The synthesis of an new photochromical compound,1,3,3 trimethyl 6′ (1 piperidinyl) spiro[2h indole 2,3′ [3H]pyridobenzoxazine (SP3),and an improved way for the synthesis of 6 hydroxyquinoline were descrided.The abso...The synthesis of an new photochromical compound,1,3,3 trimethyl 6′ (1 piperidinyl) spiro[2h indole 2,3′ [3H]pyridobenzoxazine (SP3),and an improved way for the synthesis of 6 hydroxyquinoline were descrided.The absorption spectrum of the colored metastable form SP3 shows prominent absorption peak at 560nm at 60℃?展开更多
The synergistic extraction of lanthanide ions(La3+,Pr3+,Nd3+,Gd3+,Dy3+)by Bis（1′-phenyl-3′-mcthyl-5′-pyrazolonc-4′-yl）Phthaldionc（H2BPMOPP or H2A）with 8-Hydroxyquinolinc（HOx）from nitric acid aolution was stu...The synergistic extraction of lanthanide ions(La3+,Pr3+,Nd3+,Gd3+,Dy3+)by Bis（1′-phenyl-3′-mcthyl-5′-pyrazolonc-4′-yl）Phthaldionc（H2BPMOPP or H2A）with 8-Hydroxyquinolinc（HOx）from nitric acid aolution was studied.The synergistic coefficient for La3+ was 8.1.The composition of the extracted compound was shown to be LaA·HA·HOx.The pH1/2 values for La3+,Pr3+,Nd3+,Gd3+ and Dy3+ were 4.20,3.73,3.49,3.30 and 3.01 respectively.The extraction equilibrium constants,enthalyp change and entropy change of the reaction also were calculated.展开更多
文摘The synthesis of an new photochromical compound,1,3,3 trimethyl 6′ (1 piperidinyl) spiro[2h indole 2,3′ [3H]pyridobenzoxazine (SP3),and an improved way for the synthesis of 6 hydroxyquinoline were descrided.The absorption spectrum of the colored metastable form SP3 shows prominent absorption peak at 560nm at 60℃?
文摘The synergistic extraction of lanthanide ions(La3+,Pr3+,Nd3+,Gd3+,Dy3+)by Bis（1′-phenyl-3′-mcthyl-5′-pyrazolonc-4′-yl）Phthaldionc（H2BPMOPP or H2A）with 8-Hydroxyquinolinc（HOx）from nitric acid aolution was studied.The synergistic coefficient for La3+ was 8.1.The composition of the extracted compound was shown to be LaA·HA·HOx.The pH1/2 values for La3+,Pr3+,Nd3+,Gd3+ and Dy3+ were 4.20,3.73,3.49,3.30 and 3.01 respectively.The extraction equilibrium constants,enthalyp change and entropy change of the reaction also were calculated.
