title: Crystal structures of two C,N-disubstituted acetamides: 2-(4-chloro-phen-yl)-N-(2-iodo-phen-yl)acetamide and 2-(4-chloro-phen-yl)-N-(pyrazin-2-yl)acetamide.
abstract: In the crystal of 2-(4-chloro-phen-yl)-N-(2-iodo-phen-yl)acetamide, C14H11ClINO, mol-ecules are linked by a combination of N-H⋯O and C-H⋯O hydrogen bonds to form aC(4)C(4)[R21(7)] chain of rings and chains of this type are linked by a combination of C-Cl⋯π(arene) and C-I⋯π(arene) inter-actions to form deeply puckered twofold inter-woven sheets. In the crystal of 2-(4-chloro-phen-yl)-N-(pyrazin-2-yl)acetamide, C12H10ClN3O, mol-ecules are linked into complex sheets by N-H⋯N, C-H⋯N and C-H⋯O hydrogen bonds, and by C-H⋯π(arene) inter-actions.
authors.affiliation: Department of Chemistry, Mangalore University, Mangalagangothri 574 199, India.
authors.forename: Badiadka
authors.initials: B
authors.lastname: Narayana
authors.affiliation: Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysuru 570 006, India.
authors.forename: Hemmige S
authors.initials: HS
authors.lastname: Yathirajan
authors.affiliation: Centre for Biological Sciences (Bioinformatics), Central University of South Bihar, BIT Campus, PO, B.V. College, Patna 800 014, Bihar State, India.
authors.forename: Ravindranath
authors.initials: R
authors.lastname: Rathore
authors.affiliation: School of Chemistry, University of St Andrews, Fife KY16 9ST, Scotland.
authors.forename: Christopher
authors.initials: C
authors.lastname: Glidewell
keywords: C,N-disubstituted acetamides; C—halogen⋯π bonding; crystal structure; hydrogen bonding; mol­ecular conformation; mol­ecular structure