A 3d 4f complex [La(DMF) 6(H 2O) 3]·2H 2O (DMF=N,N dimethylformamide) was prepared and characterized by single crystal structure analysis. Single crystal X ray diffraction analysis reveals that the presen...A 3d 4f complex [La(DMF) 6(H 2O) 3]·2H 2O (DMF=N,N dimethylformamide) was prepared and characterized by single crystal structure analysis. Single crystal X ray diffraction analysis reveals that the present complex contains 3- and [La(DMF) 6(H 2O) 3] 3+ ionic pairs. The La(Ⅲ) ion is nine coordinate, and is coordinated by seven oxygen atoms of three water molecules and six DMF molecules. Each terminal CN ligand of the 3- entity is hydrogen bonded to oxygen atoms of the coordinated and lattice water molecules producing a three dimensional network. Crystal data for [La(DMF) 5(H 2O) 3]·2H 2O (C 24 H 52 CrLaN 12 O 11 =875.69): orthorhombic, space group Cmca, with lattice parameters of a =1.9346(2) nm, b =2.8902(2) nm, c =1.4825(2) nm, V =8.289(2) nm 3, Z =8, S =1.074, ρ calc =1.403 g·cm -3 , R 1=0.046, wR 2=0 117 based on 244 parameters for 5083 observed ( I >2 σ ( I )) reflections.展开更多
Two cyano bridged dimeric 4f 3d complexes [Nd(DMF) 4(H 2O) 3Co(CN) 6]·H 2O (A) and [Sm(pyr) 4(H 2O) 3Cr(CN) 6]·2H 2O (B) (DMF=N,N dimethylformamide, pyr=2 pyrrolidone) were prepared and structu...Two cyano bridged dimeric 4f 3d complexes [Nd(DMF) 4(H 2O) 3Co(CN) 6]·H 2O (A) and [Sm(pyr) 4(H 2O) 3Cr(CN) 6]·2H 2O (B) (DMF=N,N dimethylformamide, pyr=2 pyrrolidone) were prepared and structurally characterized. Single crystal X ray diffraction analysis revealed that the complexes contain cyano bridged 3 and [Ln(L) 4(H 2O) 3] 3+ groups. The Ln 3+ is eight coordinate, and is coordinated by seven oxygen atoms of three water molecules and four organic ligands (DMF or pyr). Each terminal CN ligand of the 3- entity is hydrogen bonded to some oxygen atoms of the coordinated water molecules yielding a hydrogen bonded three dimensional network. Crystal data for A: monoclinic, space group P 2(1)/ n , a = 1.7525(4) nm, b =0.8879(2) nm, c =1.9876(4) nm, β =95.92(3)°, V =3.0763(12) nm 3, Z =4, D c= 1.563 mg·m -3 . Complex B crystallizes in the P 1 space group, with lattice parameters of a =1.22720(4) nm, b =1.45550(8) nm, c =0.91310(4) nm, α =92.5869(17)°, β = 90.9569(12)°, γ =89.822(3)°, V =1.62908(13) nm 3, Z =2, D c=1.608 mg·m -3 .展开更多
文摘A 3d 4f complex [La(DMF) 6(H 2O) 3]·2H 2O (DMF=N,N dimethylformamide) was prepared and characterized by single crystal structure analysis. Single crystal X ray diffraction analysis reveals that the present complex contains 3- and [La(DMF) 6(H 2O) 3] 3+ ionic pairs. The La(Ⅲ) ion is nine coordinate, and is coordinated by seven oxygen atoms of three water molecules and six DMF molecules. Each terminal CN ligand of the 3- entity is hydrogen bonded to oxygen atoms of the coordinated and lattice water molecules producing a three dimensional network. Crystal data for [La(DMF) 5(H 2O) 3]·2H 2O (C 24 H 52 CrLaN 12 O 11 =875.69): orthorhombic, space group Cmca, with lattice parameters of a =1.9346(2) nm, b =2.8902(2) nm, c =1.4825(2) nm, V =8.289(2) nm 3, Z =8, S =1.074, ρ calc =1.403 g·cm -3 , R 1=0.046, wR 2=0 117 based on 244 parameters for 5083 observed ( I >2 σ ( I )) reflections.
文摘Two cyano bridged dimeric 4f 3d complexes [Nd(DMF) 4(H 2O) 3Co(CN) 6]·H 2O (A) and [Sm(pyr) 4(H 2O) 3Cr(CN) 6]·2H 2O (B) (DMF=N,N dimethylformamide, pyr=2 pyrrolidone) were prepared and structurally characterized. Single crystal X ray diffraction analysis revealed that the complexes contain cyano bridged 3 and [Ln(L) 4(H 2O) 3] 3+ groups. The Ln 3+ is eight coordinate, and is coordinated by seven oxygen atoms of three water molecules and four organic ligands (DMF or pyr). Each terminal CN ligand of the 3- entity is hydrogen bonded to some oxygen atoms of the coordinated water molecules yielding a hydrogen bonded three dimensional network. Crystal data for A: monoclinic, space group P 2(1)/ n , a = 1.7525(4) nm, b =0.8879(2) nm, c =1.9876(4) nm, β =95.92(3)°, V =3.0763(12) nm 3, Z =4, D c= 1.563 mg·m -3 . Complex B crystallizes in the P 1 space group, with lattice parameters of a =1.22720(4) nm, b =1.45550(8) nm, c =0.91310(4) nm, α =92.5869(17)°, β = 90.9569(12)°, γ =89.822(3)°, V =1.62908(13) nm 3, Z =2, D c=1.608 mg·m -3 .
