eprintid: 18066 rev_number: 24 userid: 1419 dir: disk0/00/01/80/66 datestamp: 2013-04-08 17:23:25 lastmod: 2021-06-12 22:55:15 status_changed: 2013-04-08 17:23:25 type: article metadata_visibility: show item_issues_count: 0 eprint_status: archive creators_name: Alfonso, DR creators_name: Karapetian, K creators_name: Sorescu, DC creators_name: Jordan, KD creators_email: creators_email: creators_email: creators_email: jordan@pitt.edu creators_id: creators_id: creators_id: creators_id: JORDAN title: Characterization of water clusters in organic molecular hosts from density functional theory calculations ispublished: pub divisions: sch_as_chemistry full_text_status: public abstract: A density functional study of (H2O)6 and (H2O)8 clusters enclosed in organic hosts is undertaken. The calculations use supercells that contain up to 326 atoms. The crystal structures calculated for the (H2O)6/host and the (H2O)8/host systems are in qualitative agreement with those obtained from X-ray diffraction studies. The calculations confirm the presence of (H2O)8 clusters with Ci symmetry in the (H2O)8/host crystal and verify the existence of one-dimensional chains of fused water hexamers within channels of the (H2O)6/host crystal. The major differences observed between the calculated and experimental structures are attributed to the limitations of the Perdew-Wang functional for describing long-range dispersion interactions. date: 2004-03-18 date_type: published publication: Journal of Physical Chemistry B volume: 108 number: 11 pagerange: 3431 - 3436 refereed: TRUE issn: 1520-6106 id_number: 10.1021/jp0309320 citation: Alfonso, DR and Karapetian, K and Sorescu, DC and Jordan, KD (2004) Characterization of water clusters in organic molecular hosts from density functional theory calculations. Journal of Physical Chemistry B, 108 (11). 3431 - 3436. ISSN 1520-6106 document_url: http://d-scholarship-dev.library.pitt.edu/18066/1/licence.txt