The asymmetric unit of the title compound, C16H13N3O3·0.5C2H6OS, is composed of two independent pyrazolidine-3,5-dione mol-ecules and one dimethyl sulfoxide solvent mol-ecule. In each pyrazolidine-3,5-dione mol-ecule, an intra-molecular N-H⋯O hydrogen bond forms an S(5)S(6) motif. In the crystal, pairs of each independent pyrazolidine-3,5-dione mol-ecule are linked by N-H⋯O hydrogen bonds, form...

The title compound, C(6)H(8)N(2)O(2), was prepared from 2,5-dimethyl-pyrazine, acetic acid, and hydrogen peroxide. The 2,5-dimethyl-pyrazine 1,4-dioxide mol-ecule is located on an inversion center. π-π inter-actions between neighboring 2,5-dimethyl-pyrazine 1,4-dioxide mol-ecules are observed with an inter-planar distance of 3.191 Å. Each 2,5-dimethyl-pyrazine 1,4-dioxide mol-ecule is linked to...

Two chiral derivatives of 1,2-benzenedisulfonimide, namely 4-methyl-3,6-bis(o-tolyl)-1,2-benzenedisulfonimide and 4,5-dimethyl-3,6-bis(o-tolyl)-1,2-benzenedisulfonimide, have been easily synthesized in good overall yields (respectively 34% and 41%) by means of an eleven-step synthetic protocol from commercially available 2-methyl-6-nitroaniline or 2,3-dimethyl-6-nitroaniline. 4,5-Dimethyl-3,6-b...

The title organic-inorganic salt, (C(7)H(11)N(2))(2)[LaCl(H(2)O)(8)]Cl(4)·3H(2)O, consists of two 4-(dimethyl-amino)-pyridinium and one [La(H(2)O)(8)Cl](2+) cations, four chloride anions and three solvent water mol-ecules. In the crystal, the various units are connected by N-H⋯Cl, O-H⋯Cl, O-H⋯O and N-H⋯O hydrogen bonds, forming a network of alternating organic and inorganic layers. The 4-(dimet...

In the title compound, [Cu(C(8)H(5)Cl(2)N(3)OS)(C(3)H(7)NO)]·C(3)H(7)NO, the Cu(II) atom is coordinated in a slightly distorted square-planar geometry by an O, an S and an N atom from the tridentate ligand 3,5-dichloro-salicylaldehyde thio-semi-carb-azonate ligand and one O atom from dimethyl-formamide. At the same time, the Cu atom is in contact with S and Cl atoms from another two complexes [...

The molecular organization at the aqueous dimethyl sulfoxide (DMSO) and methanesulfonic acid (MSA) surfaces was investigated using vibrational sum frequency generation (VSFG) spectroscopy and molecular dynamics (MD) simulation. The molecular orientation of surface DMSO and MSA is deduced based on the VSFG spectra of both C-H stretch and S-O stretch regions. The S-O stretch region was studied fo...

IN THE TITLE COMPOUND [SYSTEMATIC NAME: (tert-butyl-dimethyl-silyl)methane-triyl tris-(4-methyl-benzene-sulfonate)], C(32)H(44)O(10)S(3)Si, the central C atom and the Si(IV) center are in a tetra-hedral configuration. The inter-planar angles between pairs of the three benzene rings of the 4-methyl-phenyl-sulfonyl units are 41.15 (10), 18.11 (10) and 44.09 (10)°. C-H⋯π inter-actions are observed...

Mol-ecules of title compound, C(16)H(20)O(4)S, which was synthesized by the oxidation of isopropyl 2-(4,6-dimethyl-3-methyl-sulfanyl-1-benzofuran-2-yl)acetate, inter-act through C-H⋯π inter-actions between a methyl-ene H atom and the aromatic carbon ring of the benzofuran ring system, and by C-H⋯O hydrogen bonds. Adjacent stacked mol-ecules exhibit a carbon-yl-carbonyl inter-action [3.295 (2) Å...