Complexes of non-lacunary Keggin- and Dawson-type polyoxometalates with Pb(<scp>ii</scp>): formation of 1D coordination polymers with different bonding modes

Udalova, L. I.; Adonin, Sergey A.; Abramov, Pavel A.; Korolkov, Ilya V.; Yunoshev, A. S.; Plyusnin, P. E.; Sokolov, Maxim N.

doi:10.1039/c6nj02155g

Cited by 9 publications

(3 citation statements)

References 45 publications

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“…The [Pb(DMF) 7 ] 2+ cation is formed by the coordination of Pb 2+ ions with seven DMF molecules. The bond length of Pb−O bond is in the range of 2.52–2.81 Å, which is close to that of 2.34–2.82 Å in the literature . The distance between Pb 2+ and O d from [SiW 12 O 40 ] 4− is slightly longer (3.07 Å) than the reported values in the literature (2.66–2.89 Å) .…”

Section: Resultssupporting

confidence: 83%

“…The bond length of Pb−O bond is in the range of 2.52–2.81 Å, which is close to that of 2.34–2.82 Å in the literature . The distance between Pb 2+ and O d from [SiW 12 O 40 ] 4− is slightly longer (3.07 Å) than the reported values in the literature (2.66–2.89 Å) . This indicates that the electrostatic attraction is dominant between [Pb(DMF) 7 ] 2+ and [SiW 12 O 40 ] 4− .…”

Section: Resultssupporting

confidence: 81%

“…Although many studies have been reported on POM‐based hybrid materials since the first case of K 7 [GaPbW 11 O 39 ]·16H 2 O was published in 1982, there are few works that focus on lead complex modified POMs . Due to that, POMs and crystallized Pb(II)‐organic complexes have shown photochromic properties, respectively; herein, we are interested to explore new Pb(II)‐complex modified polyoxometalate as new crystalline photochromic materials.…”

Section: Introductionmentioning

confidence: 99%

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Crystal Structure and Reversible Photochromism of Pb(II)‐N,N‐Dimethylformamide Modified Keggin‐Type Polyoxometalates

Pang

Zhou²,

Li³

et al. 2019

Crystal Research and Technology

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have been demonstrated in this work. Both 1 and 2 are characterized by X-ray single crystal diffraction, Fourier transform infrared (FTIR), and UV-vis spectra, and elemental analyses. The crystal structure analysis indicates that compound 1 is composed of Pb(II)-DMF complex and Keggin-type [SiW 12 O 40 ] 4− polyoxoanion, in which the Pb 2+ coordinates to the polyoxoanion by different Pb−O bonds, while compound 2 is composed of [Pb(DMF) 4 (H 2 O) 2 ] 2+ , dimeric [Pb 2 ( 2 -DMF) 2 (DMF) 8 ] 4+ cations, and two kinds of Keggin-type [PW 12 O 40 ] 2− polyoxoanions. By ultraviolet irradiation, both 1 and 2 display the reversible color change from white (for 1) or light yellow (for 2) to blue, which can be applied as new crystalline photochromic materials. Upon heating, the blue color of the two compounds can be recovered within 5 min. The successful syntheses of compounds 1 and 2 provide a new route for the design and synthesis of reversible photochromic crystalline materials.

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Section: Resultssupporting

confidence: 83%

Section: Resultssupporting

confidence: 81%