Syntheses,Structures And Properties Of Carbonyl Metal Derivatives Of Polyoxotungstates And Polyoxovanadates | Posted on:2017-09-28 | Degree:Master | Type:Thesis | Country:China | Candidate:J Li | Full Text:PDF | GTID:2311330488451220 | Subject:Chemistry | Abstract/Summary: | PDF Full Text Request | By the method of conventional aqueous solution, from simple tungstic acid salt and polyoxometalate precursor through constantly exploring reaction conditions, six novel type and structure of the polyoxotungstates and isopolyoxovanadates-based metal carbonyl derivatives were successfully synthesized, which were characterized by IR, X-ray single crystal diffraction, elemental analysis, UV-Vis and X-ray powder diffraction. At the same time, some of the compounds were discussed the electrochemical behavior and catalytic properties.1. A novel monolacunary Linqvist type isotungstate-supported metal carbonyl derivative KH[?CH3?4N]3[{Re?CO?3}4??2-OH???3-O?(W5O18)]·6H2O?1? has been synthesized for the first time, whose anionic [W5O18]6- carrys four rhenium carbonyl groups. And the compound carrys the highest number of metal carbonyl groups in isotungstate-supported metal carbonyl derivative.2. A novel [W8O30]12- based metal carbonyl derivative Na4H2[{Re?CO?3}2{Re?CO?3?H2O?}2(H2W8O30)]·19H2O?2? has been synthesized, whose polyoxoanion exists a crystallography inversion center.3. A novel heterpolytungstate-supported metal carbonyl derivative [?CH3?4N]H11[{Mn?CO?3}2?H2O?2?W2O5?(HBW11O39)2]·45H2O?3? has been synthesized. The polyoxoanion of the compound consisted of two {HBW11O39} connect a manganese carbonyl unit respectively through two {WO6} units together.4. A novel kind of sandwich type heterpolytungstate-supported metal carbonyl derivative K2H2[?CH3?4N]3[{Re?CO?3}2??-OH?(HBW11O39)]·12H2O?4? has been synthesized. There are two rhenium carbonyl units in the anonic, which embedded into the vacant polyoxometalate by four Re-O-W bonds.5. Two novel vanadium oxygen clusters-based metal carbonyl derivatives: H2[Mn?CO?3?C3H3N2?3]2[V2O7]·4H2O?5? and [Mn?CO?3?C3H3N2?3]6[V10O28]·3H2O?6? has been synthesized for the first time, both of them represent the good activity in catalytic CO2 cycloaddition reaction. | Keywords/Search Tags: | Metal carbonyls, Polyoxometalates, Synthesis, Structure, Catalysis | PDF Full Text Request | Related items |
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