismita; Papanikolas, John M.; Reynolds, John R.; Schanze, Kirk S..

Organometallic complexes and polymers were synthesized with an objective of studying their fundamental photophys. properties together with their organic photovoltaic and organic field-effect transistor properties. The metal chromophores consist of a diketopyrrolopyrrole (DPP) core, end functionalized with cyclometalated platinum auxochrome. The photophys. properties of the metal complex and polymers are compared with the unmetalated chromophore DPP-C8-Th-Py. The polymers Poly-DPP-Th-Pt and Poly-DPP-Ph-Pt differ structurally in their cyclometallating ligands, where they consist of 2-thienylpyridine and 2-phenylpyridine, resp. Efficient solar spectrum coverage was observed for all chromophores; specifically, the polymer Poly-DPP-Th-Pt has an onset of absorption at ∼900 nm with an optical band gap of 1.4 eV. The triplet excited state was detected for all chromophores and probed by both nanosecond and picosecond transient absorption spectroscopy. Both polymers were employed as donors in bulk-heterojunction solar cells with a polymer:PC71BM ratio of 1:7. The thiophene-containing polymer Poly-DPP-Th-Pt shows a respectable power conversion efficiency (PCE) of 1.66% with a high fill factor (FF) of ∼66%. Higher charge carrier mobility was observed for Poly-DPP-Th-Pt when used in field-effect transistors compared to Poly-DPP-Ph-Pt.

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Reference:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine, is researched, Molecular C12H10N6, CAS is 1671-88-1, about Mono- and polynuclear complexes of Pt(II) with polypyridyl ligands, the main research direction is platinum complex pyridyl nitrogen heterocycle preparation antitumor activity.Related Products of 1671-88-1.

An array of poly- and mononuclear complexes of Pt(II) with polypyridyl ligands is reported. The framework complexes [(PtCl2)2(bpp)2(μ-PtCl2)](H2O)2 [bpp = 2,3-bis(2-pyridyl)pyrazine], [PtCl2(μ-tptz)PtClNCPh]Cl [tptz = 2,4,6-tris(2-pyridyl)-1,3,5-triazine], and mononuclear PtCl2(NH2dpt) [NH2dpt = 4-amino-3,5-bis(2-pyridyl)-1,2,4-triazole] were prepared and structurally characterized by IR and NMR spectroscopies. Both neutral and ionic complexes are present, with bifunctional and monofunctional Pt(II) moieties, whose size and shape enable them to behave as novel scaffolds for DNA binding. Pt(II) complexes were tested for their biol. activity. Cell viability assay and flow cytometric anal. demonstrated that these complexes, particularly [PtCl2(μ-tptz)PtClNCPh]Cl, were effective death inducers in human colon rectal carcinoma HT29 cells and their cytotoxic activity was higher than that exerted by cisplatin. Morphol. anal. of treated HT29 cells, performed by fluorescence microscopy after Hoechst 33258 staining, showed the appearance of the typical features of apoptosis. Also, results suggested that mitochondria are involved in apoptosis induced by Pt(II) complexes in HT29 cells as demonstrated by dissipation of mitochondrial transmembrane potential.

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Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

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, Photochemical & Photobiological Sciences called Synthesis and photophysical properties of pyridyl conjugated triazole appended naphthalenediimide derivatives, Author is Kumar, Girijesh; Guda, Ramu; Husain, Ahmad; Patra, Ranjan; Kirandeep; Kasula, Mamatha, which mentions a compound: 1671-88-1, SMILESS is NN1C(C2=NC=CC=C2)=NN=C1C3=NC=CC=C3, Molecular C12H10N6, Formula: C12H10N6.

A series of three substituted triazole appended naphthalenediimide (NDI)-derivatives, 2,7-bis(3,5-di(pyridin-X-yl)-4H-1,2,4-triazol-4-yl)benzo[lmn][3,8]phenanthroline-1,3,6,8(2H,7H)-tetraones (where X = 2, NDI-PyTz-1; 3, NDI-PyTz-2; and 4, NDI-PyTz-3), were designed, synthesized and well characterized using various anal. and spectroscopic techniques. All the three NDI-PyTz derivatives exhibited decent electronic properties as suggested by DFT, cyclic voltammetry and fluorescence studies. In particular, NDI-PyTz-1 demonstrated the generation of a stable anion radical [NDI-PyTz-1].-.

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Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Safety of Diphenyl-2-pyridylphosphine. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Diphenyl-2-pyridylphosphine, is researched, Molecular C17H14NP, CAS is 37943-90-1, about P∩N bridged Cu(I) dimers featuring both TADF and phosphorescence. From overview towards detailed case study of the excited singlet and triplet states. Author is Hofbeck, Thomas; Niehaus, Thomas A.; Fleck, Michel; Monkowius, Uwe; Yersin, Hartmut.

We present an overview over eight brightly luminescent Cu(I) dimers of the type Cu2X2(P∩N)3 with X = Cl, Br, I and P∩N = 2-diphenylphosphino-pyridine (Ph2Ppy), 2-diphenylphosphino-pyrimidine (Ph2Ppym), 1-diphenylphosphino-isoquinoline (Ph2Piqn) including three new crystal structures (Cu2Br2(Ph2Ppy)31-Br, Cu2I2(Ph2Ppym)32-I and Cu2I2(Ph2Piqn)33-I). However, we mainly focus on their photo-luminescence properties. All compounds exhibit combined thermally activated delayed fluorescence (TADF) and phosphorescence at ambient temperature Emission color, decay time and quantum yield vary over large ranges. For deeper characterization, we select Cu2I2(Ph2Ppy)3, 1-I, showing a quantum yield of 81%. DFT and SOC-TDDFT calculations provide insight into the electronic structures of the singlet S1 and triplet T1 states. Both stem from metal+iodide-to-ligand charge transfer transitions. Evaluation of the emission decay dynamics, measured from 1.2 ≤ T ≤ 300 K, gives ΔE(S1-T1) = 380 cm-1 (47 meV), a transition rate of k(S1→S0) = 2.25 x 106 s-1 (445 ns), T1 zero-field splittings, transition rates from the triplet substates and spin-lattice relaxation times. We also discuss the interplay of S1-TADF and T1-phosphorescence. The combined emission paths shorten the overall decay time. For OLED applications, utilization of both singlet and triplet harvesting can be highly favorable for improvement of the device performance.

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Reference:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem