Hong-Hui Zhuang
Chinese Academy of Sciences
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Featured researches published by Hong-Hui Zhuang.
Chemical Communications | 2003
Chuan-De Wu; Can-Zhong Lu; Xiang Lin; Ding-Ming Wu; Shao-Fang Lu; Hong-Hui Zhuang; Jin-Shun Huang
The one-dimensional double helicate, [NH4][Mo2O4Gd(H2O)6(L-C4H2O6)2] x 4H2O (1), which was synthesized by the reaction of GdCl3, L-tartaric acid and ammonium molybdate in acidified water solution, is built up by two heft-handed single-helical chains, linked up further by eight-coordinated GdIII pieces in an enantiopure left-handed double helical configuration, of which each helix is formed by L-tartrate bridged six-coordinated MoVI atoms.
European Journal of Inorganic Chemistry | 2002
Chuan-De Wu; Can-Zhong Lu; Wen-Bin Yang; Shaofang Lu; Hong-Hui Zhuang; Jin-Shun Huang
The open framework of [Eu2(btc)(H2btc)(H2O)]·4H2O (1), prepared by hydrothermal reaction of EuCl3 with 1,2,4,5-benzenetetracarboxylic anhydride in acidified aqueous solution, is built up from two types of polymeric layers with [EuO6(H2O)]n units as tethers, resulting in nanoporous channels that host water molecules through complex hydrogen bonding. Crystallographic data for 1: monoclinic, P21/n, with a = 10.7562(2) A, b = 7.2075(2) A, c = 17.2180(5) A, β = 97.072(2)° and Z = 2. A study of the temperature dependence of the magnetic susceptibility data reveals that the paramagnetic behavior of 1 is mainly due to the effective spin-orbital coupling between the ground and exited states through the Zeeman perturbation; the magnetic interaction between europium(III) centers is very weak. A study of the electronic properties demonstrates that compound 1 is a semiconductor. A TGA analysis between 30 and 600 °C for 1 suggests that when the lattice water molecules are removed from the network, the skeleton of the network still remains stable up to 150 °C; this is also confirmed by XRPD. (© Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)
Inorganic Chemistry Communications | 2001
Chuan-De Wu; Can-Zhong Lu; Ding-Ming Wu; Hong-Hui Zhuang; Jin-Shun Huang
Abstract The hydrothermal reactions of zinc acetate with 1,2,4,5-benzenetetracarboxylic anhydride (btc) and 4,4′-bipyridine (4,4′-bpy) for [Zn2(4,4′-bpy)(btc)(H2O)2]n·2nH2O (1) or imidazole (imi) for [Zn2(imi)4(btc)(H2O)2]n (2) in the molar ratio of 1:1:1:2000 at 170 °C for five days led to the formation of colorless crystals of 1 and 2. The btc ligand acts as a four-dentate bridging ligand in both compounds to link up zinc atoms into linear chain architectures. In 1, the linear chain subpolymers are further interlinked into a lamellar framework via 4,4′-bpy ligands. Finally, both 1 and 2 are extended into three-dimensional framework via hydrogen bonding.
Inorganic Chemistry Communications | 2002
Chuan-De Wu; Can-Zhong Lu; Shaofang Lu; Hong-Hui Zhuang; Jin-Shun Huang
Abstract The neutral three-dimensional metal coordination polymer [Ni2(4,4′-bpy)2(btc)(H2O)2]n·2nH2O (4,4′-bpy=4,4′-bipyridine, btc=1,2,4,5-benzenetetracarboxylate) has been prepared from hydrothermal reaction of nickel(II) chloride with mixed ligands in basified aqueous solution. The magnetic study reveals that there exist ferromagnetic interactions between nickel(II) atoms. The TGA and XRPD analyses suggest that the crystallization and coordination water molecules play important roles in the formation and stabilization of the polymer and the title compound has potential applications.
Inorganic Chemistry Communications | 2002
Chuan-De Wu; Can-Zhong Lu; Xiang Lin; Hong-Hui Zhuang; Jin-Shun Huang
Abstract Two novel β-octamolybdate supported rare earth metal complexes, [NH4]2[{Gd(DMF)7(β-Mo8O26)}][β-Mo8O26] 1 and [NH4][La(DMF)7(β-Mo8O26)] 2, were obtained from the reaction of (NH4)6Mo7O24·4H2O with LnCl3 (Ln=Gd for 1 and La for 2) at low pH values in the mixed solvents of H2O/DMF or H2O/DMF/CH3CN. The single X-ray diffraction studies reveal that 1 consists of discrete centrosymmetric heterometallic decanuclear [{Gd(DMF)7}2-β-Mo8O26]2+, [β-Mo8O26]4− and two amino cations. In each decanuclear [{Gd(DMF)7}2-β-Mo8O26]2+ cation, the β-octamolybdate moiety is linked to two eight-coordinated GdIII cations, which is coordinated by seven DMF ligands and one terminal oxygen atom of molybdenum center. Compound 2 is built up from DMF coordinated LaIII fragment and β-octamolybdate unit joined together through two terminal oxygen atoms of two molybdenum atoms. Ferromagnetic behavior is observed for 1 from the magnetic measurement, which might result from the exchange interaction through the bridging β-[Mo8O26]4− ligand or the presence of zero-field splitting.
Science China-chemistry | 2001
Chuan-De Wu; Xiang Lin; Rongmin Yu; Wen-Bin Yang; Can-Zhong Lu; Hong-Hui Zhuang
The reaction of an aqueous solution of sodium molybdate with iron powder at low pH (∼0.184) gives rise to the formation of a six-member Mo ring-shape cluster with an Fe (II) encapsulated at the center, [Na4(H2O)7][Fe(OH)6Mo6O18](1), which is further linked to a remarkable three-dimensional network via sodium ions.
Journal of Cluster Science | 2002
Chuan-De Wu; Can-Zhong Lu; Wen-Bin Yang; Shao-Fang Lu; Hong-Hui Zhuang; Jin-Shun Huang
The hydrothermal reaction of H2MoO4, copper acetate and imidazole in water gave rise to the title compound [Cu(imi)2]4[(imi)2Mo8O26]·4H2O (1) as brown crystals. Single X-ray crystal analysis reveals that 1is built up from imidazole coordinated copper fragments and imidazole coordinated octamolybdate units. These dodec-nuclear clusters are assembled into one-dimensional chain through weak copper(I)–copper(I) interactions, and further attached into three-dimensional network in the packing via complex hydrogen bonding.
Inorganic Chemistry Communications | 2000
Huayang Chen; Xiang Lin; Li-Sheng Chi; Can-Zhong Lu; Hong-Hui Zhuang; Jin-Shun Huang
Abstract Two complexes, W 3 Te 7 [(EtO) 2 PS 2 ] 3 I ( 1 ) and W 3 Te 7 [(Pr i O) 2 PS 2 ] 3 I ( 2 ), were prepared via solid state reaction of (RO) 2 PS 2 K with a product of high temperature reaction of elemental W, Te and I 2 . The structures of the two compounds have been determined by X-ray crystallography. Crystal data are 1 : monoclinic, P 2 1 / c , Z =4, a =14.3862(3), b =16.2114(1), c =18.9766(2) A, β =111.655(1)°, V =4113.37(10) A 3 , Z =4, D c =3.435 Mg/m 3 ; 2 : monoclinic, P 2 1 / n , Z =4, a =14.6197(3), b =23.9630(1), c =15.1249(3) A, β =113.688(1)°, V =4852.28(14) A 3 , Z =4, D c =3.027 Mg/m 3 . The results of both the complexes present the first examples of a cluster containing a [W 3 (μ 3 -Te)(μ 2 -Te 2 ) 3 ] 4+ core.
Dalton Transactions | 2003
Chuan-De Wu; Can-Zhong Lu; Shao-Fang Lu; Hong-Hui Zhuang; Jin-Shun Huang
The reactions of LnCl3 (Ln = lanthanide cations), L- or D-tartaric acid and molybdate in acidified aqueous solutions gave rise to the enantiopure left- or right-handed double helical coordination metal compounds, {A[Mo2VIO4LnIII(H2O)6(C4H2O6)2]·4H2O}n (Ln = Sm, Eu, Gd, Ho, Yb, Y; C4H2O6 = L- or D-tartaric acid; A = NH4 or H3O; MoLn represent all complexes), which have been characterized by single X-ray crystal structure analyses, IR, FT-Raman, TGA, XRPD, electric conductivity, EPR and magnetic susceptibility studies. The TGA and XRPD studies for compound MoGd suggest that the backbone is “collapsed” with the removement of aqua ligands and crystallization water molecules. However, it is easily reverted to the original compound after being immersed in water, as confirmed by similar XRPD patterns. The electric conductivity studies for these compounds reveal they are semiconductors. As aforementioned, the conductivity behaviors for the dry sample and reversed sample of MoGd are also very similar, in line with the XPRD results. Study of the magnetic susceptibilities reveal that the magnetic behaviors for MoGd, MoDy, MoHo and MoYb obey the Curie–Weiss law.
Inorganic Chemistry Communications | 2001
Wen-Bin Yang; Can-Zhong Lu; Xiang Lin; Sheng Wang; Hong-Hui Zhuang
Abstract A new defective ring-shaped polyoxomolybdate Na 28 [ Mo VI 112 Mo V 28 O 427 H 14 ( H 2 O ) 56 ]· ca . 300 H 2 O was synthesized from an acidified aqueous solution of Na 2 MoO 4 ·2H 2 O with Na 2 S 2 O 3 ·5H 2 O or NH 2 NH 2 ·2HCl acting as reducing reagents. Its giant tire-like anion, which is formally based on the reported {Mo 154 }-type ring with removal of seven {Mo 2 } 2+ units at certain positions, is built up by fourteen {Mo 8 } units fused with fourteen {Mo 1 } units and seven {Mo 2 } 2+ units.