Triphenylphosphine-supported synthesis of two-dimensional silver(I) complex with (1,3,4-thiadiazole-2,5-diyldithio)diacetic acid

GRAPHICAL ABSTRACT

ABSTRACT

The reaction of dicarboxylate ligand, (1,3,4-thiadiazole-2,5-diyldithio)diacetic acid (H₂tdza) with silver(I) acetate and triphenylphosphine (PPh₃) facilitate the formation of complex [Ag₂(tdza)(PPh₃)₂]_n (1). The complex was characterized by elemental analysis, FT-IR spectroscopy, ¹H-NMR, ¹³C-NMR and ³¹P-NMR spectroscopy, and single crystal X-ray diffraction. Structural analysis revealed that complex 1 has a 2D topologically promising architecture as a result from the formation of 26-membered cyclic ring. The tdza2⁻ ligand in 1 displays unprecedented µ₄-bridging mode which is also the first example for this ligand. The interdigitating arrangement and π-π stacking between 2D arrays stabilized the formation of complex 1.

KEYWORDS:

• 1,3,4-Thiadiazole
• photoluminescence
• silver(I) complex
• 2D-net

Funding

This work was supported by RUI grant 1001/PKIMIA/811260.