Release of the Prays oleae pheromone as a consequence of supramolecular structure: study of the β-cyclodextrin-(Z)-tetradec-7-en-1-al complex by X-ray crystallography and NMR spectroscopy in the solid state and in solution

Author(s):  
Konstantina Yannakopoulou ◽  
John A. Ripmeester ◽  
Irene M. Mavridis
2013 ◽  
Vol 2013 ◽  
pp. 1-5
Author(s):  
Saeideh Hosseini ◽  
Farzin Marandi ◽  
Ertan Şahin ◽  
Seyid Javad Musevi

A new Pb(II) complex,[Pb(bp)2(btfa)2]  1, has been synthesized with bathophenanthroline (bp) and benzoyltrifluoroacetone (Hbtfa) and characterized by elemental analysis IR andH1NMR spectroscopy as well as by thermal properties and X-ray crystallography. The coordination number of the Pb(II) ions in 1 is eight, with thePbN4O4coordination polyhedron containing a stereochemically “inactive” electron lone pair with holodirected coordination spheres. In solid state, there are π⋯π, C–H⋯F, C–H⋯O, and F⋯F interactions between adjacent units to generate 3D supramolecular structure.


2019 ◽  
Vol 21 (36) ◽  
pp. 19879-19889
Author(s):  
María Mar Quesada-Moreno ◽  
Juan Ramón Avilés-Moreno ◽  
Juan Jesús López-González ◽  
Fco. Javier Zúñiga ◽  
Dolores Santa María ◽  
...  

4aα (chiral) and 4aβ (achiral) polymorphs of 1H-benzotriazole are studied by X-ray crystallography, SSNMR, IR, Raman, VCD, and quantum chemical calculations. The absolute configuration of the supramolecular structure of 4aα polymorph is determined.


Author(s):  
Rosa María Claramunt ◽  
María Dolores Santa María ◽  
Isabelle Forfar ◽  
Francisco Aguilar-Parrilla ◽  
María Minguet-Bonvehí ◽  
...  

CrystEngComm ◽  
2022 ◽  
Author(s):  
Zenghui Zhang ◽  
Rui-Lian Lin ◽  
Xiangyun Yu ◽  
Li-Xia Chen ◽  
Zhu Tao ◽  
...  

The binding interactions of cucurbit[8]uril (Q[8]) with L-Valine, D-Leucine, and D-Methionine, both in aqueous solution and solid state, have been studied by 1H NMR spectroscopy and X-ray crystallography. 1H NMR...


2018 ◽  
Vol 73 (10) ◽  
pp. 733-738 ◽  
Author(s):  
Xintong Han ◽  
Shanshan Mao ◽  
Chuang Li ◽  
Kesheng Shen ◽  
Xinkui Shi ◽  
...  

AbstractA new modification of the homometallic silver(I) cluster [Ag4Br4(PPh3)4] has been prepared and characterized by elemental analysis, UV/Vis and IR spectroscopy, and X-ray crystallography. The tetramer shows a polycyclic structure with a chair conformation. The bromine atoms adopt μ2- and μ3-bridging modes. The shortest Ag–Ag distance in the cluster is 3.159(2) Å, which indicates significant Ag–Ag interactions. A supramolecular structure is arranged by hydrogen bonds (C–H···Br). Cyclic voltammograms of the cluster indicate a quasi-reversible Ag+/Ag couple. The fluorescence properties of the ligand and the Ag(I) cluster were studied in the solid state. The emission peaks of the Ag(I) cluster are attributed to ligand-centered luminescence.


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