| dc.contributor.author |
Triantafyllopoulou, Vasso |
en |
| dc.contributor.author |
Tsorteki, Frantzeska |
en |
| dc.contributor.author |
Mentzafos, Dimitris |
en |
| dc.contributor.author |
Bethanis, Kostas |
en |
| dc.contributor.other |
Τριανταφυλλοπούλου, Βάσω |
el |
| dc.contributor.other |
Τσορτέκη, Φραντζέσκα |
el |
| dc.contributor.other |
Μεντζαφός, Δημήτρης |
el |
| dc.contributor.other |
Μπεθάνης, Κώστας |
el |
| dc.date.accessioned |
2014-06-06T06:52:38Z |
|
| dc.date.available |
2014-06-06T06:52:38Z |
|
| dc.date.issued |
2013 |
en |
| dc.identifier.issn |
09230750 |
en |
| dc.identifier.uri |
http://dx.doi.org/10.1007/s10847-012-0164-2 |
en |
| dc.identifier.uri |
http://62.217.125.90/xmlui/handle/123456789/6094 |
|
| dc.subject |
β-Cyclodextrin |
en |
| dc.subject |
2-Naphthylacetic acid |
en |
| dc.subject |
Heptakis |
en |
| dc.subject |
X-ray crystallography |
en |
| dc.title |
Inclusion compounds of plant growth regulators in cyclodextrins, part VII: Study of the crystal structures of 2-naphthylacetic acid encapsulated in β-cyclodextrin and heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin complexes by X-ray crystallography |
en |
| heal.type |
conferenceItem |
en |
| heal.identifier.primary |
10.1007/s10847-012-0164-2 |
en |
| heal.publicationDate |
2013 |
en |
| heal.abstract |
The crystal structures of the β-naphthylacetic acid (2NAA)/β-cyclodextrin (β-CD) and the 2NAA/heptakis(2,3,6-tri-O-methyl) -β-CD (TMβCD) complexes are reported. The 2NAA/β-CD complex crystallizes in the triclinic system forming a dimer inside the cavity of which two 2NAA molecules disordered over two sites are located. The dimers are stacked along the c axis according to the channel packing mode forming a nanotube which resembles a wireway as it contains guest molecules linked by π-π interactions inside each dimeric cavity and by H-bonds between the adjacent dimers. The 2NAA/TMβCD complex crystallizes in the orthorhombic space group P212121. Its asymmetric unit contains one host, one guest distributed over two sites and one water molecule having a low occupancy factor. The complexes are packed in a head-to-tail mode forming a screw channel along the b axis. The carboxyl group of the guest protrudes towards the ""free"" space between the complexes and is H-bonded to the water molecule which in turn is H-bonded to the O5n atom of the host of the subsequent complex. The orientation of the guest molecule in the 2NAA/β-CD complex has been found opposite to that of the guest in the 2NAA/TMβCD complex probably due to the formation of dimers and the π-π interactions between the naphthalene moieties of the encapsulated molecules inside the dimeric cavity. |
en |
| heal.journalName |
Journal of Inclusion Phenomena and Macrocyclic Chemistry |
en |
| dc.identifier.issue |
3-4 |
en |
| dc.identifier.volume |
75 |
en |
| dc.identifier.doi |
10.1007/s10847-012-0164-2 |
en |
| dc.identifier.spage |
303 |
en |
| dc.identifier.epage |
310 |
en |