TY - JOUR
T1 - Two-dimensional extended (4,4)-topological network constructed from tetra-NiII-substituted sandwich-type keggin polyoxometalate building blocks and NiII-organic cation bridges
AU - Zhao, Jun Wei
AU - Li, Bing
AU - Zheng, Shou Tian
AU - Yang, Guo Yu
PY - 2007/12
Y1 - 2007/12
N2 - Three novel inorganic-organic composite polyoxotungstates {[Ni(dap) 2(H2O)]2[Ni(dap)2] 2[Ni4(Hdap)2(α-B-HSiW9O 34)2]} · 7H2O(1), {[Ni(dap) 2(H2O)]2[Ni(dap)2] 2[Ni4(Hdap)2(α-B-HGeW9O 34)2]} · 6H2O(2), and ([Ni(dap) 2(H2O)]2[Ni(dap)2] 2[Ni4-(Hdap)2(α-B-PW9O 34)2]} · 4H2O (3) (dap = 1,2-diaminopropane) have been hydrothermally synthesized and characterized by IR spectra, optical diffuse reflection spectroscopy, elemental analysis, thermogravimetric analysis, and single-crystal X-ray diffraction. Three polyoxotungstates all crystallize in the triclinic space group P1̄, with a = 13.3613(4) Å, b = 13.9821(4) Å, c = 17.0305(5) Å, α = 68.085(10)°, β= 71.179(11)°, γ = 87.876(14)°, Z = 1, R1= 0.0742, wR2 = 0.1692 for 1, a = 13.338(3) Å, b = 13.978(3) Å, c = 17.049(3) Å, α = 68.159(6)°, β= 71.100(8)°, γ = 87.683(9)°, Z = 1, R1= 0.0499, wR 2 = 0.1061 for 2, and a = 13.3570(19) Å b = 13.997(2) Å c = 17.129(2) Å, α = 67.468(4)°, β= 71.986(5)°, γ = 88.698(6)°, Z = 1, R1= 0.0461, wR2 = 0.1254 for 3. Three isostructural polyoxotungstates utilize the two-dimensional structures with inorganic-organic composite surfaces built up from tetra-Ni II-substituted sandwich-type Keggin polyoxometalate building blocks and NiII-dap cation bridges, representing the first (4,4)-connected topological network in polyoxometalate chemistry. Magnetic susceptibility measurements indicate the occurrence of ferromagnetic coupling interactions within the NiII centers for 1 and 2.
AB - Three novel inorganic-organic composite polyoxotungstates {[Ni(dap) 2(H2O)]2[Ni(dap)2] 2[Ni4(Hdap)2(α-B-HSiW9O 34)2]} · 7H2O(1), {[Ni(dap) 2(H2O)]2[Ni(dap)2] 2[Ni4(Hdap)2(α-B-HGeW9O 34)2]} · 6H2O(2), and ([Ni(dap) 2(H2O)]2[Ni(dap)2] 2[Ni4-(Hdap)2(α-B-PW9O 34)2]} · 4H2O (3) (dap = 1,2-diaminopropane) have been hydrothermally synthesized and characterized by IR spectra, optical diffuse reflection spectroscopy, elemental analysis, thermogravimetric analysis, and single-crystal X-ray diffraction. Three polyoxotungstates all crystallize in the triclinic space group P1̄, with a = 13.3613(4) Å, b = 13.9821(4) Å, c = 17.0305(5) Å, α = 68.085(10)°, β= 71.179(11)°, γ = 87.876(14)°, Z = 1, R1= 0.0742, wR2 = 0.1692 for 1, a = 13.338(3) Å, b = 13.978(3) Å, c = 17.049(3) Å, α = 68.159(6)°, β= 71.100(8)°, γ = 87.683(9)°, Z = 1, R1= 0.0499, wR 2 = 0.1061 for 2, and a = 13.3570(19) Å b = 13.997(2) Å c = 17.129(2) Å, α = 67.468(4)°, β= 71.986(5)°, γ = 88.698(6)°, Z = 1, R1= 0.0461, wR2 = 0.1254 for 3. Three isostructural polyoxotungstates utilize the two-dimensional structures with inorganic-organic composite surfaces built up from tetra-Ni II-substituted sandwich-type Keggin polyoxometalate building blocks and NiII-dap cation bridges, representing the first (4,4)-connected topological network in polyoxometalate chemistry. Magnetic susceptibility measurements indicate the occurrence of ferromagnetic coupling interactions within the NiII centers for 1 and 2.
UR - http://www.scopus.com/inward/record.url?scp=37549042324&partnerID=8YFLogxK
U2 - 10.1021/cg700783b
DO - 10.1021/cg700783b
M3 - Article
AN - SCOPUS:37549042324
SN - 1528-7483
VL - 7
SP - 2658
EP - 2664
JO - Crystal Growth and Design
JF - Crystal Growth and Design
IS - 12
ER -