Synthesis, structures, spectroscopies and properties studies of two organotin (IV) carboxylates with 1,4-naphthalenedicarboxylic acid

The complexes [(Ph3Sn)(2)L(ONC3H7)(2)](1) , [(Cy3Sn)(2)L](2) were synthesized using 1,4-naphthalenedicarboxylic acid (H2L) and R3SnOH (R = Ph, Cy) in 1:2 ratio. The crystal structures of complex 1 and 2 were characterized by single crystal X-ray diffraction, the 1D chains of 1 are further linked into a 2D layered structure through hydrogen bonds in 1 . The crystal structure of 2 contains two independent subunits. The Hirshfeld surface analysis manifested they have C-H center dot center dot center dot O hydrogen bond. Fluorescent properties shown the emission peaks at 452 (1) and 412 (2) nm, the fluorescence may be caused by the electron transition inside ligand. In photocatalytic reactions, the UV-absorption peak decreases with time under illumination condition, methylene blue (MB) is completely degraded. The experimental showed the complex 1 was more effective than complex 2 . The NMR (H-1, C-13 and Sn-119) spectroscopies, cyclic voltammetry, thermal stability analysis and PXRD were also investigated. (C) 2021 Elsevier B.V. All rights reserved.

Automated summary

Two complexes were synthesized and characterized, with one forming a layered structure through hydrogen bonds and the other containing two independent subunits with C- H⋅⋅⋅O hydrogen bonds. Fluorescent properties showed different emission peaks, and the UV-absorption peak decreased with time under illumination conditions, with one complex being more effective than the other in photocatalytic reactions.