Day: April 2, 2022

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

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

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

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

Computed Properties of C5H2Cl3NO. 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: 2,3,5-Trichloropyridin-4-ol, is researched, Molecular C5H2Cl3NO, CAS is 1970-40-7, about High performance thin layer chromatography of several pesticides and their major environmental by-products.

A high performance thin layer chromatog. (HPTLC) method was developed to sep. and detect atrazine, carbofuran, chlorpyrifos, metolachlor, and some of their important environmental byproducts in experiments involving bioreactors designed to degrade waste pesticide material. All separations were 1-dimensional and consisted of single or dual solvent systems: atrazine and metolachlor required a dual solvent system because of the wide range of byproduct polarity. The F254 indicator present in the HPTLC plates proved to be the best detection method for atrazine, carbofuran, metolachlor, and their byproducts because of sub-microgram sensitivity and the inherent detection step. Chloropyrifos and its byproduct, at ∼0.5 and 0.05 μg of sample, resp., per zone, were better detected by 1-pyrene carboxaldehyde.

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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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Reference:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

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 organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Transformation of 3-isoxazolecarboxylic acids into pyrazole derivatives. IV, published in 1940, which mentions a compound: 13599-22-9, mainly applied to , Synthetic Route of C16H12N2O2.

cf. C. A. 34, 7903.8. The transformation of 3-isoxazolecarboxylic acids into pyrazolonimines by fusion with PhNHNH2 may proceed by decarboxylation followed by ring closure of the resulting cyano ketone phenylhydrazone. To test this hypothesis the fusion was repeated in the presence of Natur Kupfer C (I) (or ordinary reduced Cu) so that, at the lower decarboxylation temperatures it might be possible to isolate the phenylhydrazone prior to ring closure and so shed some light on the mechanism of the reaction. A mixture of 1 g. of 5-phenyl-3-isoxazolecarboxylic acid (II), 1 g. I and 1 g. PhNHNH2 in 20 cc. alc. was boiled for a few min. over a free flame, filtered, alkalinized with Na2CO3, extracted free from PhNHNH2 with ether, acidified with dilute H2SO4, and extracted with ether. The residue from the evaporated extract gave 1,5-diphenyl-3-pyrazolecarboxylic acid (III), m. 185° (Et ester, m. 98°), decarboxylated by fusion to give 1,5-diphenylpyrazole, m. 55°, and identical with the known acid prepared by the action of PhNHNH2 on BzCH2COCO2H. A similar transformation of 5-methyl-3-isoxazolecarboxylic acid (IV) gave 1-phenyl-5-methyl-3-pyrazolecarboxylic acid, m. 136° (Me ester, m. 55°), decarboxylated to 1-phenyl-5-methylpyrazole, transformed into the known picrate, m. 98°. In these transformations alc. can be replaced by other solvents. In the absence of I or in the presence of PhNH2 instead of PhNHNH2 the isoxazolecarboxylic acid is recovered unchanged.

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Isoquinoline – Wikipedia,
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COA of Formula: C12H10N6. 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: 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine, is researched, Molecular C12H10N6, CAS is 1671-88-1, about Novel hybrid spin systems of 7,7′,8,8′-tetracyanoquinodimethane (TCNQ) radical anions and 4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole (abpt). Crystal structure of [Fe(abpt)2(TCNQ)2] at 298 and 100 K, Moessbauer spectroscopy, magnetic properties, and infrared spectroscopy of the series [MII(abpt)2(TCNQ)2] (M = Mn, Fe, Co, Ni, Cu, Zn). Author is Kunkeler, Paul J.; van Koningsbruggen, Petra J.; Cornelissen, Joost P.; van der Horst, Andre N.; van der Kraan, Adri M.; Spek, Anthony L.; Haasnoot, Jaap G.; Reedijk, Jan.

[Fe(abpt)2(TCNQ)2], where TCNQ is the radical anion 7,7′,8,8′-tetracyanoquinodimethane and abpt = 4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole, is an Fe(II) complex containing coordinated radical anions which undergoes a thermally induced spin-crossover with Tc = 280 K. Variable-temperature magnetic susceptibility (7-460 K) and 57Fe Moessbauer spectroscopy data give evidence for a complete S = 2 (high-spin) ↔ S = 0 (low-spin) transition, taking place gradually, without hysteresis. The x-ray structure was determined at 298 K and 100 K. The compound is triclinic, space group P1̅, with a 9.277(2), b 9.876(3), c 12.272(2) Å, α 69.52(2), β 86.92(2), and γ 81.73(2)° at 298 K and a 9.236(2), b 9.684(1), c 12.137(2) Å, α 69.26(1), β 87.53(2), and γ 82.38(1)° at 100 K with Z = 1. Two abpt ligands coordinating via pyridyl-N1A and triazole-N1 are in the equatorial positions. Fe-N1 and Fe-N1A distances are 2.08(1) and 2.12(1) Å for 1 and 2.00(2) and 2.02(1) Å for 2, resp. TCNQ mols. coordinate axially at remarkably short distances i.e., Fe-N1T = 2.16(1) Å for 1 and 1.93(1) Å for 2. The TCNQ mols. are stacked in pairs yielding diamagnetic entities. The FTIR spectra (100-300 K) show that the TCNQ νCN vibrations are a fingerprint for the different spin states. In the isostructural [MII(abpt)2(TCNQ)2] (M = Mn, Fe, Co, Ni, Cu, Zn) compounds, the νCN absorptions show a shift to higher frequencies as a function of the crystal field stabilization energy. Above Tc, the Cu(II)-doped Fe(II) species shows a broad signal with g⊥ = 2.09 and g‖ = 2.25 and hyperfine structure (A‖ = 180 G). At Tc and below, the spectrum becomes better resolved and now shows superhyperfine structure (AN‖ = 16 G; nine lines). Above Tc, the Mn(II)-doped Fe(II) compound shows a very broad signal at g = 2.00. The spectrum sharpens at Tc to give a clearly resolved spectrum corresponding to a magnetically isolated Mn(II) ion in a tetragonal environment. The signal is split by the zero-field splitting, yielding major signals at g = 1.6 and g = 5.5 and six hyperfine lines (A‖ = 80 G) that are clearly visible on both signals.

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Reference:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《A structural investigation of anion-triazole interactions: observation of “”π-pockets”” and “”π-sandwiches””》. Authors are White, Nicholas G.; Kitchen, Jonathan A.; Brooker, Sally.The article about the compound:3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-aminecas:1671-88-1,SMILESS:NN1C(C2=NC=CC=C2)=NN=C1C3=NC=CC=C3).Application In Synthesis of 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine. Through the article, more information about this compound (cas:1671-88-1) is conveyed.

Eight mononuclear nickel(II) complexes of the ligands 4-amino-3,5-di(2-pyridyl)-1,2,4-triazole (adpt) and 4-pyrrolyl-3,5-di(2-pyridyl)-1,2,4-triazole (pldpt) with the anions ClO4-, BF4-, PF6- and SbF6- have been prepared In all cases the metal/ligand ratio is 1:3, and the complexes are of the form [NiL3](A)2·solvents where L = adpt or pldpt and A = one of the aforementioned anions. Five of these complexes have been structurally characterized by x-ray crystallog.: four of these contain pldpt and strong anion-π interactions are observed, with two motifs present in all four structures. One of the anions occupies a “”π-pocket”” formed by two coordinated triazole rings and one coordinated pyridine ring. The other anion only interacts with one triazole ring, which is involved in the pocket around the first anion, such that the triazole ring is “”sandwiched”” by two anions. Surprisingly, in all four of these complexes, the two triazole centroid···anion distances in the anion-triazole-anion interactions [2.917(7)-3.005(10) Å] are significantly shorter than in any of the other types of triazole-anion interactions [3.164(5)-3.456(9) Å].

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Reference:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem