A Zn(II) Metal-organic Framework Consisting of Hexagonal Cavities Constructed by Benzyl-functionalized 5-Aminoisophthalate

作者：Sun Xiao-Fei; You Jun-Ming; Xu Xia-Hong; Li Xiao-Ju^*

来源：Chinese Journal of Structural Chemistry, 2015, 34(4): 562-568.

• carboxylate ligand
• coordination polymer
• crystal structure
• photoluminescence
• zinc

The hydrothermal reaction of 5-benzylaminoisophthalic acid (H(2)BAIP) and Zn(CH3COO)(2)center dot 2H(2)O in the presence of NaOH gave rise to a three-dimensional (3-D) metal-organic framework containing Zn(II)-carboxylate chains, [Zn(BAIP)](n). Single-crystal X-ray diffraction analysis reveals that the complex crystallizes in trigonal space group R-3 with a = 28.354(2), b = 28.354(2), c = 8.3821(8) angstrom, gamma = 120 degrees, V = 5836.0(10) angstrom(3), Z = 18, M-r = 334.62, D-c = 1.714 g.cm(-3), mu = 1.909 mm(-1), S = 1.162, F(000) = 3060, the final R = 0.0785 and wR = 0.1121 for 2334 observed reflections (I > 2 sigma(I)). Zn(II) is in a distorted tetrahedral geometry, and BAIP serves as a mu(4)-bridge using two mu(2),eta(2)-bridging carboxylate groups. BAIP links Zn(II) ions into a 3-D network containing hexagonal cavities. The coordination-inert benzyl occupies the void space of the large hexagonal cavities. The complex is thermally stable up to 410 degrees C, and exhibits photoluminescent emission at 522 nm on 402 nm excitation.

• 出版日期2015
• 单位福建师范大学