Four lanthanide coordination complexes, namely, [Ln（2,3-DClBA）3（5,5’-dmebipy）（H2O）]2（Ln=Sm（1）, Eu（2）, Dy（3）, Ho（4））; 2,3-DClBA=2,3-dichlorobenzoate; 5,5’-dmebipy=5,5’-dmethylbipyridine） were synthe...Four lanthanide coordination complexes, namely, [Ln（2,3-DClBA）3（5,5’-dmebipy）（H2O）]2（Ln=Sm（1）, Eu（2）, Dy（3）, Ho（4））; 2,3-DClBA=2,3-dichlorobenzoate; 5,5’-dmebipy=5,5’-dmethylbipyridine） were synthesized and characterized by elemental analysis, infrared spectroscopy and single crystal X-ray diffraction. Findings indicated that complex 3 was a dinuclear molecule, and the center Dy3＋ was eight-coordinated. Each dinuclear units could be connected by H bond and halogen-halogen interactions. Luminescent property of complex 2 suggested the typical intense emissions of Eu3＋ ions. Thermal analysis showed that the complexes decomposed in three steps： the coordination water was lost firstly then the neutral ligand 5,5’dmebipy was lost and lastly the 2,3-DClBA ligand was lost.展开更多
Organic-inorganic hybrid perovskites(OIHPs)materials with high phase transition temperature(T_(p))have been widely studied in the field of molecular switches,solar energy and electric power.At present,the OIHPs with h...Organic-inorganic hybrid perovskites(OIHPs)materials with high phase transition temperature(T_(p))have been widely studied in the field of molecular switches,solar energy and electric power.At present,the OIHPs with high T_(p)are generally constructed through molecular design,which can be applied to a wide temperature range.Here,three one-dimensional(1D)OIHPs[R-Cl EQ]PbCl_(3)(T_(p)=442 K),[R-Cl EQ]PbBr_(3)(T_(p)=499 K)and[R-Cl EQ]PbI_(3)(T_(p)above m.p.)(R-Cl EQ=(R)-N-chloroethyl-3-quinuclidinol)with different T_(p)are obtained by regulating the halogen-halogen interaction and hydrogen bonding in the system.Especially in[R-Cl EQ]Pb X_(3)(X=Cl,Br and I)crystal system,all the halogen bonds tend to form at approximately 180°angles and the strength of halogen bonding is found to be increased from 1.59×10^(-3)Hartree to 2.35×10^(-3)Hartree with increased atom number from Cl to I.The synergistic effect of halogen bonding and hydrogen bonding provide a useful strategy for the design OIHPs phase transition materials with high T_(p).展开更多
Reduction of halogenated dinitro-triphenyl ethers over Fe-HCl gave halogenated diamino-triphenyl ethers in 77.0-94.0%.The reaction were fast and easy to operate while water was used as a proton-donator and ethanol was...Reduction of halogenated dinitro-triphenyl ethers over Fe-HCl gave halogenated diamino-triphenyl ethers in 77.0-94.0%.The reaction were fast and easy to operate while water was used as a proton-donator and ethanol was used as a solvent.展开更多
Halobenzene substituted by strong withdrawing-electron group was condensed with dihydroxy-benzene in non-protonic polar solvent and in the present of alkali metal carbonate,six bis(nitrophenoxy)-Benzene were synthesiz...Halobenzene substituted by strong withdrawing-electron group was condensed with dihydroxy-benzene in non-protonic polar solvent and in the present of alkali metal carbonate,six bis(nitrophenoxy)-Benzene were synthesized in good yields and good qualities by series of conditional tests.展开更多
基金supported by the National Natural Science Foundation of China(21073053,21473049)the Natural Science Foundation of Hebei Province,China(B2016205207)
文摘Four lanthanide coordination complexes, namely, [Ln（2,3-DClBA）3（5,5’-dmebipy）（H2O）]2（Ln=Sm（1）, Eu（2）, Dy（3）, Ho（4））; 2,3-DClBA=2,3-dichlorobenzoate; 5,5’-dmebipy=5,5’-dmethylbipyridine） were synthesized and characterized by elemental analysis, infrared spectroscopy and single crystal X-ray diffraction. Findings indicated that complex 3 was a dinuclear molecule, and the center Dy3＋ was eight-coordinated. Each dinuclear units could be connected by H bond and halogen-halogen interactions. Luminescent property of complex 2 suggested the typical intense emissions of Eu3＋ ions. Thermal analysis showed that the complexes decomposed in three steps： the coordination water was lost firstly then the neutral ligand 5,5’dmebipy was lost and lastly the 2,3-DClBA ligand was lost.
基金financially supported by the National Natural Science Foundation of China(No.22005183)the Program of State Key Laboratory of Quantum Optics and Quantum Optics Devices(No.KF202204)the 1331 Project for Featured Chemistry Discipline in Shanxi Normal University。
文摘Organic-inorganic hybrid perovskites(OIHPs)materials with high phase transition temperature(T_(p))have been widely studied in the field of molecular switches,solar energy and electric power.At present,the OIHPs with high T_(p)are generally constructed through molecular design,which can be applied to a wide temperature range.Here,three one-dimensional(1D)OIHPs[R-Cl EQ]PbCl_(3)(T_(p)=442 K),[R-Cl EQ]PbBr_(3)(T_(p)=499 K)and[R-Cl EQ]PbI_(3)(T_(p)above m.p.)(R-Cl EQ=(R)-N-chloroethyl-3-quinuclidinol)with different T_(p)are obtained by regulating the halogen-halogen interaction and hydrogen bonding in the system.Especially in[R-Cl EQ]Pb X_(3)(X=Cl,Br and I)crystal system,all the halogen bonds tend to form at approximately 180°angles and the strength of halogen bonding is found to be increased from 1.59×10^(-3)Hartree to 2.35×10^(-3)Hartree with increased atom number from Cl to I.The synergistic effect of halogen bonding and hydrogen bonding provide a useful strategy for the design OIHPs phase transition materials with high T_(p).
文摘Reduction of halogenated dinitro-triphenyl ethers over Fe-HCl gave halogenated diamino-triphenyl ethers in 77.0-94.0%.The reaction were fast and easy to operate while water was used as a proton-donator and ethanol was used as a solvent.
文摘Halobenzene substituted by strong withdrawing-electron group was condensed with dihydroxy-benzene in non-protonic polar solvent and in the present of alkali metal carbonate,six bis(nitrophenoxy)-Benzene were synthesized in good yields and good qualities by series of conditional tests.
