Diverse Structures Based on a Heptanuclear Cobalt Cluster with 0D to 3D Metal-Organic Frameworks: Magnetism and Application in Batteries

作者：Qin, Bo-Wen; Huang, Ke-Cheng; Zhang, Yu; Zhou, Lei; Cui, Zheng; Zhang, Kuo; Zhang, Xiao-Ying^*; Zhang, Jing-Ping^*

来源：Chemistry - A European Journal, 2018, 24(8): 1962-1970.

DOI：10.1002/chem.201705023

• anode materials
• cobalt
• heterogeneous catalysis
• magnetic properties
• metal-organic frameworks
• polymetallic complexes

Polymetallic complexes with interesting multifunctions have attracted extensive investigation. Synthesized through the use of different cobalt salt anions and solvents, five complexes, namely [(Co4Co3III)-Co-II(H2L)(3)Cl-5(MeOH)] (1), [(Co4Co3III)-Co-II(H2L)(3)(CH3COO)(4)(HCOO)H2O](n) (2), [(Co4Co3III)-Co-II(H2L)(3)(HCOO)(4)(NO3)2H(2)O](n) (3), [(Co4Co3III)-Co-II(H2L)(3)(bda)(CH3COO)(4)2H(2)O](n) (4), and [(Co4Co3III)-Co-II(H2L)(3)(ipa)(HCOO)(3)(dmf)H2O](n) (5) (H6L=bis-tris propane; BDA=biphenyl-4,4-dicarboxylic acid; IPA=isophthalic acid; DMF=N,N-dimethylformamide), based on the heptanuclear {(Co4Co3III)-Co-II} cluster with structures from 0D to 3D metal-organic frameworks (MOFs) have been solvothermally synthesized. Compound 1 is the first 0D heptanuclear cluster based on H6L. Compound 2 crystallizes in the chiral space group P2(1)2(1)2(1) and consists of a 1D chiral helical chain. Complex 3 exhibits a 3D network structure. Compound 4 possesses a 1D zigzag-like chain structure. Finally, compound 5 was obtained as a 3D microporous structure. Compounds 1, 3, and 4 display dominant ferrimagnetic interactions whereas compounds 2 and 5 exhibit antiferromagnetic interactions. Moreover, the Co3O4 prepared by calcining compound 2 presents a reversible capacity of 1122.9 mA hg(-1) at 0.2 Ag-1 after 100cycles and an excellent rate capability, which suggests that coordination compounds with a 1D chain structure are outstanding precursors for preparing anode materials for lithium ion batteries.

• 出版日期2018-2-6
• 单位东北师范大学