Premium
Synthesis, Structure, and Magnetic Properties of a Copper(II) Metal‐Organic Framework with Biphenyl‐2,2′,4,4′‐tetracarboxylic Acid
Author(s) -
Tian Hua,
Jia QinXiang,
Li Peng,
Yang QingFeng,
Gao EnQing
Publication year - 2018
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201700362
Subject(s) - carboxylate , antiferromagnetism , crystallography , dimer , metal organic framework , copper , crystal structure , biphenyl , monomer , chemistry , molecule , metal , materials science , stereochemistry , polymer , condensed matter physics , organic chemistry , physics , adsorption
The 2D Cu II metal‐organic framework [Cu 2 (bptc)(H 2 O) 4 ] n · 4 n H 2 O ( 1 ) (H 4 bptc = biphenyl‐2,2′,4,4′‐tetracarboxylic acid) was hydrothermally synthesized and characterized by single‐crystal X‐ray diffraction and magnetic measurements. In the structure, bptc 4– serves as a twisted Π‐shaped organic building block to connect paddlewheel [Cu 2 (COO) 4 ] dinuclear units and mononuclear units through 2‐/2′‐carboxylate and 4‐/4′‐carboxylate, respectively. According to the magnetic analysis using a dimer‐plus‐monomer model, strong antiferromagnetic coupling is operative within the dinuclear unit ( J = –311 cm –1 based on H = – J S 1 S 2 ), and the compound behaves like a mononuclear molecule at low temperature.