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Syntheses, crystal structures and properties of three compounds based on the dicarboxylate ligand with S-S flexible linkage

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Title Syntheses, crystal structures and properties of three compounds based on the dicarboxylate ligand with S-S flexible linkage
 
Creator Wang, Xin
Wang, Ying
Guan, Lei
 
Subject Synthesis
Fluorescence
Compound
Flexible chain
 
Description 1545-1550
Three new compounds, [MnL(2,2΄-bipy)2]n·1.5nH2O (1), Co(4,4ˊ-bipy)(H2O)4·2HL (2) and 2HL·(4,4ˊ-bipyH)·2H2O (3)
(H2L = 2,2΄-dithiosalicylic acid, 2,2΄-bipy = 2, 2΄-bipyridine, 4,4΄-bipy = 4,4΄-bipyridine), have been synthesized by
hydrothermal and evaporation methods. Structural determination reveals that compound 1 shows a one-dimensional chain
structure with L2- ligands adopting bridging coordination modes, compound 2 features a mononuclear structure with
uncoordinated HL- anions, balancing the charges, compound 3 is a new inclusion compound of HL- anions and 4,4ˊ-bipyH
cation with π-π stacking interactions. In compounds 1-3, the flexible S-S linkages can make H2L ligands present different
conformations of dihedral angles between the terminal benzene rings. The S-O hypervalent bonds can stabilize the
conformations. Thermogravimetric analyses and fluorescence measurements of compounds 1 and 2 have been performed.
Compounds 1 and 2 exhibit broad blue fluorescent emission bands at 420 nm and 424 nm, respectively.
 
Date 2021-12-16T10:00:24Z
2021-12-16T10:00:24Z
2021-12
 
Type Article
 
Identifier 0975-1017 (Online); 0971-4588 (Print)
http://nopr.niscair.res.in/handle/123456789/58617
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJC-A Vol.60A(12) [December 2021]