title: Crystal structure of methyl 4-(4-hy-droxy-phen-yl)-6-methyl-2-oxo-1,2,3,4-tetra-hydro-pyrimidine-5-carboxyl-ate monohydrate.
abstract: The title hydrate, C13H14N2O4·H2O, crystallizes with two formula units in the asymmetric unit (Z' = 2). The dihedral angles between the planes of the tetra-hydro-pyrimidine ring and the 4-hy-droxy-phenyl ring and ester group are 86.78 (4) and 6.81 (6)°, respectively, for one mol-ecule and 89.35 (4) and 3.02 (4)° for the other. In the crystal, the organic mol-ecules form a dimer, linked by a pair of N-H⋯O hydrogen bonds. The hydroxy groups of the organic mol-ecules donate O-H⋯O hydrogen bonds to water mol-ecules. Further, the hy-droxy group accepts N-H⋯O hydrogen bonds from amides whereas the water mol-ecules donate O-H⋯O hydrogen bonds to the both the amide and ester carbonyl groups. Other weak inter-actions, including C-H⋯O, C-H⋯π and π-π, further consolidate the packing, generating a three-dimensional network.
authors.affiliation: Department of Chemistry, Visvesvaraya National Institute of Technology, Nagpur, 440010, Maharashtra, India.
authors.forename: Keshab M
authors.initials: KM
authors.lastname: Bairagi
authors.affiliation: Department of Biotechnology and Food Technology, Durban University of Technology, Durban 4001, South Africa.
authors.forename: Katharigatta N
authors.initials: KN
authors.lastname: Venugopala
authors.affiliation: Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462023, India.
authors.forename: Pradip Kumar
authors.initials: PK
authors.lastname: Mondal
authors.affiliation: Department of Biotechnology and Food Technology, Durban University of Technology, Durban 4001, South Africa.
authors.forename: Bharti
authors.initials: B
authors.lastname: Odhav
authors.affiliation: Department of Chemistry, Visvesvaraya National Institute of Technology, Nagpur, 440010, Maharashtra, India.
authors.forename: Susanta K
authors.initials: SK
authors.lastname: Nayak
keywords: DHPM derivative; Z′ = 2; crystal structure; hydrogen bonding; monohydrate