The ionothermal synthesis of a new 3-D framework based on classic β-[Mo8O26]4− anions. Issue 2 (17th January 2020)

• Record Type: Journal Article
• Authors: Lu, Kun; Zhu, Zihan; Peng, Lin; Fu, Hai; Wang, Xinlong; Wang, Enbo
• Is Part Of: Journal of coordination chemistry. Volume 73:Issue 2(2020)
• Page Start: 255
• Page End: 265
• Publication Date: 2020-01-17
• Subjects: Ionothermal synthesis -- 3-D framework -- adsorption -- proton conduction -- luminescence; Coordination compounds -- Periodicals; 541.2242
• DOI: 10.1080/00958972.2020.1728745
• Languages: English
• ISSNs: 0095-8972

Abstract

Abstract: An unusual metal-organic framework, {H[Ag(I)L][Mo(VI)4 O13 ]}n (1 ) (L=(4-((1H-1, 2, 4-triazol-1-yl)methyl)phenyl)methanol)), has been obtained under ionothermal conditions. According to the single-crystal X-ray diffraction analysis, 1 is a new 3-D framework based on β -[Mo8 O26 ] 4− type polymolybdate anions with two kinds of channels (A and B) along the b -axes and c -axes in the framework. The neighboring inorganic Mo8 -Ag chains are linked by the organic ligands through the Ag centers resulting in 2-D layers. These adjacent 2-D layers extend into a 3-D framework through Ag1 nodes and β -[Mo8 O26 ] 4− anions, respectively, resulting in a topological symbol (6 4 · 8 2 )2 (6 4 · 8 2 ). In addition, the gas adsorption, proton conduction and luminescent properties of 1 are also discussed in detail. Moreover, the electrochemical impedance spectroscopy (EIS) measurements show a conductivity (1.9 × 10 −4 S cm −1 at 65 °C and 95% relative humidity (RH)), with an activation energy of 0.41 eV for 1 . The mechanism of proton conduction for 1 is proved to be the vehicular mechanism. Graphical Abstract: