154403-27-7Relevant articles and documents
Selective Ag(I) binding, H2S sensing, and white-light emission from an easy-to-make porous conjugated polymer
Liu, Jie,Yee, Ka-Kit,Lo, Kenneth Kam-Wing,Zhang, Kenneth Yin,To, Wai-Pong,Che, Chi-Ming,Xu, Zhengtao
, p. 2818 - 2824 (2014)
Separating silver (Ag+) from lead (Pb2+) is one of the many merits of the porous polymer framework reported here. The selective metal binding stems from the well-defined chelating unit of N-heterocycles, which consists of a triazine (C3N3) ring bonded to three 3,5-dimethylpyrazole moieties. Such a rigid and open triad also serves as the distinct building unit in the fully conjugated 3D polymer scaffold. Because of its strong fluorescence and porosity (e.g., BET surface area: 355 m 2/g), and because of the various types of metal species that can be readily taken up, this versatile framework is especially fit for functionalization. For example, with AgNO3 loaded, the framework solid exhibits a brown color in response to water solutions of H2S, even at the dilution of 5.0 μM (0.17 ppm); whereas cysteine and other biologically relevant thiols do not cause notable change in color. In another example, tunable white-light emission was produced when an Ir(III) complex was doped (e.g., about 0.02% of the polymer weight) onto the framework. Mechanistically, the bound Ir(III) centers become highly emissive in the orange-red region, complementing the broad, bluish emission from the polymer host to result in the overall white-light quality: the color attributes of the emission are therefore easily tunable by the Ir(III) dopant concentration. With this exemplary study, we intend to highlight metal uptake as an effective approach to modify and enrich the properties of porous polymer frameworks and to stimulate interest in further examining metal-polymer interactions in the context of sensing, separation, catalyzes, and other applications.
The structure of tris(3′,5′-dimethyl-pyrazol-1-yl)-s-triazine and its use as a ligand in coordination chemistry
Guerrero,Jalon,Manzano,Claramunt,Cabildo,Infantes,Cano,Elguero
, p. 1396 - 1403 (2003)
The crystal and molecular structure of the title compound (Me 2-TPzT) has been determined by X-ray analysis. The observed molecular conformation presents the nitrogen atoms of three pyrazole rings in the same relative positions. The molecules are joined through intermolecular contacts forming chains that are arranged in a distorted hexagonal symmetry. Two complexes containing this ligand have been prepared: [{Pd(en)} 3(Me2-TPzT)](PF6)6 and [{Ag(PPh 3)}3(Me2-TPzT)](ClO4)3, which, due to their insolubility, have been characterized only by microanalysis, IR, 1H NMR and, in the latter case, by mass spectrometry.
Synthesis and solution fluxionality of rhenium(I) carbonyl complexes of 2,4,6-tris(pyrazol-1-yl)-1,3,5-triazines (L), [ReX(CO)3L] (X = Cl, Br or I). Characterization of [{ReX(CO)3}2L] (X = Cl or Br)
Gelling, Andrew,Orrell, Keith G.,Osborne, Anthony G.,Sik, Vladimir
, p. 3371 - 3377 (1996)
The stable octahedral complexes fac-[ReX(CO)3L] [X = Cl, Br or I; L = 2,4,6-tris(4-methylpyrazol-1-yl)-1,3,5-triazine (tmpzt) or 2,4,6-tris(3,5-dimethylpyrazol-1-yl)-1,3,5-triazine (tdmpzt)] have been prepared in which the substituted triazines act as bidentate chelate ligands. In solution the complexes are fluxional with the nitrogen ligand oscillating between two equivalent bonding modes. Rates and activation energies for the fluxion have been investigated by dynamic NMR methods. Activation energies ΔG? (298.15 K) are in the range 47-72 kJ mor-1 and are dependent on the steric requirements of the pyrazole groups. At low temperatures changes in the 1H NMR spectra are interpreted in terms of varying rates of rotation of one of the unco-ordinated pyrazole rings. The non-fluxional dimetallic complexes [{ReX(CO)3}2L] (X = Cl or Br; L = tdmpzt) were also isolated and structurally characterized by 1H NMR spectroscopy.
Molecular design and the optimum synthetic route of the compounds with multi-pyrazole and its derivatives and the potential application in antibacterial agents
Wang, Ji-Xiao,Zhu, Zi-Ran,Bai, Feng-Ying,Wang, Xin-Yu,Zhang, Xiao-Xi,Xing, Yong-Heng
, p. 59 - 70 (2015/07/20)
Molecular design and efficient synthetic procedures have been developed for pyrazole and its derivatives with different linkers. In particular, twelve compounds with -I or -NO2 substituted groups on the pyrazole ring were synthesized for the fi
Luminous Compound Containing Lanthanide Ion
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Page/Page column 14, (2009/10/06)
A luminous compound represented by the following formula (I): [in-line-formulae]Met-COG-ChHet??Formula (I)[/in-line-formulae] wherein Met represents a group containing a lanthanide ion, COG represents a heterocyclic group bonded directly to the lanthanide ion contained in the group represented by Met, and ChHet represents a group having a heterocycle, where ChHet is preferably a group that conjugates with COG.
2,4,6-tris(azol-1-yl)-1,3,5-triazines: A new class of multidentate ligands
Milata, Viktor,Claramunt, Rosa Mari?a,Cabildo, Pilar,Santa Mari?a, Mari?a Dolores,Cornago, Pilar,Infantes, Lourdes,Cano, Felix H.,Elguero, Jose
, p. 905 - 924 (2007/10/03)
The synthesis of thirteen tris(azol-1-yl)-s-triazines (azole = pyrazoles, imidazoles, 1,2,4-triazole and benzimidazoles) is described. Particularly interesting are the compounds derived from C-adamantylazoles (4-adamantylpyrazole, 2-adamantylimidazole and
