Alviri, Banafsheh Vahdani Pourayoubi, Mehrdad Saneei, Anahid Keikha, Mojtaba Lee, Arie van der Crochet, Aurélien Ajees, A. Abdul Nečas, Marek Fromm, Katharina M. Damodaran, Krishnan Jenny, Titus A. 2018-01-04 The influence of a N heteroatom on the ring conformations of six- and seven- membered aliphatic rings in six new C(O)NHP(O)-based phosphoric triamide structures (analysed by X-ray crystallography) is investigated. Additionally the influence of steric and crystal packing effects is also studied by the analysis of Hirshfeld surfaces. The results are compared to analogous structures with three- to seven- aliphatic membered rings deposited in the Cambridge Structural Database. In the newly determined structures, the six-membered rings only show the near-chair conformation with a maximum deviation of the θ puckering parameter of 4.4° from the ideal chair value of 0°/180°, while the seven-membered rings are found in different conformations such as near-chair, twist chair and twist sofa. application/pdf https://folia.unifr.ch/global/documents/306510 https://folia.unifr.ch/documents/306510/files/jen_pbs.pdf https://folia.unifr.ch/documents/306510/files/jen_pbs_sm.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tet.2017.11.030 info:eu-repo/semantics/openAccess License undefined Tetrahedron. - 2018, vol. 74, no. 1, p. 28–41 Puckering parameter Six-member ring Seven-member ring Phosphoric triamide Hydrogen bond pattern Cambridge Structural Database info:eu-repo/classification/udc/54 Puckering behavior in six new phosphoric triamides containing aliphatic six- and seven-membered ring groups and a database survey of analogous ring-containing structures http://purl.org/coar/resource_type/c_6501