共查询到16条相似文献,搜索用时 93 毫秒
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研究了1,2-双(1′-苯基-3′-甲基-5′-氧代吡唑-4′-基)乙二酮-[1,2](H 相似文献
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研究了 1,2 -双 ( 1′-苯基 - 3′-甲基 - 5′-氧代吡唑 - 4′-基 )乙二酮 -〔1,2〕( H2 A )与三正辛基氧化膦 ( TOPO )协同萃取 RE( ) ( RE=L a、Pr、Nd、Gd、Dy和 Y)的性能。通过考察萃取剂浓度、溶液酸度和温度对 RE( )萃取平衡的影响 ,确定了萃取机理和萃合物组成 ,求得了半萃取 p H1 /2 值和萃取反应平衡常数 Ks.e.。 相似文献
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研究了1,9 - 双(1′- 苯基- 3′- 甲基-5′- 氧代吡唑-4′- 基) 壬二酮- 〔1 ,9〕(BPMPND, H2A) 与三辛基氧膦(TOPO) 或三苯基氧膦(TPPO) 的氯仿溶液从硝酸介质中对铕( Ⅲ) 的协同萃取行为。用斜率法测定了BPMPND单独和协同萃取铕(Ⅲ) 的萃合物组成分别为EuA·HA 和EuA·HA·B(B为TOPO 或TPPO) , 计算了相应的萃取平衡常数。用萃取法制得了固态协萃合物, 并对其组成和IR进行了研究。 相似文献
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研究了用1-苯基-3-甲基-4-二氯乙酰基吡唑酮-5(PMDCP)和磷酸三丁酯(TBP)的氯仿溶液从HNO_3介质中对La(Ⅲ)、Nd(Ⅲ)、Dy(Ⅲ)和Yb(Ⅲ)的萃取。用萃取法确定了萃合物的组成为La(PMDCP)_3,二元协萃络合物的组成为La(PMDCP)_3(TBP)_2。并在氯仿介质中做了萃取剂、二元协萃络合物的红外吸收光谱。测定了它们的半萃取pH及热力学数据。 相似文献
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G. Rijulal P. Indrasenan 《中国稀土学报(英文版)》2007,25(6):670-673
A series of seven novel lanthanide(Ⅲ ) nitrato complexes with 4-[ N-(2-methoxybenzylimine)formyl] 1-2, 3- dimethyl-1-phenyl-3-pyazolin-5-one (2mbfa), were synthesized. These complexes were characterized by elemental analysis, molecular mass determination, conductance and magnetic moment measurements, IR, UV-visible, and ^13CNMR spectral studies, In these complexes, the Schiff base, 2mbfa, acts as neutral bidentate ligand by utilizing the carbonyl oxygen and azomethine nitrogen as donor sites. All the three nitrate ions are also coordinated unidentately with 7 coordination for the lanthanide(Ⅲ) ions with a tentative monocapped octahedral geometry for the complexes. All the seven lanthanide(Ⅲ) complexes have a general formula, [ Ln(2mbfa):(NO3)3 ]. 相似文献
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(C5H5)3Ln(THF)reacted with amine bis(phenol) LH2 [ L = Me2NCH2CH2N {CH2-(2-O-C6H2-But^1-3-Me- 5)}2 ] in a 1:1 molar ratio in THF to generate the amine bis(phenolato) cyclopentadienyl lanthanide complexes LLn(C5H5) (THF)·(THF),(Ln = La (1), n =0; Ln = Sm(2), n = 1) in high yields. Complexes 1 and 2 were fully characterized by elemental analysis, NMR (for 1) and IR spectra, and X-ray structural determination. The crystal data of complex 1 are monoclinic, P21/c space goup, a= 1.1595(1) nm, b = 1.8588(2) nm, c = 1.6647(1) nm, β = 98.490(2)°, V =3.5486(5) nm^3, Z =4, Dc = 1.338 mg· m^3,μ = 1240 mm^-1, F(000)= 1488, R =0.0249, wR = 0.0568. The crystal data of complex 2 are monoclinic, P21/c sp ace goup, a = 0.9692 (1) nm, b = 1.4583 (2) nm, c = 2.8192 (3) nm, = 96.805 (2)°, V = 3.9584 (7) nm^3, Z=4, Dc =1.340 mg · ma, μ = 1.524 mm^-1, F(000)= 1668, R =0.0346, wR =0.0756. The attempts failed to synthesize the amine bis(phenolate) lanthanide alkoxides by the reactions of complexes 1 and 2 with alcohols. The preliminary results revealed that complex 1 can initiate ε-caprolactone polymerization. 相似文献
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研究了用1-苯基-3-甲基-4-苯甲酰基吡啉唑酮-5(PMBP)的氯仿溶液,从高氯酸介质中萃取钯的机理。采用斜率法测得萃合物组成为(Pd.L)ClO4,萃取反应方程式为:HL(o)+Pd^2 (a) ClO4^-(a)=(Pd.L)ClO4(o)^ (a)。 相似文献