The title compound C 13 H 9ClN 2(M=228.67) was prepared,and its single crystal was obtained.The crystal belongs to orthorhombic system,space group Pbca with cell parameters:a=0.70567(8),b=0.9978(2),c= 3.2464(4)nm ,V=2...The title compound C 13 H 9ClN 2(M=228.67) was prepared,and its single crystal was obtained.The crystal belongs to orthorhombic system,space group Pbca with cell parameters:a=0.70567(8),b=0.9978(2),c= 3.2464(4)nm ,V=2.2858(6)nm 3,Z=8,Dc=1.329kg/dm 3,F(000)=944,μ=0.305mm -1 .2377 independent reflections were collected,in which 1214[I>2σ(I)] reflections that could be observed were used for the structural analysis.The final refinement converged to R=0.0421,wR=0.0999,(Δ/σ) max =0.001,S=0.833.The dicyclic ring of benzimidazole and chlorobenzene ring formed a propeller configuration in the compound.展开更多
Six title compounds were synthesized by the reaction of salicylic acid and 4 substituted phenylenediamine in the presence of pyridine and POCl 3 by microwave irradiation.The reactions took place easily with good yields.
In the presence of Triton X100,the color reaction of Mercury(Ⅱ)with 2hydroxy5nitrophenyldiazoaminoazobenene(HNPDAAB)was studied.Mercury(Ⅱ)reacts with HNPDAAB and forms a 1∶1 red complex at pH=95-110 buffer solution...In the presence of Triton X100,the color reaction of Mercury(Ⅱ)with 2hydroxy5nitrophenyldiazoaminoazobenene(HNPDAAB)was studied.Mercury(Ⅱ)reacts with HNPDAAB and forms a 1∶1 red complex at pH=95-110 buffer solution of Na2B4O7NaOH.The molar absorptivity is 256×105L·mol-1·cm-1.Beer’s law is obeyed in the concentration range of 0～12μg/25mL for Mercury(Ⅱ).The results are in agreement with those determined by the conventional method.This new method was used to determine trace mercury in wastewater.展开更多
Bis(2-benzimidazolyl)propane was synthesized by the reaction of o-phenylenediamine and glutaric acid which was accelerated by microwave irradiation and catalyzed by poly phosphoric acid(PPA) under solvent-free conditi...Bis(2-benzimidazolyl)propane was synthesized by the reaction of o-phenylenediamine and glutaric acid which was accelerated by microwave irradiation and catalyzed by poly phosphoric acid(PPA) under solvent-free condition. By the method of orthogonal experiment optimize synthesis factors which affect the reation: o-Phenylent Diamine: glutaric acid:2.2∶1.0(mol:mol),PPA:9.0g,time of microwave irradiation:8min, and the power of microwave irradiation:160W. Under the optimal condition, the highest yield of Bis(2-benzimidazolyl) propane is 77.4%. The products were characterized by melting point determination, IR spectrogram,1HNMR spectra and 13CNMR spectra.展开更多
文摘The title compound C 13 H 9ClN 2(M=228.67) was prepared,and its single crystal was obtained.The crystal belongs to orthorhombic system,space group Pbca with cell parameters:a=0.70567(8),b=0.9978(2),c= 3.2464(4)nm ,V=2.2858(6)nm 3,Z=8,Dc=1.329kg/dm 3,F(000)=944,μ=0.305mm -1 .2377 independent reflections were collected,in which 1214[I>2σ(I)] reflections that could be observed were used for the structural analysis.The final refinement converged to R=0.0421,wR=0.0999,(Δ/σ) max =0.001,S=0.833.The dicyclic ring of benzimidazole and chlorobenzene ring formed a propeller configuration in the compound.
文摘Six title compounds were synthesized by the reaction of salicylic acid and 4 substituted phenylenediamine in the presence of pyridine and POCl 3 by microwave irradiation.The reactions took place easily with good yields.
文摘In the presence of Triton X100,the color reaction of Mercury(Ⅱ)with 2hydroxy5nitrophenyldiazoaminoazobenene(HNPDAAB)was studied.Mercury(Ⅱ)reacts with HNPDAAB and forms a 1∶1 red complex at pH=95-110 buffer solution of Na2B4O7NaOH.The molar absorptivity is 256×105L·mol-1·cm-1.Beer’s law is obeyed in the concentration range of 0～12μg/25mL for Mercury(Ⅱ).The results are in agreement with those determined by the conventional method.This new method was used to determine trace mercury in wastewater.
文摘Bis(2-benzimidazolyl)propane was synthesized by the reaction of o-phenylenediamine and glutaric acid which was accelerated by microwave irradiation and catalyzed by poly phosphoric acid(PPA) under solvent-free condition. By the method of orthogonal experiment optimize synthesis factors which affect the reation: o-Phenylent Diamine: glutaric acid:2.2∶1.0(mol:mol),PPA:9.0g,time of microwave irradiation:8min, and the power of microwave irradiation:160W. Under the optimal condition, the highest yield of Bis(2-benzimidazolyl) propane is 77.4%. The products were characterized by melting point determination, IR spectrogram,1HNMR spectra and 13CNMR spectra.
