Category: 1671-88-1

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 Structural and magnetic characterization of one-dimensional oxalato-bridged metal(II) complexes with 4-amino-3,5-bis(2-pyridyl)-1,2,4-triazole ligand: A supramolecular open-framework, the main research direction is transition metal amino pyridyl triazole complex crystal structure magnetism.Recommanded Product: 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine.

A new family of 1-dimensional oxalato-bridged metal(II) complexes {[M(ox)(abpt)]·4H2O}n [MII = Mn (1), Fe (2), Co (3), Zn (4); ox = oxalate dianion; abpt = 4-amino-3,5-bis(2-pyridyl)-1,2,4-triazole] was synthesized and chem., structurally and magnetically characterized. The crystal structures of compounds 2-4 were solved by single crystal x-ray diffraction, whereas complex 1 was studied by X-ray powder diffraction methods. All of them are isomorphous and crystallize in the triclinic space group P1. The metal atoms are bridged by bis-bidentate oxalate anions forming zigzag chains in which bidentate chelating abpt ligands complete the octahedral O4N2 donor set. The crystal structures show an open-framework that contains rectangular channels in which easily removable hydrogen bonded ribbons of water mols. are located. The occurrence of antiferromagnetic intrachain interactions for compounds 1-3 was determined by cryomagnetic susceptibility measurements.

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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 Syntheses and crystal structures of two new cobalt(II) complexes derived from 3,5-bis(pyridin-2-yl)-4-amino-1,2,4-triazole, published in 2006-11-30, which mentions a compound: 1671-88-1, mainly applied to cobalt pyridinyl aminotriazole triazolate thiocyanate complex preparation structure; crystal structure cobalt pyridinyl aminotriazole triazolate thiocyanate complex, Recommanded Product: 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine.

Two different cobalt(II) complexes were synthesized from room-temperature solution reaction or solvothermal reaction of CoCl2, KSCN, 3,5-bis(pyridin-2-yl)-4-amino-1,2,4-triazole (abpt) and MeOH. X-ray crystallog. shows that the product obtained at ambient temperature, [Co(abpt)2(SCN)2], is a mononuclear species, while the product obtained by solvothermal method, [Co2(bpt)2(SCN)2(MeOH)2], is a dinuclear complex incorporating an in situ deaminated ligand.

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Recommanded Product: 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 Engineering Solid-State Molecular Switches: N-Salicylidene N-Heterocycle Derivatives. Author is Robert, Francois; Naik, Anil D.; Hidara, Florence; Tinant, Bernard; Robiette, Raphael; Wouters, Johan; Garcia, Yann.

A supramol. engineering approach has been developed for a novel family of N-salicylidene aniline derivatives to control their thermo- and photochromic behaviors. Hsaltrz, Habs, Hsalphen, Hsaltz and Ksaltz are versatile mols. built from N-heterocycles, which drive the mol. arrangement to form a controlled crystal packing with predesigned optical properties. A complete structural, optical and computational study of powders of these new mol. nanoswitches is presented. An N-salicylidene aniline derivative possessing no thermo- or photoinduced chromic properties thanks to a specific mol. geometry was sought, and Habs and Hsalphen were designed to enhance π-π stacking interactions. A theor. study of the crystal packing, combined with time-dependent diffuse reflectance studies of Habs, have confirmed the appearance of photochromism at room temperature completed with an unprecedented “”spring-type effect”” observed during the photochem. relaxation of the metastable trans-keto form. The absence of thermochromism in an N-salicylidene aniline derivative, induced by the absence of cis-keto form, is a unique behavior, firstly identified and explained for these types of compounds Finally, Hsaltz and Ksaltz are the result of a mol. derivation of Hsaltrz which allow enhancing the amplitude of thermochromism of these functional materials.

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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, Dalton Transactions called Magnetic fluorescent bifunctional spin-crossover complexes, Author is Wang, Jun-Li; Liu, Qiang; Lv, Xiao-Jin; Wang, Rui-Lin; Duan, Chun-Ying; Liu, Tao, which mentions a compound: 1671-88-1, SMILESS is NN1C(C2=NC=CC=C2)=NN=C1C3=NC=CC=C3, Molecular C12H10N6, SDS of cas: 1671-88-1.

The rational design of magnetic and fluorescent bifunctional materials is attracting increasing interest. Two mononuclear Fe(II) complexes, [Fe(L)2(NCS)2] (1) and [Fe(L)2(NCSe)2] (2) were synthesized by combining a spin-crossover unit and a fluorescent ligand (naphth-1-yl)-N-(3,5-di(pyridin-2-yl)-4H-1,2,4-triazol-4-yl)methanimine (L) to achieve bifunctionality. Single-crystal x-ray studies and magnetic measurements confirm the presence of spin crossover behaviors; these measurements agree with the results of the temperature depended Raman spectra and IR spectra. Thermally and light-induced spin crossover is clearly observed for both complexes. The nature of the co-ligand (NCS-vs. NCSe-) shifts the transition temperature by ∼60 K. The IR spectra after irradiation reveal that the electronic states are ascribable to the photomagnetic effect at 10 K. Also, temperature-dependent fluorescence emission spectra exhibit the coexistence of spin crossover and fluorescence for 1 and 2. CCDC 149622611496229.

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Related Products of 1671-88-1. Aromatic compounds can be divided into two categories: single heterocycles and fused 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 Synthesis, structure and electrochemistry of a novel dinuclear cobalt(II) complex containing pyrrole units: an unusual reductive electropolymerization of the dinuclear cobalt(II) complex. Author is Mandal, Sanat K.; Clase, Howard J.; Bridson, John N.; Ray, Soma.

4-(1H-pyrrole-1-yl)-3,5-bis(pyridine-2-yl)-1,2,4-triazole (L) was prepared and used to prepare [Co2L2(H2O)4]Cl4.2MeOH.2H2O which was characterized by elemental anal., x-ray crystallog., and electrochem. The complex undergoes reductive electropolymerization, forming films on a glassy carbon electrode. The polymer is fairly conductive (∼2 × 10-6 Ω-1 cm-1 at -1.40 V vs. SCE). Electroreduction of CO2 occurs at the polymer film-modified electrode.

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Gupta, Gajendra; Prasad, Kota Thirumala; Das, Babulal; Rao, Kollipara Mohan published an article about the compound: 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine( cas: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. 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:1671-88-1) through the article.

A quite general approach for the preparation of η5-and η6-cyclic hydrocarbon platinum group metal complexes is reported. The dinuclear arene ruthenium complexes [(η6-arene)Ru(μ-Cl)Cl]2 (arene = C6H6, C10H14 and C6Me6) and η5-pentamethylcyclopentadienyl rhodium and iridium complexes [(η6-C5Me5)M(μ-Cl)Cl]2 (M = Rh, Ir) react with 2 equivalent of 4-amino-3,5-di-pyridyltriazole (dpt-NH2) in presence of NH4PF6 to afford the corresponding mononuclear complexes of the type [(η6-arene)Ru(dpt-NH2)Cl]PF6 {arene = C10H14 (1), C6H6 (2) and C6Me6 (3)} and [(η6-C5Me5)M(dpt-NH2)Cl]PF6 {M = Rh (4), Ir (5)}. However, the mononuclear η5-cyclopentadienyl analogs such as [(η5-C5H5)Ru(PPh3)2Cl], [(η5-C5H5)Os(PPh3)2Br], [(η5-C5Me5)Ru(PPh3)2Cl] and [(η5-C9H7)Ru(PPh3)2Cl] complexes react in presence of 1 equivalent of dpt-NH2 and 1 equivalent of NH4PF6 in methanol yielded mononuclear complexes [(η5-C5H5)Ru(PPh3)(dpt-NH2)]PF6 (6), [(η5-C5H5)Os(PPh3)(dpt-NH2)]PF6 (7), [(η5-C5Me5)Ru(PPh3)(dpt-NH2)]PF6 (8) and [(η5-C9H7)Ru(PPh3)(dpt-NH2)]PF6 (9), resp. These compounds have been totally characterized by IR, NMR and mass spectrometry. The mol. structures of 4 and 6 have been established by single crystal x-ray diffraction and some of the representative complexes have also been studied by UV-Vis spectroscopy.

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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: 1671-88-1, is researched, SMILESS is NN1C(C2=NC=CC=C2)=NN=C1C3=NC=CC=C3, Molecular C12H10N6Journal, Polyhedron called Spin crossover (SCO) iron(II) coordination polymer chain: Synthesis, structural and magnetic characterizations of [Fe(abpt)2(μ-M(CN)4)] (M = PtII and NiII), Author is Setifi, Fatima; Charles, Catherine; Houille, Sylvie; Thetiot, Franck; Triki, Smail; Gomez-Garcia, Carlos J.; Pillet, Sebastien, the main research direction is iron platinum nickel dinuclear cyanide pyridinyltriazole coordination polymer preparation; crystal structure dinuclear iron platinum nickel cyanide coordination polymer; spin crossover heterodinuclear iron cyanide pyridinyltriazole coordination polymer chain.Safety of 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine.

New Fe(II) coordination polymeric neutral chains [Fe(abpt)2(μ-M(CN)4)], with M = PtII (1), NiII (2) and abpt = 4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole, were synthesized and characterized by IR spectroscopy, x-ray diffraction and magnetic measurements. The two compounds are isostructural as deduced from a Rietveld anal. of x-ray powder diffraction data of 2 simulated from the single crystal structure of 1. The crystal packing of 1 is formed by regular chains running along the crystallog. [-1 0 1] direction where the planar [Pt(CN)4]2- anion acts as a μ2-bridging ligand via two N atoms of two different trans cyano groups, while the two abpt mols. act as chelating ligands. Along the neutral chains, the Fe···Pt distances are imposed by the cyano groups of the [Pt(CN)4]2- moiety (5.027 and 5.022 Å at 294 and 150 K, resp.), leading to Fe···Fe intrachain distances of 10.055 and 10.045 Å at 294 and 150 K, resp. The thermal dependence of the product of the molar magnetic susceptibility times the temperature (χmT) for compound 1 shows a constant value close to 0.2 emu K mol-1 in the temperature range 10-300 K in the cooling and warming scans. Above 300 K, compound 1 shows a SCO transition from the LS to the HS configuration although the transition is not fully achieved at 400 K.

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Hua, Jia; Gao, Lu; Li, Baiyan published the article 《Bis(4-amino-3,5-di-2-pyridyl-1,2,4-triazole-κ2N1,N5)diaquazinc(II) dinitrate》. Keywords: crystal structure zinc aminodipyridyltriazole aqua complex dinitrate; mol structure zinc aminodipyridyltriazole aqua complex nitrate; hydrogen bond zinc aminodipyridyltriazole aqua complex dinitrate; pyridyltriazole aminodi zinc aqua complex dinitrate; triazole aminodipyridyl zinc aqua complex dinitrate.They researched the compound: 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine( cas:1671-88-1 ).HPLC of Formula: 1671-88-1. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:1671-88-1) here.

The asym. unit of bis(4-amino-3,5-di-2-pyridyl-1,2,4-triazole-κ2N1,N5)diaquazinc(2+) dinitrate, [Zn(C12H10N6)2(H2O)2](NO3)2, contains 1/2 of the complex mol. and 1 NO3-. The ZnII ion displays a distorted tetragonal-pyramidal geometry with 4 N atoms from 2 chelating 4-amino-3,5-di-2-pyridyl-1,2,4-triazole (2-bpt) ligands in the basal plane and 1 H2O mol. occupying the apical site. Another H2O mol. at the opposite of the apical site has a weak interaction with the ZnII ion [Zn-O = 2.852(5) Å]. The ZnII ion and the 2 H2O mols. lie on a 2-fold rotation axis. An extensive system of H bonds involving the NH2 groups of the 2-bpt ligands, H2O mols. and nitrate anions links all residues into a 3-dimensional network. Crystallog. data are given.

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Quality Control of 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine, is researched, Molecular C12H10N6, CAS is 1671-88-1, about The Key Role of the Intermolecular π-π Interactions in the Presence of Spin Crossover in Neutral [Fe(abpt)2A2] Complexes (A = Terminal Monoanion N Ligand). Author is Dupouy, Gaelle; Marchivie, Mathieu; Triki, Smail; Sala-Pala, Jean; Salaun, Jean-Yves; Gomez-Garcia, Carlos J.; Guionneau, Philippe.

New Fe(II) complexes [Fe(abpt)2(tcm)2] (1), [Fe(abpt)2(tcnome)2] (2), and [Fe(abpt)2(tcnoet)2] (3) (abpt = 4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole, tcm- = [C(CN)3]- = tricyanomethanide anion; tcnome- = [(NC)2CC(OCH3)C(CN)2]- = 1,1,3,3-tetracyano-2-methoxypropenide anion; tcnoet- = [(NC)2CC(OC2H5)C(CN)2]- = 1,1,3,3-tetracyano-2-ethoxypropenide anion) were synthesized and characterized by IR spectroscopy, magnetic properties and by variable-temperature single-crystal x-ray diffraction. The crystal structure determinations of 1 and 2 reveal in both cases centrosym. discrete Fe(II) monomeric structures in which two abpt chelating ligands stand in the equatorial plane and two terminal polynitrile ligands complete the distorted octahedral environment in trans positions. For 3, the crystallog. studies revealed two polymorphs, 3-A and 3-B, exhibiting similar discrete mol. structures to those found for 1 and 2 but with different mol. arrangements. In agreement with the variable-temperature single-crystal x-ray diffraction, the magnetic susceptibility measurements, performed in the temperature range 2-400 K, showed a spin-crossover phenomenon above room temperature for complexes 1, 3-A, and 3-B with a T1/2 of 336, 377, and 383 K, resp., while complex 2 remains in the high-spin ground state (S = 2) in the whole temperature range. To understand further the magnetic behaviors of 1, 3-A, and 3-B, single-crystal x-ray diffraction measurements were performed at high temperatures The crystal structures of both polymorphs could not be obtained >400 K because the crystals decomposed However, single-crystal x-ray data were collected for compound 1, which reaches the full high-spin state at lower temperatures Its crystal structure, solved at 400 K, showed a strong modification of the Fe coordination sphere (average Fe-N = 2.157(3) Å vs. 1.986(3) Å at 293 K). In agreement with the magnetic properties. Such structural behavior is a signature of the spin-state transition from low-spin (LS) to high-spin (HS). From the intermol. π stacking observed for the series described in this paper and for related complexes involving similar discrete structures, complexes displaying frontal π stacking present spin transition such as 1, 3-A, and 3-B and those involving sideways π stacking such as complex 2 remain in the HS state.

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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: 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine, is researched, Molecular C12H10N6, CAS is 1671-88-1, about “”Tail”” Tuning of Iron(II) Spin Crossover Temperature by 100 K.COA of Formula: C12H10N6.

Two new Rdpt ligands featuring long tails, padpt (N-4H-1,2,4-triazole-3,5-di(2-pyridyl)palmitamide) and hpdpt (4-(4-heptadecafluoroctylphenyl)-3,5-bis(2-pyridyl)-4H-1,2,4-triazole), were made and reacted with [FeII(py)4(NCS)2] to give pinkish-red [FeII(padpt)2(SCN)2] (1) and purple-red [FeII(hpdpt)2(SCN)2] (2) as solvent-free crystals. Magnetic measurements reveal that both 1 and 2 exhibit complete and reproducible spin crossovers, with a far lower T1/2 for the amide-alkyl tailed 1 (182 K) than for the fluorocarbon tailed 2 (248 K), which in turn is far lower than the T1/2 of 290 K previously reported for the nonamide-alkyl tailed analog [FeII(C16dpt)2(SCN)2]·2/3H2O (3). Structure determinations for 1 and 2 in both the high spin (HS) and low spin (LS) states confirm the expected trans-NCS conformation and reveal that (a) the tails interdigitate and (b) the LS forms are less distorted than the HS forms (Σ = 58-70° vs. 47-54°). DSC and Raman spectroscopy confirmed the high tail-dependence of the SCO events in 1 and 2, as well as in 3, with the Raman data giving T1/2 values of 190, 243, and 285 K, resp. Bright orange single crystals of the solvatomorph [FeII(hpdpt)2(SCN)2]·MeOH·H2O (2solv) were also structurally and magnetically characterized and, in contrast to 2, found to remain HS down to 4 K, providing further evidence of the huge impact of crystal packing on SCO. Both 1 and 2 form stable Langmuir films at an air-H2O interface, a single layer of which can be transferred to a solid support.

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