Hydrothermal Synthesis And Structure Characterization Of Several Inorganic-Organic Hybrid Materials

There are a great many special materials in nature, and one of them is combined by inorganic oxides and organic molecules, by which can produce some outstanding properties. Scientists have already found that the organic component could hugely affect the structure of those inorganic oxides .Then researchers began to attempt to synthesize novel and functional inorganic-organic hybrid materials by combining inorganic oxides and organic molecules together. During the synthesizing process, organic molecules can control and affect the growing of nucleus and the inorganic compounds, by which they can deliver the structure information on the inorganic framework directly. At present, related research mostly focus on five systems: (1) the synthesis by using organic amines as templates ;(2) the synthesis of meso-porous molecular sieve, such as MCM-41; (3) the bionic synthesis of biomimetic materials; (4) the synthesis trough transition metals and metal-oxo cluster;(5) the synthesis of coordination polymers.In this thesis, we dedicated to synthesize inorganic and organic hybrid compounds with novel structures and particular properties, and we also discussed the effect of organic components to inorganic components.In the second chapter, we use DABCO as organic ligand to construct 3 kinds of metal-organic coordination polymer using CuI as the ligand: Cu₃I₄(C₈H₁₇N₂)(1), Cu₇I₄Br₇(C₁₀H₂₂N₂) (2) and CuI(C₃H₃N₆)(3). The crystallographic data of compound 1 is: a=6.8924(14)A, b=10.786(2) A, c=22.779(5)A,β=94.84(3)°, V=1687.4(6) A³, space group: P-1,Z=4. In each structural unit, two Cu atoms are connected by two two-fold coordinations for I atoms, then such two chains are connected by four-fold coordinations for I atoms, consequently there is a octagon built up by four four-fold coordinations for Cu atoms, two two-fold coordinations for I and two four-fold coordinations for I. The crystallographic data of compound 2 is: a=15.053(3)A, b=14.431(3) A, c=38.554(8)A,β=90(3)°, V=8375(3) A³, space group: Pbca,Z=8. In the structure of compound 2, six Cu atoms, three Br atoms and two I atmos form a octahedron nucleus, and each atom in this nucleus is in four-fold coordination; the other one Cu atom, one Br atom and one I atom connected these octahedron nucleuses together to form a catenulate structure, in which the Cu atom is in four-fold coordination, Br and I are both in two-fold coordination. The crystallographic data of compound 3 is: a=4.0725(8)A, b=9.1172(18) A, c=10.904(2)A,β=80.21(3)°, V=388.28(13) A³, space group: P-1,Z=2. In this compound, the Cu atom of each structural unit go together with I atom of the other two structural units to form a linear trapezoid structure, in which Cu atom is in four-fold coordination, I atom is in three-fold coordination. Ultimately, we conclude that the change of the molar ration between DABCO and Cu ions will lead to different products and the change or organic ligands at the same time.In the third chapter, we use ciprofluxac as template to synthesize a planar reticular Zn(H₂PO₄)₂·(C₁₇H₁₈FN₃O₃). Zn(H₂PO₄)₂·(C₁₇H₁₈FN₃O₃) in hydrothermal system. Its crystallographic data is: a=16.5880(10)A, b=8.6393(4) A, c=15.4063(8)A, (3=108.393(3)°, V=2095.07(19) A³, space group: P2(1)/c, Z=4. The H₂PO₄ anions are connected to form a planar reticular structure by four coordination with Zn atom. Six Zn atoms and six H₂PO₄ anions compose of a ring, and ciprofluxac fills in this planar reticular structure. At the end, we detailedly discuss the influence of crystallization time and the solution's pH to the crystallize degree of the final products.