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Synthesis, Crystal Structure and Fluorescent Properties of 1D New Double Chain Silver(I) Complex
摘要： A novel silver(I) complex [Ag(btzx)2(NO3)]n [complex 1, where btzx = m-xylylenebis(tetrazole)] is synthesized and characterized by elemental analysis, IR, powder and single crystal X-ray diffraction. The crystal structural analysis shows that silver center is four-coordinated in a distorted tetrahedral geometry by four nitrogen atoms from four different btzx and there are very weak interactions exist between Ag(I) and NO3– anions. This complex displays a 1D ladder-like double chain framework, which is further fabricated into a 2D supramolecular framework via π–π interactions. The fluorescence properties of complex 1 were investigated.
关键词： Silver complex,Coordination polymers,Flexible ligand,m-Xylylenebis(tetrazole)
更新于2025-11-14 14:48:53
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Comparison of 1-Propyl-5H-tetrazole and 1-Azidopropyl-5H-tetrazole as Ligands for Laser Ignitable Energetic Materials
摘要： Laser ignitable explosives are potential candidates in future applications for replacing toxic and very sensitive primary explosives, which are used in current devices. In this study, the literature unknown ligand 1-azidopropyl-5H-tetrazole (APT, 1) was synthesized for the first time and applied in energetic coordination compounds (ECC). The complexes are based on different 3d transition metals (Mn2+, Fe2+, Cu2+, and Zn2+) as well as various oxidizing anions (NO3?, ClO4?, ClO3?) and were tested towards their capability as laser ignitable explosives. Furthermore, analogous complexes based on the literature known ligand 1-propyl-5H-tetrazole (PT, 2) were investigated, for comparing the influence of the additional azide group towards the performance of the ECC. Toxicity measurements using Vibrio fischeri and the decreased sensitivities prove their usability as safer laser ignitable explosive with lower toxicities compared to currently used explosives.
关键词： tetrazole ligands,laser ignition,nitrogen heterocycles,structure elucidation,energetic coordination compounds
更新于2025-09-23 15:19:57
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Fluorogenic “photoclick” labelling of DNA using a Cy3 dye
摘要： Two 2’-deoxyuridines as new building blocks for automated DNA synthesis carry a small aryltetrazole as “photoclickable” group at their 5-positions. The postsynthetic “photoclick” labeling of such presynthesized DNA using a maleimide-modified Cy3 dye shows an up to 17-fold fluorogenicity due to an energy transfer between the pyrazoline moiety and the Cy3 fluorophore in the DNA products. This concept is also applicable to other maleimide-modified dyes.
关键词： Fluorogenic labeling,DNA,tetrazole,photoclick reaction,energy transfer,Cy3 dye
更新于2025-09-19 17:15:36
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Solvothermal Synthesis, Crystal Structure and Luminescent Property of Metal-Organic Frameworks with New Topology Built from Tetrazole Ligand
摘要： A novel two-dimensional (2D) Zn(II) metal-organic frameworks [Zn2(H2bdc)(ATZ)2.5(H2O)·2(H2O)] (1; H2bdc = 1,4-benzenedicarboxylate; ATZ = 5-aminotetrazole) has been solvothermally prepared and structurally characterized by single-crystal X-ray diffraction, which shows that compound 1 crystallized in the orthorhombic space group Pbcm with a = 10.2647(3) ?, b = 26.1194(12) ?, c = 27.3699(13) ?, α = β = γ = 90°, V = 7338.1(5) ?3 and Z = 4. Compound 1 exhibits a layered structure with 3,4-connected new topology, and further stacking of layers leads to a 3D supramolecular framework. The thermalgravimatric behaviour and luminescent properties of 1 have been also investigated. The compound exhibits an intense photoluminescence emissions at 450 nm (λex = 375 nm).
关键词： Tetrazole,Luminescent,Metal-organic frameworks,Crystal structure,Solvothermal
更新于2025-09-11 14:15:04
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X-Ray, IR, NMR, UV-visible spectra and DFT analysis of 5-aryloxy-(1H)-tetrazoles, structure, conformation and tautomerism
摘要： The predominant tautomeric forms of N1–H, N2–H of 5-(2,6-dimethyl- and 5-(2,6-diisopropylphenoxy)-(1H)-tetrazoles were analyzed at B3LYP method using 6-311G(d,p) basis set in the gas phase. The N1–H form of tetrazoles was found to be more stable than N2–H form in both solid and gas phases. Crystal structures of both tetrazoles show an intermolecular H-bond between N1-H and N4 atom of other tetrazole space. The hydrogen bonds between each tautomer of tetrazoles were evaluated at B3LYP/6-311G(d,p) level. The geometrical parameters and spectral data of tetrazoles and their variation were studied in both solid and gas phases.
关键词： 5-(2,6-Diisopropylphenoxy)-(1H)-tetrazole,DFT,NMR,X-ray,H-bond,Rotation barrier
更新于2025-09-09 09:28:46