Title
From Discrete Molecules To One-Dimensional Coordination Polymers Containing Mn(Ii), Zn(Ii) Or Cd(Ii) Pyridine-2-Aldoxime Building Unit
Keywords
Coordination polymers; Fluorescence properties; Pyridine-2-aldoxime; X-ray
Abstract
The syntheses, spectroscopic characterization and crystal structures for eight coordination compounds [Cd(HCO2)2(pya)2] (1), {[M(bdc)(pya)].1.5DMF}n (M = Mn(II), Zn(II), Cd(II) (2-4), [Zn(SO4)(pya)(H2O)3] (H2O) (5), [(ZnSO4)2(pya)4] DMF.2H2O (6), [Zn(SO4)(pya)(H2O)2]n (7), and [Cd(SO4)(pya)(H2O)]n (8) [pya = pyridine-2-aldoxime, bdc = 1,4-benzenedicarboxylate, DMF = N,N′-dimethylformamide] are reported. Compounds 1-4 and 6 contain two, while 5, 7, and 8 contain one neutral pya ligand coordinated in a chelate mode to the metal center through the N pyridyl and Noxime atoms. The dicarboxylic bdc anions provide an access to 1D polymeric arrays in 2-4. The hybrid sulfates including discrete mononuclear (5), binuclear (6), and 1D polymeric (7, 8) coordination arrays were obtained due to different binding modes of coordinated sulfate anion. While solid state fluorescence of new polymeric compounds 2-4 is similar to that of the H2bdc ligand, a rare dual emission is observed for compounds 7 and 8. According to TD-DFT calculations, emission at 400 and 650 nm originates from nπ* and ππ* states of the pya ligand respectively. © 2013 Elsevier Ltd. All rights reserved.
Publication Date
1-1-2013
Publication Title
Polyhedron
Volume
60
Number of Pages
140-150
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1016/j.poly.2013.05.005
Copyright Status
Unknown
Socpus ID
84878739470 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/84878739470
STARS Citation
Croitor, Lilia; Coropceanu, Eduard B.; Siminel, Anatolii V.; Masunov, Artëm E.; and Fonari, Marina S., "From Discrete Molecules To One-Dimensional Coordination Polymers Containing Mn(Ii), Zn(Ii) Or Cd(Ii) Pyridine-2-Aldoxime Building Unit" (2013). Scopus Export 2010-2014. 7891.
https://stars.library.ucf.edu/scopus2010/7891