The title complex [(C12H8N2)2Bi(O2NO)3] was synthesized by reaction of 1,10-phenanthroline (phen) and Bi(NO3)3·5H2O. The structure of the complex was characterized by single-crystal X-ray diffraction, IR spectroscopy, and elemental analysis. An advanced solution-reaction isoperibol microcalorimeter was applied to determine the standard molar enthalpies of formation at 298.15 K of the complex and Bi(NO3)3·5H2O, giving –(798.92 ± 5.99) and –(1986.87 ± 0.20) kJ mol−1, respectively. The biological effect of the complex was evaluated by microcalorimetry on the growth of Schizosaccharomyces pombe (S. pombe). According to thermogenic curves, the corresponding thermokinetics and thermodynamic parameters were derived. The complex had good bioactivity on the growth metabolism of S. pombe, with the value of IC50 being 2.8 × 10−5 mol L−1.
Two coordination polymers,{[Cu_3(tci)_2(DMAc)_3]-6DMAc 2H_2O}_n(1) and {[Cu_3(tci)_2(tpt)_2(H_2O)_2].2DMAc-2H_2O}_n(2)(H_3tci = tris(2-carboxyethyI)isocyanurate,tpt = 2,4,6-tris(4-pyridyl)-l,3,5-triazine,DMAc = N,/V-dimethylacetamide),have been constructed under solvothermal conditions.Both polymers were structurally characterized by single crystal X-ray diffraction,elemental analyses,IR spectra,thermogravimetric(TG) analyses and powder X-ray diffraction(RXPD).1 shows a(3,4)-connected 2D layer structure comprising Cu_2(CO_2)4 paddle-wheel units,which are further bridged by C-H…O interactions to give a 3D supramolecular network.The introduction of tpt produces different framework for 2 that comprises a dinuclear and a mononuclear Cu(Ⅱ) building units,which are further bridged together by tci~(3-) and tpt ligands to give a 4-connected 2D topological net.Adjacent 2D layers are packed together via C-H…O interactions and π…π stacking interactions to form a 3D supramolecular structure.In addition,the luminescent properties and the solid-state UV-vis spectra of 1 and 2 were explored.Furthermore,antiferromagnetic exchange interactions were unveiled in the Cu_2(COO)_4 units of 1. 相似文献
A two-dimensional (2D) 3,3,3,4,5,5,6-connected ZnⅡ coordination compound [Zn5(L)2(OH)6]∞ (L=9,10-dioxo-9,10-dihydroanthracene-1,8-dicarboxylate) has been synthesized and characterized by IR, elemental analysis, X-ray powder diffraction and single crystal X-ray diffraction analysis. Moreover, the luminescent properties of the ligand and corresponding compound have been briefly investigated. 相似文献
The high-pressure thermal properties and their correlation with burning rates of the composite modified double base (CMDB)
propellants containing 3,6-bis (1H-1,2,3,4-tetrazol-5-yl-amino)-1,2,4,5-tetrazine (BTATz), a substitute of hexogen (RDX),
were investigated using the high-pressure differential scanning calorimetry (PDSC). The results show that there is a main
exothermal decomposition process with the heating of each propellant. High pressure can restrain the volatilization of NG,
accelerate the main decomposition reaction, and make the reaction occur easily. High pressure can change the main decomposition
reaction mechanism function and kinetics, and the control process obeys the rule of Avrami–Erofeev equation at high pressure
and chemical reaction at normal pressure. However, the mechanism function can not be changed by the ballistic modifier. The
correlation between PDSC characteristic values and burning rates was carried out and found that u and
( p \Updelta H\textd / \Updelta T ) 1 / 2 \left( {p \, \Updelta H_{\text{d}} { / }\Updelta T} \right)^{ 1 / 2} keep a good linear relation, ku keeps a similar changing trend with u, and it can be used to study the effect of the ballistic modifier or the other component on the burning rates. 相似文献
One new coordination polymer, [Ni(m-bix)(m-BDC)](1, m-bix = 1,3-bis(imidazol-1-ylmethyl)benzene, m-BDC = 1,3-benzenedicarboxylic acids), has been hydrothermally synthesized and structurally characterized by elemental analysis, IR, TGA and X-ray single-crystal diffraction. The green block crystal of complex 1(C22H18N4Ni O4) belongs to monoclinic system, space group P21/c with a = 10.0418(3), b = 23.8651(6), c = 8.7872(2) A, β = 112.333(3)o, V = 1947.88(9)A3, Z = 4, Dc = 1.572 g/cm3, Mr = 461.11, F(000) = 952, R = 0.0335 and w R = 0.0683 for 2827 observed reflections(I 2σ(I)). Complex 1 exhibits a novel 6-connected 3D sxd type topological framework. The magnetic characterization of complex 1 shows antiferromagnetic coupling exchange. 相似文献
A new metal–organic framework {[Zn_2(bpta)(bpy-ee)(H_2O)_2]·x solve}_n(1)(H_4bpta = biphenyl-2,20,6,60-tetracarboxylic acid and bpy-ee = 1,2-bis(4-pyridyl)ethylene) has been obtained under hydrothermal condition, and structurally characterized by single-crystal X-ray diffraction. Complex 1 reveals a threedimensional(3D) ‘‘pillar-layered' framework with non-flexible linker, in which some different structure characters can be found compared to that of some related other ‘‘pillar-layered' MOFs based on flexible pillar linkers. It demonstrates the impact of the flexibility of pillar linker on the final structure in this system. In addition, the selective CO_2 adsorption performance of 1 was also investigated. 相似文献
The ground state geometric, electronic structure and Raman spectra of 5,15-diphenylporphine (H(2)DPP) have been studied using B3LYP/6-31G(d) method and compared with that of well-studied free base porphine (H(2)P) and meso-tetraphenylporphine (H(2)TPP). Calculation shows that 5,15-substitution causes remarkable in-plane distortion, whereas the resulting out-of-plane distortion is negligible. The calculated electronic structure of H(2)DPP is consistent with the absorption spectra compared with H(2)P and H(2)TPP. The calculated vibrational frequencies of H(2)DPP scaled with a single factor of 0.971 agree well with experimental data (the rms error is 8.0 cm(-1)). The assignment of experimental Raman bands of H(2)DPP was discussed on the basis of theoretical calculation and the comparison with that of H(2)P and H(2)TPP. The splitting of some vibrational modes involving the motion of C(m) atom, such as nu(1), nu(8), and nu(10), was observed and was attributed to the diversification of the environment around C(m) atoms. As the shift of absorption peaks, the shift of some structure-sensitive Raman bands of H(2)DPP form that of H(2)TPP and H(2)P was attributed to the in-plane nuclear reorganization (IPNR) induced by phenyl-substitution, though the contribution of nonplanarity mechanism could not be excluded completely. 相似文献