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Articles

Synthesis, crystal structure, and fluorescence property of cobalt(II) and manganese(II) complexes based on N,N′-bis (4-pyridylmethyl)naphthalene diimide

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Pages 1017-1022 | Received 09 Jul 2016, Accepted 30 Dec 2016, Published online: 06 Mar 2017
 

ABSTRACT

Two complexes, {[Co(4-pmntd)(H2O)4·Co(4-pmntd)(H2O)4]·4(NO3)·3H2O}n (1), {[Mn(4-pmntd)(SCN)2]·2(C2H5OH)}n (2), (4-pmntd = N,N′-bis(4-pyridylmethyl)naphthalene diimide) were synthesized and characterized by elemental analyses, IR spectroscopy, thermogravimetric analyses, and X-ray single-crystal structure analysis. Complex 1 consisting of two kinds of 1D polymeric chains: 1D zigzag chain [Co(4-pmntd)(H2O)4] (A) and 1D linear chain [Co(4-pmntd)(H2O)4] (B), adjacent zigzag and linear chains in different layers are arranged in a cross-like fashion, resulting in a 3D plywood-like array. Complex 2 is a non-interpenetrating (4, 4)-sql net structure in edge-to-edge arrangement containing 1D channels. Their structural diversity, thermal stability, and fluorescence property of complexes 1 and 2 were investigated. Complex 2 shows enhanced fluorescence intensity at 420 nm upon the addition of 2 equiv of SCN anion with respect to complex 2. The complex 2 is promising for detecting SCN anion.

Funding

This work was financially supported by the National Natural Science Foundation of China (No. 21403191), Natural Science Foundation of Guangdong Province (No. 2014A030307010), and Special funds for public welfare research and capacity building in Guangdong Province (No. 2015A010105031, 2016A010103042).

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