Reprint of “Structural diversity of cobalt(II) coordination compounds involving bent imidazole ligand: A route from 0D dimer to 3D coordination polymer”

摘要: Abstract Mixed ligand approach could be successfully applied to design porous three-dimensional coordination polymers, involving 1,3-bis(imidazol-1-yl)benzene (1,3-bib) as ligand. Five novel Co(II) compounds with different dimensionality have been synthesized. Utilizing only 1,3-bib in the solvothermal reaction salts, molecular dimer Co2(bib)2Cl4 or 1D polymer Co2(1,3-bib)2(NO3)2 Copolymerization technique using additional linear dicarboxylates 1,4-benzenedicarboxylate (1,4-bdc) 2,6-naphthalenedicarboxylate (2,6-ndc) facilitates formation of 2D layered polymers Co(1,3-bib)(1,4-bdc) and Co(1,3-bib)(2,6-ndc). 4,4′-biphenyldicarboxylate (4,4′-bpdc) a co-linker, 3D metal–organic framework Co3(1,3-bib)(4,4′-bpdc)3 (DUT-58, DUT – Dresden University Technology), possessing two interpenetrated uninodal 8-connected frameworks, has obtained. DUT-58 exhibits specific surface area 1208 m2/g adsorbs 27 mg/g hydrogen (maximum excess value at 30 bar 77 K), 0.18 g/g n-butane (at 293 K) 72 mg/g methane 60 bar 298 K).