TY - JOUR
T1 - Entangled metal-organic frameworks of m-phenylenediacrylate modulated by bis(pyridyl) ligands
AU - Sun, Qian
AU - Wang, Yan Qin
AU - Cheng, Ai Ling
AU - Wang, Kun
AU - Gao, En Qing
PY - 2012/5/2
Y1 - 2012/5/2
N2 - Solvothermal reactions of m-phenylenediacrylic acid (H 2mpda) and zinc(II) salts in the presence of different bis(pyridyl) ancillary ligands afforded a series of supramolecular interpenetrated coordination architectures with formula [Zn(mpda)(bpee)] n (1), [Zn(mpda)(bpea)] n (2), and [Zn(mpda)(bpp)] n•2.5H 2O (3) (bpee = 1,2-bis(4-pyridyl)ethylene, bpea = 1,2-bis(4-pyridyl)ethane, bpp = 1,3-bis(4-pyridyl)propane). X-ray analyses revealed that all of the compounds feature tetrahedral-based coordination geometry around Zn(II), two-dimensional (2D) 4 4 coordination networks with different linkers, and parallel 2D→2D interpenetration, which is stabilized by interlayer hydrogen-bonding interactions. The arc-shaped mpda ligand collaborates with quasi-linear bpee or bpea to generate 2D achiral networks with chair-shape windows in 1 and 2, but with two different arc-shaped ligands (mpda and bpp); the single network in 3 is homochiral and has boat-shaped windows. The different shapes of the networks result in different interpenetration modes. Both networks of 1 and 2 exhibit 3-fold parallel interpenetration and give trilayers. Differently, two layers of the same handedness in 3 interpenetrate to give a homochiral bilayer featuring double helical motifs, and the alternating stacking of oppositely handed bilayers renders the compound racemic. The interpenetration mode and the formation of the double helices in 3 benefit not only from the arc shape of the two bridging ligands but also from the match of the two ligands in length.
AB - Solvothermal reactions of m-phenylenediacrylic acid (H 2mpda) and zinc(II) salts in the presence of different bis(pyridyl) ancillary ligands afforded a series of supramolecular interpenetrated coordination architectures with formula [Zn(mpda)(bpee)] n (1), [Zn(mpda)(bpea)] n (2), and [Zn(mpda)(bpp)] n•2.5H 2O (3) (bpee = 1,2-bis(4-pyridyl)ethylene, bpea = 1,2-bis(4-pyridyl)ethane, bpp = 1,3-bis(4-pyridyl)propane). X-ray analyses revealed that all of the compounds feature tetrahedral-based coordination geometry around Zn(II), two-dimensional (2D) 4 4 coordination networks with different linkers, and parallel 2D→2D interpenetration, which is stabilized by interlayer hydrogen-bonding interactions. The arc-shaped mpda ligand collaborates with quasi-linear bpee or bpea to generate 2D achiral networks with chair-shape windows in 1 and 2, but with two different arc-shaped ligands (mpda and bpp); the single network in 3 is homochiral and has boat-shaped windows. The different shapes of the networks result in different interpenetration modes. Both networks of 1 and 2 exhibit 3-fold parallel interpenetration and give trilayers. Differently, two layers of the same handedness in 3 interpenetrate to give a homochiral bilayer featuring double helical motifs, and the alternating stacking of oppositely handed bilayers renders the compound racemic. The interpenetration mode and the formation of the double helices in 3 benefit not only from the arc shape of the two bridging ligands but also from the match of the two ligands in length.
UR - https://www.scopus.com/pages/publications/84860473210
U2 - 10.1021/cg201432w
DO - 10.1021/cg201432w
M3 - 文章
AN - SCOPUS:84860473210
SN - 1528-7483
VL - 12
SP - 2234
EP - 2241
JO - Crystal Growth and Design
JF - Crystal Growth and Design
IS - 5
ER -