Issue 11, 2009

Thermally stable helical chain and octanuclear Ag(I) coordination networks with yellow luminescence

Abstract

The reactions of 2,4,6-tri(2-pyridyl)-1,3,5-triazine (tpt) and Ag(I) ions under solvothermal or solvent evaporation conditions yielded three new coordination complexes with the interesting frameworks: [Ag(tpt)(NO3)]n (1), [Ag2(tpt)(NO3)(PPh3)2(H2O)](NO3)·2H2O (2), [Ag8(tpt)4(NO3)42-CN)2](NO3)2 (3) (PPh3= triphenylphosphine). Complex 1 crystallizes in a chiral space groupP212121, giving a 1D chain and left-handed helical structure which is the first example of metal-tpt complexes with helical chains. Through the π–π interactions and C–H⋯O hydrogen bonding, the 1D chains of 1 further form a 3D supramolecular structure. Dinuclear complex 2 gives a 3D network via intramolecular O–H⋯O and C–H⋯O hydrogen bonding, while the octanuclear complex 3 affords a 2D framework through weak Ag⋯Ag interactions and van der Waals force. Complexes 1 and 3 exhibit high thermal stabilities at 350 and 300 °C, respectively, and both display unusual yellow luminescence in the crystal-state at cryogenic temperature.

Graphical abstract: Thermally stable helical chain and octanuclear Ag(I) coordination networks with yellow luminescence

Supplementary files

Article information

Article type
Paper
Submitted
14 May 2009
Accepted
14 Jul 2009
First published
07 Aug 2009

CrystEngComm, 2009,11, 2529-2535

Thermally stable helical chain and octanuclear Ag(I) coordination networks with yellow luminescence

C. Yan, L. Chen, R. Feng, F. Jiang and M. Hong, CrystEngComm, 2009, 11, 2529 DOI: 10.1039/B909549G

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