Self inclusion in a calix[5]arene structure; structure of the cone conformer of a pentahydroxy-p-tert-butylcalix[5]arene

The Dimeric “Hand‐Shake” Motif in Complexes and Metallo–Supramolecular Assemblies of Cyclotriveratrylene‐Based Ligands

“…A similar homomeric inclusion motif which extends to a 1D chain has also been reported for CTV analogues [9,18] and p-tertbutyl-calix [5]arene. [19] Other homomeric inclusion motifs involving molecular hosts include self-inclusion, in which the guest fragment is covalently attached to the host fragAbstract: A series of clathrate and metal complexes with cyclotriveratrylene-like molecular host ligands show a similar dimeric homomeric inclusion motif in which a ligand arm of one host is the intra-cavity guest of another and vice versa. This "hand-shake" motif is found in the trinuclear transition metal complex [Cu 3 Clathrates of ligands 2 and 5 do not show the same dimeric motif, although 2 has an extended homomeric inclusion motif that gives a hexagonal network.…”

Encapsulation of Drug Molecules into Calix[n]arene Nanobaskets. Role of Aminocalix[n]arenes in Biopharmaceutical Field

“…In contrast, CAs with odd number of phenol moieties are more difficult to prepare and have attracted less attention. Thus, only relatively few studies can be found on calix[5]arenes, calix[7]arenes, and calix[9]arenes …”

Self-inclusion structure of 5,11,17,23-tetrakis(azidomethyl)-25,26,27,28-tetrahydroxycalix[4]arene, and 5,11,17,23-tetra-tert-butyl-25,27-bis(chloroacetoxy)-26,28-bis(2-pyridylmethoxy)calix[4]arene

“…On the other hand, these molecules are useful building blocks for the construction of larger supramolecular assemblies. The crystal structures of self-inclusion aggregations based on some calix[4]arene derivatives have been described (Gallagher et al, 1994;Bö hmer et al, 1996;Brouwer et al, 2001;Ben Othman et al, 2004). Recently, azide groups have been introduced successfully into the calix[4]arene platform in order to construct more sophisticated receptors via click chemistry (Rostovtsev et al, 2002;Bew et al, 2007;Colasson et al, 2007;Vecchi et al, 2008;Morales-Sanfrutos et al, 2008); however, to the best of our knowledge, no examples of self-inclusion structures of such derivatives in the solid state have been described.…”

“…atoms C2, C3 and C7. There have been several previous reports on the self-inclusion of calixarenes in the solid state (Gallagher et al, 1994;Bö hmer et al, 1996;Brouwer et al, 2001;Ben Othman et al, 2004); however, this self-inclusion usually involves weak intermolecular C-HÁ Á Á contacts. The structure of (I) is the first example of calixarene self-inclusion stabilized by weak intermolecular C-HÁ Á ÁN hydrogen bonds and (N 3 )-(aromatic) interactions.…”