WebApr 21, 2011 · Several dynamic hexaimine cryptophanes, that are built up from two triformylcyclotribenzylene cavitands and three diamino linkers and spontaneously assemble in water in the presence of a suitable templating guest, are reported. X-ray structure, kinetics and thermodynamics of assembly and molecular recognition properties are discussed. Websyn-Cryptophanes: macrocyclic compounds with optimized characteristics for the design of 129Xe NMR-based biosensors† Estelle Le´once,a Thierry Brotinb and Patrick Berthault *a A new water-soluble xenon host system with great promise for the 129Xe NMR-based biosensing approach is presented: the syn-cryptophane-222-hexacarboxylate.
Versatile syntheses of hemi-cryptophanes and a metallo
WebCryptophanes are a class of organic supramolecular compounds studied and synthesized primarily for molecular encapsulation and recognition. One possible noteworthy … WebFeb 18, 2024 · A dumbbell-shaped TBTQ-based metallo-cryptophane was also synthesized in 34 % yield by a solvothermal reaction between cadmium nitrate and two equivalents of … can i use vegetable oil in my paper shredder
M3L2 metallo-cryptophanes: [2]catenane and simple cages
Cryptophanes are a class of organic supramolecular compounds studied and synthesized primarily for molecular encapsulation and recognition. One possible noteworthy application of cryptophanes is encapsulation and storage of hydrogen gas for potential use in fuel cell automobiles. Cryptophanes can … See more Cryptophanes were discovered by André Collet and Jacqueline Gabard in 1981 when these researchers created, using template-directed synthesis, the first cryptophane, now known as cryptophane-A. See more The anti cryptophane isomer belongs to the D3 point group and the syn cryptophane isomer belongs to the C3h point group. Both molecules therefore do not exhibit a dipole … See more Cryptophane cages are formed by two cup-shaped [1.1.1]–orthocyclophane units (see cyclotriveratrylene), connected by three bridges (denoted Y). There are also choices of the peripheral substitutes R1 and R2 attached to the aromatic rings of the units. Most … See more WebNew enantiopure cryptophanes 3 − 7 having C1 -symmetry have been synthesized. Electronic circular dichroism (ECD) and vibrational circular dichroism (VCD) have been used to investigate their chiroptical properties, and the results are compared to those obtained for cryptophane-A ( 1) having D3 -symmetry. WebCryptophanes-C(222-6)and-D(syn-222-7)aremodificationsofcryptophanes-Aand-B,respectively,thatlackmethoxygroupson one of the CTB units (R1–3¼OCH 3,R 4–6¼H) and thereby exhibit larger portals.13,19 It was originally thought that larger portals may be necessary to allow accessof guests to the central cavity. Thoughthis hypothesis was ... can i use vellum on an ipad