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Keggin and Anderson type new complex synthesis and crystal structure

Author: ChengHongWei
Tutor: YouWanSheng
School: Liaoning Normal University
Course: Inorganic Chemistry
Keywords: Polyoxometalate Keggin Anderson Inorganic - organic hybrid framework Crystal structure
CLC: O621.3
Type: Master's thesis
Year: 2011
Downloads: 42
Quote: 0
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Abstract


In this thesis, the Keggin type or Anderson heteropoly acid, transition metal ions and organic ligands as building blocks, designed and synthesized not been reported so far based on the polyoxometalate the inorganic - organic hybrid compound, by elemental analysis, XPRD and IR, TG and single crystal X-ray analysis techniques to determine the structure of the compound. The main results are as follows: 1. Keggin anion the [PMo-(11) Vo 40 ] 4 - , [SIW 12 O < sub> 40 ] 4 - , [GeW 12 O 40 ] 4 - and [PW 11 VO 40 ] 4 - as a template to synthesize the compounds containing metal - oxide inorganic - organic hybrid cation framework. [Mo 2 V 2 O 9 (bpy) 6 ] [PMo 11 VO 40 ] (1) [Mo 2 V 2 O 9 (bpy) 6 ] [SiW 12 O 40 ] (2) [Mo 2 V 2 O 9 (bpy) 6 ] [GeW 12 O 40 ] (3) [Mo 2 V 2 O 9 (bpy) 6-] [PW11VO 40 ] (4) compounds 1-4 with each other qualitative isomers, they are based on the the Keggin anion as a template for the formation of the compound. The body frame is made of molybdenum and vanadium isobutyl metal - oxide, arrangement VO-Mo-O-Mo-OV, showing limited 1D \Beta-Anderson type anion {Cr (OH) 6 the Mo 6 the O 18 } 3 - building blocks, the use of room temperature synthesis method, synthesis of one kinds of Ag (I) complexes; three kinds of transition metal (Mn (II) was synthesized under hydrothermal conditions, the introduction of the 4,4 '-bpy ligand, Ni (II ), Co (II)) coordination compounds. [{Ag (C 6 H 5 NO 2 ) 2 } 2 ] [Ag {Cr (OH) 6 Mo 6 O 18 } (H 2 O) 2 ] (C 6 H 5 NO 2 ) 2 (5) (NH 4 ) 4 [Mn {Cr (OH) 6 Mo 6 O 18 } 2 ] (4,4 '-bpy) 2 (6) NH 4 [Ni {Cr (OH) 6 Mo 6 O 18 } (H 2 O) 2 ] (4,4 '-bpy) · 4H 2 O (7) NH 4 [Co {Cr (OH) 6 Mo 6 O 18 } (H 2 O) 2 ] (4,4 '-bpy) · 4H 2 O (8) 4 The main framework compounds are by beta-Anderson-type anion 6 Mo {Cr (OH) 6 the O 18 } - and transition metal ions to build. Compound 5 contains two crystallographic independent Ag atoms (AG1, Ag2) the AG1 with {Cr (OH) 6 the Mo 6 O 18 } 3 - bridged form a 1D chain; Ag 2 with isonicotinic acid bridge even eventually form a {Ag 2 } 2 cluster. Compound 6, Mn shows the six-coordinated environment, six with atomic oxygen from the surrounding 4 {Cr (OH) 6 Mo 6 the O 18 } 3 - anion, showing a 1D band structure. Compounds 7 and 8 each other the isomeric, Ni 2 / the Co 2 and {Cr (OH) 6 Mo 6 O 18 } 3 - bridging a 2D layer.

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