A 2D network silver coordination polymer with the multimodal ligand 2-pyrazyl methyl ketazine

A two-dimensional coordination polymer {Ag(PMK)(OTf)•MeCN} n (1) based on multi-modal bridging ligand, namely N,N'-bis[1-(pyrazin-2-yl)ethylidene]-hydrazine or 2-pyrazyl methyl ketazine (PMK), and AgOTf salt has been synthesized and characterized by ESI-MS, 1H-NMR, ATR-IR, and single crystal X-ray diffraction. The PMK shows distinct binding sites, both chelating and monodentate, and bridging modes in 1 where each silver(I) centre is five coordinate, and bound to one bidentate pyrazylketimine and a monodentate pyrazine through the peripheral N atom from another ligand, and also a bridging pyrazine through the peripheral N atom of the adjacent chelating unit from another ligand, and to triflate anion to feature one-dimensional infinite chain. The triflate anions have effectively increased the 1D coordination polymers to a 2D network via H-bonding interactions. These 2D planes are stacked together building up channels (1D tube) in which the acetonitrile solvent molecules reside and form very weak contacts with the triflates and the pyrazylketimine units via C-H•••O and C-H•••N, respectively. In addition, the fluorescent spectrum of 1 in the solid state exhibits two emission maxima at 496 and 522 nm. The ESI-MS, IR, and 1H-NMR confirm the structure. Graphical Abstract: Self-assembly reaction of multimodal ligand (PMK = N,N'-bis[1-(pyrazin-2-yl)ethylidene]-hydrazine) and AgOTf gives unprecedented one-dimensional coordination polymer {Ag(PMK)(OTf)•MeCN} n (1) with distinct coordination modes of the ligand and the solid state fluorescence spectrum. The triflate anions which are weakly coordinated to silver(I) centres in 1, cross-link the chains by intermolecular hydrogen bonding interactions into a 2D network. These 2D planes are stacked together building up square channels (1D tubes) in which the acetonitrile solvent molecules reside.[Figure not available: see fulltext.] © 2011 Springer Science+Business Media, LLC.

Dergi Adı Structural Chemistry
Dergi Cilt Bilgisi 22
Dergi Sayısı 4
Sayfalar 925 - 929
Yayın Yılı 2011
Eser Adı
[dc.title]
A 2D network silver coordination polymer with the multimodal ligand 2-pyrazyl methyl ketazine
Yazar
[dc.contributor.author]
Sengul A.
Yazar
[dc.contributor.author]
Kurt O.
Yazar
[dc.contributor.author]
Buyukgungor O.
Yayın Yılı
[dc.date.issued]
2011
Yayın Türü
[dc.type]
article
Özet
[dc.description.abstract]
A two-dimensional coordination polymer {Ag(PMK)(OTf)•MeCN} n (1) based on multi-modal bridging ligand, namely N,N'-bis[1-(pyrazin-2-yl)ethylidene]-hydrazine or 2-pyrazyl methyl ketazine (PMK), and AgOTf salt has been synthesized and characterized by ESI-MS, 1H-NMR, ATR-IR, and single crystal X-ray diffraction. The PMK shows distinct binding sites, both chelating and monodentate, and bridging modes in 1 where each silver(I) centre is five coordinate, and bound to one bidentate pyrazylketimine and a monodentate pyrazine through the peripheral N atom from another ligand, and also a bridging pyrazine through the peripheral N atom of the adjacent chelating unit from another ligand, and to triflate anion to feature one-dimensional infinite chain. The triflate anions have effectively increased the 1D coordination polymers to a 2D network via H-bonding interactions. These 2D planes are stacked together building up channels (1D tube) in which the acetonitrile solvent molecules reside and form very weak contacts with the triflates and the pyrazylketimine units via C-H•••O and C-H•••N, respectively. In addition, the fluorescent spectrum of 1 in the solid state exhibits two emission maxima at 496 and 522 nm. The ESI-MS, IR, and 1H-NMR confirm the structure. Graphical Abstract: Self-assembly reaction of multimodal ligand (PMK = N,N'-bis[1-(pyrazin-2-yl)ethylidene]-hydrazine) and AgOTf gives unprecedented one-dimensional coordination polymer {Ag(PMK)(OTf)•MeCN} n (1) with distinct coordination modes of the ligand and the solid state fluorescence spectrum. The triflate anions which are weakly coordinated to silver(I) centres in 1, cross-link the chains by intermolecular hydrogen bonding interactions into a 2D network. These 2D planes are stacked together building up square channels (1D tubes) in which the acetonitrile solvent molecules reside.[Figure not available: see fulltext.] © 2011 Springer Science+Business Media, LLC.
Kayıt Giriş Tarihi
[dc.date.accessioned]
2019-12-23
Açık Erişim Tarihi
[dc.date.available]
2019-12-23
Yayın Dili
[dc.language.iso]
eng
Konu Başlıkları
[dc.subject]
Coordination polymer
Konu Başlıkları
[dc.subject]
Crystal structures
Konu Başlıkları
[dc.subject]
Luminescence
Konu Başlıkları
[dc.subject]
Multimodal ligand
Konu Başlıkları
[dc.subject]
Pyrazine
Konu Başlıkları
[dc.subject]
Silver
Haklar
[dc.rights]
info:eu-repo/semantics/closedAccess
ISSN
[dc.identifier.issn]
1040-0400
Sponsor YAYINCI
[dc.description.sponsorship]
2007/2-13-02-10 Fundamental Research Fund of Shandong University Faculty of Arts and Social Sciences, Carleton University
Sponsor YAYINCI
[dc.description.sponsorship]
Acknowledgments We are grateful for financial support from the Zonguldak Karaelmas University (grant no. 2007/2-13-02-10) and the Faculty of Arts and Sciences Ondokuz Mayis University, for the Stoe IPDS-II diffractometer (purchased under grand F.279 of the University Research Fund).
İlk Sayfa Sayısı
[dc.identifier.startpage]
925
Son Sayfa Sayısı
[dc.identifier.endpage]
929
Dergi Adı
[dc.relation.journal]
Structural Chemistry
Dergi Sayısı
[dc.identifier.issue]
4
Dergi Cilt Bilgisi
[dc.identifier.volume]
22
Tek Biçim Adres
[dc.identifier.uri]
https://dx.doi.org/10.1007/s11224-011-9778-z
Tek Biçim Adres
[dc.identifier.uri]
https://hdl.handle.net/20.500.12628/3863
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09.12.2022 tarihinden bu yana
İndirme
1
09.12.2022 tarihinden bu yana
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ligand coordination bridging triflate chelating interactions distinct network monodentate silver(I) peripheral through anions pyrazine ESI-MS planes solvent polymer {Ag(PMK)(OTf)•MeCN} another reside molecules acetonitrile stacked spectrum channels building pyrazylketimine 1H-NMR together one-dimensional maxima emission exhibits fluorescent
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