采用顶部籽晶溶液法生长Mn Te Mo O6晶体,研究了在不同配比生长溶液中Mn Te Mo O6晶体的实际生长形态,模拟计算了Mn Te Mo O6晶体的理想生长形态,探讨了生长溶液配比对晶体形态的影响,选择的3种生长溶液中Mn Te Mo O6∶Te O2∶Mo O3摩...采用顶部籽晶溶液法生长Mn Te Mo O6晶体,研究了在不同配比生长溶液中Mn Te Mo O6晶体的实际生长形态,模拟计算了Mn Te Mo O6晶体的理想生长形态,探讨了生长溶液配比对晶体形态的影响,选择的3种生长溶液中Mn Te Mo O6∶Te O2∶Mo O3摩尔比分别为1∶2∶2、1∶3∶2和1∶3∶3。结果表明,在3种配比的生长溶液中Mn Te Mo O6晶体的(110)面具有最大的面网密度和最小的生长速率;生长溶液中Te O2和Mo O3的含量和比例影响了晶体在不同方向的生长速率,从而影响到Mn Te Mo O6晶体的实际生长形态。展开更多
RAJ S.Shanmuga Sundara FUN Hoong Kun (X ray Crystallography Unit, School of Physics, Universiti Sains Malaysia 11800 USM, Penang, Malaysia) The complex [Co(Im)6](Cin)2 (Im=imidazole,Cin=cinnamate) was prepared by reac...RAJ S.Shanmuga Sundara FUN Hoong Kun (X ray Crystallography Unit, School of Physics, Universiti Sains Malaysia 11800 USM, Penang, Malaysia) The complex [Co(Im)6](Cin)2 (Im=imidazole,Cin=cinnamate) was prepared by reaction of Co(PhCHCHCOO)2 with imidazole in ethanol. It has been determined by single crystal X ray analyses. The crystals are triclinic, space group , with a=9.7601(3),b=10.5935(3),c=11.3269(2)? ,α =69.948(1),β =71.027(1),γ =62.803(1)° , and Z=1. The crystal structure of the title complex consists of monomeric [Co(Im)6]2＋ cations and cinnamate anions in which the cobalt? ion assumes a centrosymmetric octahedral geometry with the CoN6 chromophore. In the solid state, the complex forms a three dimensional network through N－ H… O hydrogen bonds, the intermolecular hydrogen bonds connect the [Co(Im)6]2＋ cations and cinnamate anions.The cinnamate anions are nearly planar.展开更多
The hydrothermal reaction of NH 4VO 3, CoCl 2·6H 2O, o-phen and H 2O gave a novel two-dimensional layered polyoxovanadate, [Co(o-phen)]V 2O 6·H 2O, which was constructed from {V 2O 6} chains linked by Co(o-p...The hydrothermal reaction of NH 4VO 3, CoCl 2·6H 2O, o-phen and H 2O gave a novel two-dimensional layered polyoxovanadate, [Co(o-phen)]V 2O 6·H 2O, which was constructed from {V 2O 6} chains linked by Co(o-phen) complex fragments. [Co(o-phen)]V 2O 6·H 2O was characterized by IR, TG and single-crystal X-ray diffraction. It crystallizes in monoclinic space group P2(1)/c with a= 0.785 2(9) nm, b=2.118 3(2) nm, c=0.946 3(11) nm, β=112.827(2)°, V=0.145 1(3) nm3, D c=2.074 g/cm3, Z=4, R 1=0.038 8, wR 2=0.094 1.展开更多
文摘采用顶部籽晶溶液法生长Mn Te Mo O6晶体,研究了在不同配比生长溶液中Mn Te Mo O6晶体的实际生长形态,模拟计算了Mn Te Mo O6晶体的理想生长形态,探讨了生长溶液配比对晶体形态的影响,选择的3种生长溶液中Mn Te Mo O6∶Te O2∶Mo O3摩尔比分别为1∶2∶2、1∶3∶2和1∶3∶3。结果表明,在3种配比的生长溶液中Mn Te Mo O6晶体的(110)面具有最大的面网密度和最小的生长速率;生长溶液中Te O2和Mo O3的含量和比例影响了晶体在不同方向的生长速率,从而影响到Mn Te Mo O6晶体的实际生长形态。
文摘RAJ S.Shanmuga Sundara FUN Hoong Kun (X ray Crystallography Unit, School of Physics, Universiti Sains Malaysia 11800 USM, Penang, Malaysia) The complex [Co(Im)6](Cin)2 (Im=imidazole,Cin=cinnamate) was prepared by reaction of Co(PhCHCHCOO)2 with imidazole in ethanol. It has been determined by single crystal X ray analyses. The crystals are triclinic, space group , with a=9.7601(3),b=10.5935(3),c=11.3269(2)? ,α =69.948(1),β =71.027(1),γ =62.803(1)° , and Z=1. The crystal structure of the title complex consists of monomeric [Co(Im)6]2＋ cations and cinnamate anions in which the cobalt? ion assumes a centrosymmetric octahedral geometry with the CoN6 chromophore. In the solid state, the complex forms a three dimensional network through N－ H… O hydrogen bonds, the intermolecular hydrogen bonds connect the [Co(Im)6]2＋ cations and cinnamate anions.The cinnamate anions are nearly planar.
文摘The hydrothermal reaction of NH 4VO 3, CoCl 2·6H 2O, o-phen and H 2O gave a novel two-dimensional layered polyoxovanadate, [Co(o-phen)]V 2O 6·H 2O, which was constructed from {V 2O 6} chains linked by Co(o-phen) complex fragments. [Co(o-phen)]V 2O 6·H 2O was characterized by IR, TG and single-crystal X-ray diffraction. It crystallizes in monoclinic space group P2(1)/c with a= 0.785 2(9) nm, b=2.118 3(2) nm, c=0.946 3(11) nm, β=112.827(2)°, V=0.145 1(3) nm3, D c=2.074 g/cm3, Z=4, R 1=0.038 8, wR 2=0.094 1.
