Construction of a 3-D pillar-layered coordination polymer from an Sql network

Abstract

The rational design and systematic synthesis of a “pillar-layered” coordination polymer was carried out using a rigid carboxylic acid, 2-hydroxy-trimesic acid (H₄L), resulting in two coordination polymers, {[Zn₄(L)₂(DMA)₃(H₂O)₅]·H₂O} _n (1) and [Zn₄(L)₂(pdp)(H₂O)₄] _n (2). Compound 1 is a two-dimensional (2-D) network containing tetranuclear zinc clusters, deprotonated H₄L ligands and DMA solvent molecules. The introduction of trans-1,2-bis(4-pyridyl)ethylene) (pdp) replaced solvent molecules in 1, forming pillars between the 2-D sheets to furnish 2. The water stability of 2 is higher than that of 1. The powder X-ray diffraction, thermal stabilities, and solid-state luminescence properties also have been investigated for 1 and 2.

KEYWORDS:

• Tetranuclear
• crystal structure
• water stability
• luminescence

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This article was funded by National Natural Science Foundation of China.