TY - JOUR
T1 - Anionic host layers constructed with guanidinium-hydrogen carbonate dimer 2:1 rosette-ribbons and bridging carboxylate connectors
AU - Han, Jie
AU - Yau, Chung Wah
AU - Chan, Chin Wing
AU - Mak, Thomas C.W.
PY - 2012/9/5
Y1 - 2012/9/5
N2 - Four new inclusion compounds featuring an anionic layer-type host lattice constructed with guanidinium-bis(hydrogen carbonate) 2:1 rosette-ribbons that accommodate the same tetra-n-butylammonium guest species have been obtained and characterized by single-crystal X-ray analysis. In these crystal structures, an array of rosette-ribbons in parallel or nearly parallel alignment are cross-linked by selected carboxylate molecular connectors with effective bridging distances in the range 10.1-19.8 Å: 4,4′- biphenyldicarboxylate, with the longest separation between its colinear hydrogen-bonding acceptor sites in [(n-Bu) 4N +] 6[C(NH 2) 3 +] 6(HCO 3 -) 6[4,4′-C 12H 8(COO -) 2] 3•6H 2O (1); cyclohexane-1,4-dicarboxylate, with a nonplanar molecular skeleton in [(n-Bu) 4N +] 4[C(NH 2) 3 +] 8(HCO 3 -) 6[1,4′- C 6H 10(COO -) 2] 3• 8H 2O (2); 4-cyanobenzoate, with a strong "Y type" hydrogen-bonding acceptor site at one end and a weak one at the other in [(n-Bu) 4N +] 2[C(NH 2) 3 +] 2(HCO 3 -) 2[NCC 6H 4(COO -)] 2•2H 2O (3); and 1H-imidazole-4,5-dicarboxylate, functioning as a multiple hydrogen-bond acceptor in [(n-Bu) 4N +] 3[C(NH 2) 3 +] 4(HCO 3 -) 4[H +{C 3N 2H -(COO -)(COOH)} 2] (4). The resulting planar anionic layer in 1 becomes an undulatory one in 3 and 4. In 2, adjacent wavy layers are supported by centrosymmetric cyclic (GM +) 2(H 2O) 4 "double molecular pillars" to yield a three-dimensional anionic host network.
AB - Four new inclusion compounds featuring an anionic layer-type host lattice constructed with guanidinium-bis(hydrogen carbonate) 2:1 rosette-ribbons that accommodate the same tetra-n-butylammonium guest species have been obtained and characterized by single-crystal X-ray analysis. In these crystal structures, an array of rosette-ribbons in parallel or nearly parallel alignment are cross-linked by selected carboxylate molecular connectors with effective bridging distances in the range 10.1-19.8 Å: 4,4′- biphenyldicarboxylate, with the longest separation between its colinear hydrogen-bonding acceptor sites in [(n-Bu) 4N +] 6[C(NH 2) 3 +] 6(HCO 3 -) 6[4,4′-C 12H 8(COO -) 2] 3•6H 2O (1); cyclohexane-1,4-dicarboxylate, with a nonplanar molecular skeleton in [(n-Bu) 4N +] 4[C(NH 2) 3 +] 8(HCO 3 -) 6[1,4′- C 6H 10(COO -) 2] 3• 8H 2O (2); 4-cyanobenzoate, with a strong "Y type" hydrogen-bonding acceptor site at one end and a weak one at the other in [(n-Bu) 4N +] 2[C(NH 2) 3 +] 2(HCO 3 -) 2[NCC 6H 4(COO -)] 2•2H 2O (3); and 1H-imidazole-4,5-dicarboxylate, functioning as a multiple hydrogen-bond acceptor in [(n-Bu) 4N +] 3[C(NH 2) 3 +] 4(HCO 3 -) 4[H +{C 3N 2H -(COO -)(COOH)} 2] (4). The resulting planar anionic layer in 1 becomes an undulatory one in 3 and 4. In 2, adjacent wavy layers are supported by centrosymmetric cyclic (GM +) 2(H 2O) 4 "double molecular pillars" to yield a three-dimensional anionic host network.
UR - https://www.scopus.com/pages/publications/84865855760
U2 - 10.1021/cg3006184
DO - 10.1021/cg3006184
M3 - Article
AN - SCOPUS:84865855760
SN - 1528-7483
VL - 12
SP - 4457
EP - 4465
JO - Crystal Growth and Design
JF - Crystal Growth and Design
IS - 9
ER -