The reaction of N-n-Bu4MnO4 with Mn(Oac) 2 · 4H2O and butenoic acid in nonaqueous solvents leads to the formation of the complex [Mn3O(O2CCH = CHCH3) 6(py) 3] ClO4 · py (1). The crystal structure was determi...The reaction of N-n-Bu4MnO4 with Mn(Oac) 2 · 4H2O and butenoic acid in nonaqueous solvents leads to the formation of the complex [Mn3O(O2CCH = CHCH3) 6(py) 3] ClO4 · py (1). The crystal structure was determined.The complex crystallizes in hexagonal, space group P63/m, unit cell parameters, a = 1. 2456(1)nm, b = 1. 2456(1) nm, c = 1. 8741(1) nm, V=2. 5181(3) nm3, Z =2, and final R1 =0. 0565, wR2 =0. 1465. Variable tem-perature solid tate magnetic susceptibility study shows that the complex [Mn3O(O2CCH = CHCH3)6(py)3] ClO4 (2) has an antiferromagnetic exchange interaction.展开更多
Method for determination of palladium by PAR chelate resin has been used to study higher sensitivity complex molar absorptivity 3.02×10 5L·mol -1 ·cm -1 .Lambert beer law is applicable between 0～14μg/...Method for determination of palladium by PAR chelate resin has been used to study higher sensitivity complex molar absorptivity 3.02×10 5L·mol -1 ·cm -1 .Lambert beer law is applicable between 0～14μg/25.00ml.Detection limit is 0.018μg/25.00ml.Common anion cation do not interfere the determination,and the procedure was of general applicability.展开更多
The pH of both the beginning precipitation and the completion of precipitation,of the slightly soluble compounds,can be determined very conveniently through the logα M(L) -pH curve masking diagram under the condition...The pH of both the beginning precipitation and the completion of precipitation,of the slightly soluble compounds,can be determined very conveniently through the logα M(L) -pH curve masking diagram under the conditions of the existence of masking agent.Some examples are given therein.展开更多
A primary alkyl bromid was synthesized rapidly by treating l-alcohols and HBr with microwave irradiation.The results showed that the rates of reaction were dependent on the dielectric constant of 1-alcohol,and that th...A primary alkyl bromid was synthesized rapidly by treating l-alcohols and HBr with microwave irradiation.The results showed that the rates of reaction were dependent on the dielectric constant of 1-alcohol,and that the rates increased with the dielectric constant of 1-alcohol.展开更多
文摘The reaction of N-n-Bu4MnO4 with Mn(Oac) 2 · 4H2O and butenoic acid in nonaqueous solvents leads to the formation of the complex [Mn3O(O2CCH = CHCH3) 6(py) 3] ClO4 · py (1). The crystal structure was determined.The complex crystallizes in hexagonal, space group P63/m, unit cell parameters, a = 1. 2456(1)nm, b = 1. 2456(1) nm, c = 1. 8741(1) nm, V=2. 5181(3) nm3, Z =2, and final R1 =0. 0565, wR2 =0. 1465. Variable tem-perature solid tate magnetic susceptibility study shows that the complex [Mn3O(O2CCH = CHCH3)6(py)3] ClO4 (2) has an antiferromagnetic exchange interaction.
文摘Method for determination of palladium by PAR chelate resin has been used to study higher sensitivity complex molar absorptivity 3.02×10 5L·mol -1 ·cm -1 .Lambert beer law is applicable between 0～14μg/25.00ml.Detection limit is 0.018μg/25.00ml.Common anion cation do not interfere the determination,and the procedure was of general applicability.
文摘The pH of both the beginning precipitation and the completion of precipitation,of the slightly soluble compounds,can be determined very conveniently through the logα M(L) -pH curve masking diagram under the conditions of the existence of masking agent.Some examples are given therein.
文摘A primary alkyl bromid was synthesized rapidly by treating l-alcohols and HBr with microwave irradiation.The results showed that the rates of reaction were dependent on the dielectric constant of 1-alcohol,and that the rates increased with the dielectric constant of 1-alcohol.
