Three novel polyoxometalate-based inorganic–organic hybrid materials based on 2,6-bis(1,2,4-triazol-1-yl)pyridine

Wu, Yingying; Li, Xuefei; Liu, Ying; Xiao, Gui; Huang, Yijiao; Li, Yamin; Dang, Dong-Bin; Bai, Yan

doi:10.1039/c9ra01451a

Cited by 17 publications

(12 citation statements)

References 46 publications

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“…On the basis of the above considerations, three V-type N-donor ligands, 2,6-bis(1,2,4-triazol-1-yl)pyridine (btp), 1,3-bis(4 H -1,2,4-triazol-4-yl)benzene (btb), and 3,5-bis(1-imidazolium) pyridine (bip), were used to assemble with isopolymolybdate and transition metal ions, and four isopolymolybdate-based CPs, namely, {[Co(btp)(H 2 O) 2 (β-Mo 8 O 26 ) 0.5 ]·3H 2 O} n ( 1 ), [Ni(btp)(H 4 Mo 6 O 22 ) 0.5 ] n ( 2 ), [Co(btb)(H 2 O)(β-Mo 8 O 26 ) 0.5 ] n ( 3 ), and {[Co(Hbip) 2 (H 2 O) 2 (γ-Mo 8 O 26 )]·6H 2 O} n ( 4 ), were successfully synthesized by using a hydrothermal method. As we know, only several related examples have been reported based on the btp ligand, whereas it has never been explored on btb and bip ligands. Compounds 1 and 3 exhibit 3D frameworks with an unexpected 3-nodal 2,4,6-c net topology and a 4,6-c fsc topology, respectively, while 2D networks are constructed in compounds 2 and 4 and further result in 3D frameworks via hydrogen-bonding and π···π stacking effects, respectively.…”

Section: Introductionmentioning

confidence: 99%

Isopolymolybdate-Based Cobalt/Nickel Coordination Polymers Constructed by V-Type N-Donor Ligands

et al. 2021

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Four novel isopolymolybdate-based coordination polymers (CPs), constructed from 2,6-bis(1,2,4-triazol-1-yl)pyridine (btp), 1,3-bis(4H-1,2,4-triazol-4-yl)benzene (btb), and 3,5-bis(1-imidazolium)pyridine (bip), have been synthesized under a hydrothermal method: {[Co(btp)(H2O)2(β-Mo8O26)0.5]·3H2O} n (1), [Ni(btp)(H4Mo6O22)0.5] n (2), [Co(btb)(H2O)(β-Mo8O26)0.5] n (3), and {[Co(Hbip)2(H2O)2(γ-Mo8O26)]·6H2O} n (4). Complex 1 exhibits one 3D framework with an unexpected 3-nodal 2,4,6-c net topology containing the 1D {β-Mo8O26} n chains, 6-connected CoII centers, and V-type coordinated btp ligands. The neighboring [Mo6O22]4– anions of complex 2 are bridged by the NiII centers to build one 2D {Ni2(Mo6O22)} network, which is arranged into the 3D framework through the weak π···π stacking interactions. In compound 3, one 3D framework is formed by the adjacent 1D {Co2(btp)2} n chains connected by {β-Mo8O26} n units, which demonstrates a rare 4,6-c fsc topology. In complex 4, one 2D {Co(Hbip)2(γ-Mo8O26)} layer with a (4, 4) network is connected to one 3D hydrogen-bonding framework via N-H···O and O-H···O hydrogen bonds. Magnetic data indicate that complexes 1 and 4 exhibit antiferromagnetic behaviors, whereas complexes 2 and 3 reveal spin-canting magnetic behavior and metamagnetic behavior, respectively. In addition, the proton conductivity of complexes 3 and 4 was investigated, showing that compound 4 has good proton conductivity at 85 °C and a relative humidity of 98% RH.

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Section: Introductionmentioning

confidence: 99%

Isopolymolybdate-Based Cobalt/Nickel Coordination Polymers Constructed by V-Type N-Donor Ligands

et al. 2021

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“…The FT‐IR spectrum of NM‐SiO 2 @SiPA‐MA‐Arg showed the bands at about 2750–350 and 1650 cm −1 assigned to the stretching of the carboxylic acid and guanidine part of arginine. Based on the literature, the observed stretching frequencies at 891, 951 and 1079 cm −1 are attributed to P−O, W=O and W−O−W bands of the terminal oxygen of polyoxometalate moiety, respectively [52,53] . The latter signal has overlapped with strong stretching frequencies of CH 2 .…”

Section: Resultsmentioning

confidence: 82%

“…Based on the literature, the observed stretching frequencies at 891, 951 and 1079 cm −1 are attributed to P−O, W=O and W−O−W bands of the terminal oxygen of polyoxometalate moiety, respectively. [ 52 , 53 ] The latter signal has overlapped with strong stretching frequencies of CH 2 . These bands demonstrate the construction of the final catalyst.…”

Section: Resultsmentioning

confidence: 99%

One‐Pot Synthesis of Benzo[4,5]imidazo[1,2‐a]pyrimidin‐2‐ones Using a Hybrid Catalyst Supported on Magnetic Nanoparticles in Green Solvents

Moussa

Rahmati

2021

ChemistryOpen

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The conversion of soluble polyoxometalate into insoluble polyoxometalate is considered to be one of the major challenges in synthetic organic chemistry. Here, polyoxometalate was bonded to the salt part of an organic branch immobilized on the silica‐coated Fe 3 O 4 nanoparticle and characterized using various techniques. The fabricated complex was used as a heterogeneous catalyst in a novel one‐pot reaction for synthesis of benzo[4,5]imidazo[1,2‐ a ]pyrimidin‐2‐ones using aromatic amines, dimethyl acetylenedicarboxylate (DMAD), derivatives of benzaldehyde and 2‐aminobenzimidazole in water/ethanol as a green solvent. 21 derivatives of benzo[4,5]imidazo[1,2‐ a ]pyrimidin‐2‐one were synthesized by this method and fully characterized. The high stability of the catalyst showed that it can be reused for 6 times without decreasing in activity. The combination of new synthetic method, new ferromagnetic heterogeneous nano‐catalyst, green solvent and simple separation method were presented in this work.

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“…Triazole analogues of DTP molecule, compounds 8-10, have similar coordination preferences to DTP, and also form 1D or 2D coordination polymers when complexed to metal salts. [41][42][43][44][45][46][47][48][49][50][51] Chelating tridentate coordination was observed for 1,2,3triazolyl ligand 10 only. [41]…”

Section: Quantum-chemical Calculationsmentioning

confidence: 99%

2,6‐Di(1H‐tetrazol‐1‐yl)pyridine and its cupric chloride complex

Grigoryev

Grigorieva

Lyakhov

et al. 2022

Zeitschrift anorg allge chemie

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2,6‐Di(1H‐tetrazol‐1‐yl)pyridine (DTP) was prepared by a four‐stage procedure, including step‐by‐step heterocyclization of both amino groups of 2,6‐diaminopyridine with triethyl orthoformate and sodium azide. According to quantum‐chemical calculations and single crystal X‐ray diffraction data, DTP crystallizes in the form of the thermodynamically most stable conformer and has an almost flat molecular geometry. DTP was found to react with CuCl2 ⋅ 2H2O in ethanol to give the [Cu(DTP)Cl2(H2O)]n complex, which is a 1D coordination polymer, formed at the expense of bridging DTP ligand via the tetrazole ring nitrogen atoms N4. Possible coordination cites in DTP molecule are discussed using the data of quantum chemical calculations. The pyridine ring nitrogen atom of DTP does not participate in the formation of either coordination or intermolecular hydrogen bonds. This is explained by the results of quantum chemical calculations showing that this atom is less basic than N3 and N4 atoms of DTP molecule.

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Three novel polyoxometalate-based inorganic–organic hybrid materials based on 2,6-bis(1,2,4-triazol-1-yl)pyridine

Abstract: Three novel inorganic–organic hybrid materials based on 2,6-bis(1,2,4-triazol-1-yl)pyridine have been synthesized with different polyanions and transition metal ions.

Cited by 17 publications

References 46 publications

Isopolymolybdate-Based Cobalt/Nickel Coordination Polymers Constructed by V-Type N-Donor Ligands

Isopolymolybdate-Based Cobalt/Nickel Coordination Polymers Constructed by V-Type N-Donor Ligands

One‐Pot Synthesis of Benzo[4,5]imidazo[1,2‐a]pyrimidin‐2‐ones Using a Hybrid Catalyst Supported on Magnetic Nanoparticles in Green Solvents

2,6‐Di(1H‐tetrazol‐1‐yl)pyridine and its cupric chloride complex

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