A new sodium indium phosphate Na 6In 4[P 7O 24(OH) 5]·4H 2O was synthesized under a mild hydrothermal condition and its structure was determined by means of single-crystal X-ray diffraction methods. The title com...A new sodium indium phosphate Na 6In 4[P 7O 24(OH) 5]·4H 2O was synthesized under a mild hydrothermal condition and its structure was determined by means of single-crystal X-ray diffraction methods. The title compound crystallizes in a hexagonal system, space group P6 3, with a= 0.950 23(5) nm, b=0.950 23(5) nm, c=1.694 2(2) nm, α=90°, β=90°, γ=120°, V=1.324 8(2) nm 3, Z=8, structure refined to R=0.052 8 and wR=0.116 5 for 2 134 independent observed reflections. The three-dimensional network structure consists of helical chains formed by apex-sharing polyhedra. The connection of the chains results in 4- and 8-polyhedral rings and cages centered by three indium metal connecting oxygen atoms formed by three 4-rings. The three-connected oxygen atom is firstly observed in indium phosphate systems.展开更多
A new modification of tellurite phosphate, β-Te3O3（PO4）2, has been synthesized under hydrothermal conditions and its crystal structure was determined by single-crystal X-ray diffraction. It crystallizes in the mono...A new modification of tellurite phosphate, β-Te3O3（PO4）2, has been synthesized under hydrothermal conditions and its crystal structure was determined by single-crystal X-ray diffraction. It crystallizes in the monoclinic space group P21/n（No. 14）, with a = 11.115（5）, b = 4.7033（19）, c = 17.287（7） ？, β = 106.086（5）°, V = 868.3（6） ？3, Z = 4, P2 Te3 O11, Mr = 620.74, Dc = 4.748 g/cm3, μ（Mo Kα） = 10.438 mm–1 and F（000） = 1096. The final full-matrix least-squares refinement converged to R = 0.0227, wR = 0.0534 for 1984 observed reflections with I 〉 2σ（I）, and R = 0.0240, w R = 0.0540 for all data（2070） and S = 1.117. β-Te3O3（PO4）2 is polymorphic with the known α-Te3O3（PO4）2（Weil H. M. et al. Z. Anorg. Allg. Chem. 2003, 629, 1068-1072）. The crystal structure of β-Te3O3（PO4）2 features a three-dimensional（3D） network composed of Te6 O2220-hexanuclear clusters interconnected by PO4 groups. Te6 O22 hexanuclear cluster is built from three Te2 O8 dimers（edge-sharing TeO5 square pyramids） linked to each via sharing O-corners. The structure difference between α-and β-forms of Te3O3（PO4）2 lies in the polymerization of tellurite oxides TenOm. 1D infinite 1∞{[Te3 O11]10-} single chains are presented in α-Te3O3（PO4）2, while 0D discrete Te6 O22 hexanuclear clusters are observed for β-Te3O3（PO4）2. Moreover, thermal analyses, infrared spectra and UV-Vis-NIR diffuse reflectance are also presented.展开更多
The hydroxy yttrium hexaborate,Y[B2O3（OH）]3,has been synthesized under mild hydrothermal conditions at 458 K.The crystal structure was solved and refined from single-crystal X-ray diffraction.It adopts a trigonal sp...The hydroxy yttrium hexaborate,Y[B2O3（OH）]3,has been synthesized under mild hydrothermal conditions at 458 K.The crystal structure was solved and refined from single-crystal X-ray diffraction.It adopts a trigonal space group R3c（No.161） with a = 8.3942（4）,c = 20.6484（12） ,V = 1260.03（12） 3,YB6H3O12,Mr = 348.79,Z = 6,Dc = 2.758 g/cm3,F（000） = 1008,μ = 7.015 mm-1,R = 0.0321 and wR = 0.0772.Its crystal structure is made up of six-membered rings,alternating three-connected [BO3（OH）] tetrahedra and planar [BO3] trigonal groups,which are interconnected with each other by sharing their common oxygen corners to form a three-dimensional framework structure with six-membered ring channels that are occupied by the yttrium atoms and run along the c axis.FT-IR,Raman,and TG-DTA results are also presented.展开更多
文摘A new sodium indium phosphate Na 6In 4[P 7O 24(OH) 5]·4H 2O was synthesized under a mild hydrothermal condition and its structure was determined by means of single-crystal X-ray diffraction methods. The title compound crystallizes in a hexagonal system, space group P6 3, with a= 0.950 23(5) nm, b=0.950 23(5) nm, c=1.694 2(2) nm, α=90°, β=90°, γ=120°, V=1.324 8(2) nm 3, Z=8, structure refined to R=0.052 8 and wR=0.116 5 for 2 134 independent observed reflections. The three-dimensional network structure consists of helical chains formed by apex-sharing polyhedra. The connection of the chains results in 4- and 8-polyhedral rings and cages centered by three indium metal connecting oxygen atoms formed by three 4-rings. The three-connected oxygen atom is firstly observed in indium phosphate systems.
基金Supported by the National Natural Science Foundation of China(No.21201144)the Natural Science Foundation of Fujian Province(No.2018J07006)
文摘A new modification of tellurite phosphate, β-Te3O3（PO4）2, has been synthesized under hydrothermal conditions and its crystal structure was determined by single-crystal X-ray diffraction. It crystallizes in the monoclinic space group P21/n（No. 14）, with a = 11.115（5）, b = 4.7033（19）, c = 17.287（7） ？, β = 106.086（5）°, V = 868.3（6） ？3, Z = 4, P2 Te3 O11, Mr = 620.74, Dc = 4.748 g/cm3, μ（Mo Kα） = 10.438 mm–1 and F（000） = 1096. The final full-matrix least-squares refinement converged to R = 0.0227, wR = 0.0534 for 1984 observed reflections with I 〉 2σ（I）, and R = 0.0240, w R = 0.0540 for all data（2070） and S = 1.117. β-Te3O3（PO4）2 is polymorphic with the known α-Te3O3（PO4）2（Weil H. M. et al. Z. Anorg. Allg. Chem. 2003, 629, 1068-1072）. The crystal structure of β-Te3O3（PO4）2 features a three-dimensional（3D） network composed of Te6 O2220-hexanuclear clusters interconnected by PO4 groups. Te6 O22 hexanuclear cluster is built from three Te2 O8 dimers（edge-sharing TeO5 square pyramids） linked to each via sharing O-corners. The structure difference between α-and β-forms of Te3O3（PO4）2 lies in the polymerization of tellurite oxides TenOm. 1D infinite 1∞{[Te3 O11]10-} single chains are presented in α-Te3O3（PO4）2, while 0D discrete Te6 O22 hexanuclear clusters are observed for β-Te3O3（PO4）2. Moreover, thermal analyses, infrared spectra and UV-Vis-NIR diffuse reflectance are also presented.
基金Supported by the National Natural Science Foundation of China (No.40972035)
文摘The hydroxy yttrium hexaborate,Y[B2O3（OH）]3,has been synthesized under mild hydrothermal conditions at 458 K.The crystal structure was solved and refined from single-crystal X-ray diffraction.It adopts a trigonal space group R3c（No.161） with a = 8.3942（4）,c = 20.6484（12） ,V = 1260.03（12） 3,YB6H3O12,Mr = 348.79,Z = 6,Dc = 2.758 g/cm3,F（000） = 1008,μ = 7.015 mm-1,R = 0.0321 and wR = 0.0772.Its crystal structure is made up of six-membered rings,alternating three-connected [BO3（OH）] tetrahedra and planar [BO3] trigonal groups,which are interconnected with each other by sharing their common oxygen corners to form a three-dimensional framework structure with six-membered ring channels that are occupied by the yttrium atoms and run along the c axis.FT-IR,Raman,and TG-DTA results are also presented.
