Syntheses, Structures, and Luminescence of Three Manganese Coordination Polymers With Flexible Bistriazole and Rigid Benzenedicarboxylate Ligands

Abstract

Three Mn(II) coordination polymers, {[Mn(bte)_0.5(bdc)(H₂O)]•H₂O} (1), {[Mn(bte)(I-bdc)(H₂O)]•H₂O}_n (2), and [Mn(btp)(bdc)(H₂O)]•2.5H₂O (3), were synthesized (bte = 1,2-bis(1,2,4-triazol-1-yl)ethane, btp = 1,3-bis(1,2,4-triazol-1-yl)propane, bdc = 1,3-benzenebiscarboxylate, I-bdc = 5-iodoisophthalate). 1 is an unusual (3,4)-connected 2D network with the point symbol of (4²•6)(4²•6³•8). 2 is an independent 1D metal-organic nanotube (MONT). The combination of rings and two chains forms independent 1D MONT. The I groups of each 1D MONT polythread into two adjacent 1D MONTs to form a (1D → 2D) polythreaded array. 3 shows the undulated 2D (4,4) network and a double-layer hydrogen bonding network. The luminescence and thermal stability were investigated.

Keywords:

• manganese coordination polymer
• structure
• luminescence
• bis(triazole)
• benzenedicarboxylate

Supplementary Material

Crystallographic data for the structural analyses have been deposited with the Cambridge Crystallographic Data Centre with CCDC reference numbers CCDC 922007–922009.

Funding

The authors acknowledge the financial support and grant from the Natural Science Foundation of China (No. 21171126), the Priority Academic Program Development of Jiangsu Higher Education Institutions, and the State and Local Joint Engineering Laboratory for Functional Polymeric Materials.