Synthesis, Crystal Structure, and Luminescence of Cadmium(II) and Silver(I) Coordination Polymers Based on 1,3-Bis(1,2,4-triazol-1-yl)adamantane
oleh: Roman D. Marchenko, Taisiya S. Sukhikh, Alexey A. Ryadun, Andrei S. Potapov
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2021-09-01 |
Deskripsi
Coordination polymers with a new rigid ligand 1,3-bis(1,2,4-triazol-1-yl)adamantane (L) were prepared by its reaction with cadmium(II) or silver(I) nitrates. Crystal structure of the coordination polymers was determined using single-crystal X-ray diffraction analysis. Silver formed two-dimensional coordination polymer [Ag(L)NO<sub>3</sub>]<i><sub>n</sub></i>, in which metal ions are linked by 1,3-bis(1,2,4-triazol-1-yl)adamantane ligands, coordinated by nitrogen atoms at positions 2 and 4 of 1,2,4-triazole rings. Layers of the coordination polymer consist of rare 18- and 30-membered {Ag<sub>2</sub>L<sub>2</sub>} and {Ag<sub>4</sub>L<sub>4</sub>} metallocycles. Cadmium(II) nitrate formed two kinds of one-dimensional coordination polymers depending on the metal-to-ligand ratio used in the synthesis. Coordination polymer [Cd(L)<sub>2</sub>(NO<sub>3</sub>)<sub>2</sub>]<i><sub>n</sub></i> was obtained in case of a 1:2 M:L ratio, while for M:L = 2:1 product {[Cd(L)(NO<sub>3</sub>)<sub>2</sub>(CH<sub>3</sub>OH)]ยท0.5CH<sub>3</sub>OH}<i><sub>n</sub></i> was isolated. All coordination polymers demonstrated ligand-centered emission near 450 nm upon excitation at 370 nm.