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Two New 2D POMs ‐Based Inorganic‐Organic Hybrid Compounds Constructed from the Proline and 4,4’‐Bipy Mixed Ligands
Author(s) -
Ren Yanli,
Yang Dandan,
Li Na,
Huang Rudan
Publication year - 2017
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201600656
Subject(s) - chemistry , electrochemistry , powder diffraction , thermogravimetric analysis , crystallography , x ray photoelectron spectroscopy , single crystal , proline , yield (engineering) , diffraction , crystal structure , stereochemistry , electrode , organic chemistry , amino acid , chemical engineering , biochemistry , materials science , physics , optics , engineering , metallurgy
Two new 2D hybrid compounds derived from Keggin‐type [ BW 12 O 40 ] 5− anion, proline and 4,4’‐bipy were synthesized, namely, [ Co II 2 (proline)(4,4’‐bipy)( H4 ,4’‐bipy) 2 ( OH )( H 2 O ) 2 ][ BW 12 O 40 ]• 3H 2 O ( 1 ) and [ Co II 3 (proline) 2 (4,4’‐ bipy) 2 ( H4 ,4’‐bipy) 4 ( OH ) 2 ( H 2 O ) 4 ][ BW 12 O 40 ] 2 • 6H 2 O ( 2 ). They are characterized by single‐crystal X‐ray diffraction, FT‐IR spectra, powder X‐ray diffraction ( PXRD ), thermogravimetric analyses ( TGA ) and XPS spectra. All compounds represent 2D framework, but the structures possess some distinctions to a certain degree. In compound 1 , 1D wave‐like chains are formed. The chains and polyanions are stacked each other in an ABAB fashion to yield a 2D network. However, compared with compound 1 , compound 2 exhibits the same construction except for the opposite arrangement mode. Moreover, their electrochemical behaviors and fluorescence properties have been investigated. The electrochemical properties show that compounds 1 , 2 display good electrocatalytic activities for the reduction of nitrite.