Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 28, 2016
Previous Article Next Article

pH-Dependent assembly of three novel inorganic–organic hybrids based on different isopolymolybdates and CuI/II(bbx)n units

Author affiliations

Abstract

Three novel inorganic–organic hybrid compounds based on different types of isopolymolybdates and CuII(bbx) complexes, namely, [Cu2II(bbx)2(β-Mo8O26)]·2H2O (1), [Cu2II(bbx)4(γ-Mo8O26)] (2) and H2[Cu2I(bbx)2(Mo2O8)] (3) (bbx = 1,3-bis(1-imidazolyl)benzene), have been successfully synthesized by adjusting the pH value under hydrothermal conditions. Compound 1, which was hydrothermally prepared at pH = 3.5, exhibits a unique 3D (2,5,6)-connected net with a (43·64·82·10)2(44·68·83)(4)2 topology, constructed by sexadentate Mo8O26)4− anions coordinated to CuII ions of one-dimensional [CuII(bbx)]n chains. When the pH value was adjusted to 4.5, a structurally different complex 2 was obtained. Compound 2 shows a 3D (2,5)-connected framework with an (86·124)2(8)5 topology, constructed by bidentate γ-(Mo8O26)4− polyanions linking 2D layers composed of [CuII(bbx)2]n. Moreover, when the pH value was adjusted to 7.5, an interesting complex 3 was obtained. Compound 3 shows a 2D (4)-connected framework with a (44·62) topology, constructed by bidentate (Mo2O8)4− polyanions linking [Cu2I(bbx)2]n ladder-like double-chains. The (Mo2O8)4− unit has never been observed before, which is composed of two rare distorted {MoO5} tetragonal pyramids connected via edge-sharing. All compounds were characterized by elemental analysis, TG analysis, powder X-ray diffraction, single-crystal X-ray diffraction analysis and solid diffuse reflectance spectroscopy. In addition, the electrochemical properties of compounds 1–3 have been investigated in 1 M H2SO4 aqueous solution. Moreover, compounds 1 and 3 have definite catalytic activities to activate peroxymonosulfate (PMS) in the reduction of methylene blue (MB).

Graphical abstract: pH-Dependent assembly of three novel inorganic–organic hybrids based on different isopolymolybdates and CuI/II(bbx)n units

Back to tab navigation

Supplementary files

Article information


Submitted
06 Apr 2016
Accepted
19 May 2016
First published
19 May 2016

CrystEngComm, 2016,18, 5320-5326
Article type
Paper

pH-Dependent assembly of three novel inorganic–organic hybrids based on different isopolymolybdates and CuI/II(bbx)n units

P. Wu, Q. Xue, X. Dong, Y. Zhang, B. Liu, H. Hu and G. Xue, CrystEngComm, 2016, 18, 5320
DOI: 10.1039/C6CE00776G

Social activity

Search articles by author

Spotlight

Advertisements