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Structures and Spectroscopy Studies of Two M(II)-Phosphonate Coordination Polymers Based on Alkaline Earth Metals (M = Ba, Mg)
Joint Authors
Yang, Xiao-Jing
Kan, Yu-He
Ma, Kui-Rong
Wei, Chun-Li
Zhang, Yu
Cong, Ming-Hui
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-11-28
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The two examples of alkaline-earth M(II)-phosphonate coordination polymers, [Ba2(L)(H2O)9]·3H2O (1) and [Mg1.5(H2O)9]·(L-H2)1.5·6H2O (2) (H4L = H2O3PCH2N(C4H8)NCH2PO3H2), N,N′-piperazinebis(methylenephosphonic acid), (L-H2 = O3PH2CHN(C4H8)NHCH2PO3) have been hydrothermally synthesized and characterized by elemental analysis, FT-IR, PXRD, TG-DSC, and single-crystal X-ray diffraction.
Compound 1 possesses a 2D inorganic-organic alternate arrangement layer structure built from 1D inorganic chains through the piperazine bridge, in which the ligand L−4 shows two types of coordination modes reported rarely at the same time.
In 1, both crystallographic distinct Ba(1) and Ba(2) ions adopt 8-coordination two caps and 9-coordination three caps triangular prism geometry structures, respectively.
Compound 2 possesses a zero-dimensional mononuclear structure with two crystallographic distinct Mg(II) ions.
Free metal cations [MgO6]n2+ and uncoordinated anions (L-H2)n2- are joined together by static electric force.
Results of photoluminescent measurement indicate three main emission bands centered at 300 nm, 378.5 nm, and 433 nm for 1 and 302 nm, 378 nm, and 434.5 nm for 2 (λex=235 nm), respectively.
The high energy emissions could be derived from the intraligand π∗-n transition stations of H4L (310 nm and 382 nm, λex=235 nm), while the low energy emission (>400 nm) of 1-2 may be due to the coordination effect with metal(II) ions.
American Psychological Association (APA)
Ma, Kui-Rong& Wei, Chun-Li& Zhang, Yu& Kan, Yu-He& Cong, Ming-Hui& Yang, Xiao-Jing. 2012. Structures and Spectroscopy Studies of Two M(II)-Phosphonate Coordination Polymers Based on Alkaline Earth Metals (M = Ba, Mg). Journal of Spectroscopy،Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-467314
Modern Language Association (MLA)
Ma, Kui-Rong…[et al.]. Structures and Spectroscopy Studies of Two M(II)-Phosphonate Coordination Polymers Based on Alkaline Earth Metals (M = Ba, Mg). Journal of Spectroscopy No. 2013 (2013), pp.1-9.
https://search.emarefa.net/detail/BIM-467314
American Medical Association (AMA)
Ma, Kui-Rong& Wei, Chun-Li& Zhang, Yu& Kan, Yu-He& Cong, Ming-Hui& Yang, Xiao-Jing. Structures and Spectroscopy Studies of Two M(II)-Phosphonate Coordination Polymers Based on Alkaline Earth Metals (M = Ba, Mg). Journal of Spectroscopy. 2012. Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-467314
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-467314