Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province

Guiyang, China

Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province

Guiyang, China
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Guo G.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | Tao Z.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | Xue S.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | Zhu Q.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province
Chinese Journal of Organic Chemistry | Year: 2014

Interaction between cucurbit[n]uril (Q[n], n=6, 7, 8) and fuberidazole (FBZ) in HCl solution at pH 2.5 was investigated by UV-Vis spectroscopy, ITC, 1H NMR spectroscopy. The shift of pKa and bioactivities against Fusarium graminearum about fuberidazole and its host-guest inclusion complexes were discussed. The results showed that the inclusion complexes between cucurbit[n]urils and fuberidazole were formed, and the corresponding pKa of complexes have shifted. In addition, complexation by Q[n] (n=6, 7, 8) has proven to cause solubility enhancement. The activity experimental results showed that complexation of fuberidazole with Q[n] (n=6, 7) recedes activity against Fusarium graminearum while with Q[8] enhances the activity against Fusarium graminearum in vivo. © 2014 Chinese Chemical Society & SIOC, CAS.


Xiao X.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | Liu J.-X.,Anhui University of Technology | Fan Z.-F.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | Chen K.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | And 3 more authors.
Chemical Communications | Year: 2010

The long alkyl chain of N,N′-bis(4-dimethylaminobenzyl)dodecane-1,12- diamine (C12DA) adopts different chiral helical conformations, one left-handed and the other right-handed, when bound within the cavities of two distorted cucurbit[8]uril (Q[8]) units, as unequivocally established by X-ray crystallography. © 2010 The Royal Society of Chemistry.


Xiao X.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | Tao Z.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | Xue S.-F.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | Zhang Y.-Q.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | And 3 more authors.
CrystEngComm | Year: 2011

Three novel coordination polymers {[K(H2O)](NO 3⊂C30H28N20O20) [K(η2-NO3)]}Cl(H3O)2 2+·7H2O (1), {[Rb3(μ2- H2O)(μ3-H2O)(H2O) 5SO4]+(H2O⊂C30H 29N20O20)}Cl(H3O) +·2H2O (2), [Cs2(H2O⊂ C30H26N20O20)]SO4 2-(H3O)44+ (3), were obtained by reactions of the corresponding alkali metal salts with an organic macrocyclic ligand perhydroxycucurbit[5]uril, (HO)10Q[5], and their structures were determined by single-crystal X-ray diffraction studies. The results revealed that, in complexes 1 and 3, the (HO)10Q[5] ligands are interlinked into two-dimensional networks through coordination of their carbonyl groups and hydroxy groups to the alkali metal ions (K+ and Cs +) in between, while in complex 2, the carbonyl groups and hydroxy groups of the (HO)10Q[5] ligands are coordinated by the Rb + ions to form an acclivitous 'ladder' structure. Furthermore, solid-state packing of the complexes 1 and 3 shows the formation of open channels occupied by counterions and non-coordinating water molecules. The thermogravimetric analysis (TGA) of complex 1 was characterized. © 2011 The Royal Society of Chemistry.


Xiao X.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | Lin R.-L.,Anhui University of Technology | Zheng L.-M.,Henan University of Technology | Sun W.-Q.,Anhui University of Technology | And 4 more authors.
RSC Advances | Year: 2014

Two inclusion complexes formed on self-assembly of the Q[8] host with dihexyl-4,4′-bipyridinium (HV2+) dibromide and 1,3-bis(4-butylpiperazin-1-yl)-propane (C3PA2+) dibromide guests have been characterized by X-ray crystallography, which clearly shows how the hosts and the guests interlock with each other using supramolecular interactions, eventually generating novel polypseudorotaxanes. This journal is © the Partner Organisations 2014.


Cong H.,Guizhou University | Cong H.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | Li C.-R.,Guizhou University | Xue S.-F.,Guizhou University | And 4 more authors.
Supramolecular Chemistry | Year: 2012

Interaction between tetramethylcucurbit[6]uril (TMeQ[6], host) and the hydrochloride salt of α-furaldehyde-isonicotinyl-hydrazone hydrochloride (FIHH +, guest) was investigated using X-ray crystallography and spectroscopic methods. X-ray crystallography showed that the π-π stacking effect and hydrogen bonding resulted in the formation of a dumbbell-shaped supramolecule which contained two FIHH +@TMeQ[6] host-guest inclusion complexes. The host-guest interaction provided identifiable changes in the vibrational frequencies in the IR spectra. 1H NMR spectral analysis established a similar interaction model and revealed that TMeQ[6] preferred to include the furan moiety over the pyridine moiety of the FIHH + guest molecule. Absorption spectrophotometric analysis suggested that the host and guest interact in a ratio of 1:1 with a stability constant K s=(3. 52±0.74)×10 6lmol -1.pH titration confirmed that the host-guest interaction led to a clear change in the protonation constant of the title guest. Quantum chemical calculations were used to determine the possible mechanism of formation of the dumbbell-shaped complex. © 2012 Copyright Crown Copyright 2012. Reproduced with the permission of the Commonwealth Scientific and Industrial Research Organisation. © 2012 Taylor & Francis.


Liang L.-L.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | Zhao Y.,Anhui University of Technology | Zhang Y.-Q.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | Tao Z.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | And 3 more authors.
CrystEngComm | Year: 2013

A series of complexes based on the macrocyclic ligand cucurbit[7]uril (Q[7]) with formulas {La2(H2O)12Q[7]} ·2(ZnCl4)·2Cl·31H2O (1), {Ln 2(H2O)12Q[7]}·2(ZnCl4) ·2Cl·xH2O [isomorphous with Ln = Ce (2), Pr (3) and Nd (4), x = 25 (2), 29 (3) and 25 (4)], and {Ln2(H2O) 10Q[7]}·2(ZnCl4)·2Cl·xH2O [isomorphous with Ln = Sm (5), Gd (6), Tb (7), Er (8), Tm (9), Yb (10) and Lu (11), x = 24 (5), 27 (6), 27 (7), 33 (8), 27 (9), 18 (10) and 29 (11)], have been synthesized by the self-assembly of Q[7] with the corresponding lanthanide species in the presence of ZnCl2. The single-crystal X-ray diffraction analyses reveal that the eleven complexes are separated into three types of coordination nanotubes given different coordination environments of the lanthanide(iii) ions. The eleven complexes display interesting structural progressions, which are mainly ascribed to the effect of lanthanide contraction. Their thermal and IR properties were also examined. © 2013 The Royal Society of Chemistry.


Liu J.-X.,Anhui University of Technology | Hu Y.-F.,Anhui University of Technology | Lin R.-L.,Anhui University of Technology | Sun W.-Q.,Anhui University of Technology | And 4 more authors.
CrystEngComm | Year: 2012

Eight coordination complexes, {LnCl 2(H 2O) 3Q*[5]}·NO 3·18.5H 2O [isomorphous for Ln = La (1), Ce (2) and Pr (3)], {LnCl 2(H 2O) 2Q*[5]}·NO 3·14H 2O [isomorphous for Ln = Nd (4) and Sm (5)], {Dy(H 2O) 2[Cl ⊂ Q*[5]]Dy(H 2O) 6} ·5Cl·20H 2O (6), {LnCl(H 2O)[Cl ⊂ Q*[5]]Ln(H 2O) 6}·4Cl·13H 2O [isomorphous for Ln = Ho (7) and Er (8)], were obtained by reactions of the corresponding lanthanide species with the macrocyclic ligand pentacyclohexanocucurbit[5]uril (Q*[5]) in aqueous solution, and their structures were determined by single-crystal X-ray diffraction. Crystal structure analysis reveals that, in complexes 1-5, each Q*[5] coordinates to one lanthanide(iii) ion to form an opened molecular capsule structure, and then adjacent molecular capsules bridge each other to form a 1-D coordination polymer structure, while in complexes 6-8, each Q*[5] coordinates to two lanthanide(iii) ions to form a 0-D half-opened molecular capsule structure. These complexes show that their structural variations are ascribed to the effect of lanthanide contraction. This journal is © The Royal Society of Chemistry 2012.


Cong H.,Guizhou University | Cong H.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | Li C.-R.,Guizhou University | Xue S.-F.,Guizhou University | And 4 more authors.
Organic and Biomolecular Chemistry | Year: 2011

A chemical investigation reveals that the resistance to acylation of an anti-tuberculosis drug, isoniazid is a consequent result of the inclusion or exclusion of cucurbit[n]urils (n = 6 or 7). The 1H NMR spectra analysis shows that the different interaction models of the isoniazid with the two cucurbiturils are dependent on the cavity size of the hosts. Quantum chemistry calculations with density functional theory method indicate that the interaction of the isoniazid with both cucurbiturils is through thermodynamic stabilization in both the gas phase and aqueous solution through hydrogen bonding on the portal carbonyls of the cucurbiturils. Electronic absorption titration spectra suggest the hosts and guest interact in a ratio of 1:1 with moderate binding constants. Acylation kinetics of isoniazid with various acylating agents in the presence of the cucurbiturils revealed that resistance is only dependent on the host-isoniazid ratio, and independent on the size of the cucurbiturils and the species of acylating agents. © 2011 The Royal Society of Chemistry.


Han B.-X.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | Wang C.-Z.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | Chen K.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | Xiao X.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | And 4 more authors.
CrystEngComm | Year: 2014

The coordination and supramolecular assemblies of potassium/lanthanide cations to perhydroxycucurbit[5]uril in the presence of [PMo12O 40]3- anions show significant differences, which could be used for the isolation of light lanthanides from their heavier counterparts. This journal is © The Royal Society of Chemistry.


Cheng X.-J.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | Ji N.-N.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | Zhao Y.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | Liang L.-L.,Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province | And 5 more authors.
CrystEngComm | Year: 2014

The coordination and supramolecular assemblies of Q[8] with lanthanides in the presence of [CdCl4]2- anions show significant differences, which could be used for the isolation of light lanthanides from their heavier counterparts. This journal is © The Royal Society of Chemistry.

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