Reaction of 2-pyridone, copper acetate and terbium(or yttrium) perchlorate in acetone with the mole ratio 6: 2: 1 results in the formation of heteronuclear complex Ln_2Cu_4L_8 (HL)_4 (OH)_2 (ClO_4)_4 (H_20)_(10) 2CH_3...Reaction of 2-pyridone, copper acetate and terbium(or yttrium) perchlorate in acetone with the mole ratio 6: 2: 1 results in the formation of heteronuclear complex Ln_2Cu_4L_8 (HL)_4 (OH)_2 (ClO_4)_4 (H_20)_(10) 2CH_3COCH_3(Ln = Tb (1), Y (2)). By recrystallizing (1) in CHCl_3 single crystals were obtained and the structure was determined by four-circle diffractometer. Data showed that the crystal is in space group C2/m with a=27. 454(9)A, b=13, 608A, c=30. 556(11)A, β=99. 89(3)°, v=11245. 7(7. 5)A^3. The structure was solved by a combination of Patterson method and Fourier technique. The final R value is 0. 103. In the structure, four copper and two terbium ions are bridged by 2-pyridone anions to form an essentially octahedral Cu_4Tb_2 core. The terbium atoms are each eight-coordinate and the copper atoms are five-coordinate.展开更多
The synthesis, characterization and crystal structure of rare earth coordination complex of {Pr[（C;H;O）;POO];};has been studied. It is triclinic with space group P1 in a unit cell of dimensions a=11.788（5）, b=12....The synthesis, characterization and crystal structure of rare earth coordination complex of {Pr[（C;H;O）;POO];};has been studied. It is triclinic with space group P1 in a unit cell of dimensions a=11.788（5）, b=12.536（3）, c=10.262（2.） , α=112.21（2）, β=93.01（3）, γ=109.94（3）°; V=1290.9（8）;, Z=2. As shown in Fig. 1, each Pr atom is connected with other two Pr atoms through three "O-P-O" bridging groups to form a long chain polymer. The coordination number of Pr is six. The six coordinated O atoms form an octahedron. The average bond distance of Pr-O is 2.333 A. The complex has been also studied by infrared spectroscopy and thermal analyses.展开更多
the reaction of C_(60) with methyl bromacetate in the presence of Sml_2 gives the title compound 1-methoxycarbonylmethy1-21hydrofullerene in good yield.
C60 reacts with 2-aminoethylhydrogensulfate to give a mixture of mono-and bispiperazine fullerene adducts C60(C4H8N2)1-2 and a water-soluble fullerence derivative C60Hn(NHCH2CH2OSO3Na)n.
基金Project supported by China National Climbing plan and National Nature Science Foundation
文摘Reaction of 2-pyridone, copper acetate and terbium(or yttrium) perchlorate in acetone with the mole ratio 6: 2: 1 results in the formation of heteronuclear complex Ln_2Cu_4L_8 (HL)_4 (OH)_2 (ClO_4)_4 (H_20)_(10) 2CH_3COCH_3(Ln = Tb (1), Y (2)). By recrystallizing (1) in CHCl_3 single crystals were obtained and the structure was determined by four-circle diffractometer. Data showed that the crystal is in space group C2/m with a=27. 454(9)A, b=13, 608A, c=30. 556(11)A, β=99. 89(3)°, v=11245. 7(7. 5)A^3. The structure was solved by a combination of Patterson method and Fourier technique. The final R value is 0. 103. In the structure, four copper and two terbium ions are bridged by 2-pyridone anions to form an essentially octahedral Cu_4Tb_2 core. The terbium atoms are each eight-coordinate and the copper atoms are five-coordinate.
文摘The synthesis, characterization and crystal structure of rare earth coordination complex of {Pr[（C;H;O）;POO];};has been studied. It is triclinic with space group P1 in a unit cell of dimensions a=11.788（5）, b=12.536（3）, c=10.262（2.） , α=112.21（2）, β=93.01（3）, γ=109.94（3）°; V=1290.9（8）;, Z=2. As shown in Fig. 1, each Pr atom is connected with other two Pr atoms through three "O-P-O" bridging groups to form a long chain polymer. The coordination number of Pr is six. The six coordinated O atoms form an octahedron. The average bond distance of Pr-O is 2.333 A. The complex has been also studied by infrared spectroscopy and thermal analyses.
基金National Natural Science Foundation of China!No.29825102
文摘the reaction of C_(60) with methyl bromacetate in the presence of Sml_2 gives the title compound 1-methoxycarbonylmethy1-21hydrofullerene in good yield.
文摘C60 reacts with 2-aminoethylhydrogensulfate to give a mixture of mono-and bispiperazine fullerene adducts C60(C4H8N2)1-2 and a water-soluble fullerence derivative C60Hn(NHCH2CH2OSO3Na)n.
