Vibrational spectroscopic force field studies of dimethyl sulfoxide and hexakis(dimethyl sulfoxide)scandium(III) iodide, and crystal and solution structure of the hexakis(dimethyl sulfoxide)scandium(III) ion

Hexakis(dimethyl sulfoxide) scandium(III) iodide, [Sc(OS(CH3)(2))(6)]I-3 contains centrosymmetric hexasolvated scandium(III) ions with an Sc-O bond distance of 2.069(3) Angstrom. EXAFS spectra yield a mean Sc-O bond distance of 2.09(1) Angstrom for solvated scandium(III) ions in dimethyl sulfoxide solution, consistent with six-coordination. Raman and infrared absorption spectra have been recorded, also of the deuterated compound, and analysed by means of normal coordinate methods, together with spectra of dimethyl sulfoxide. The effects on the vibrational spectra of the weak intermolecular C-H...O interactions and of the dipole dipole interactions in liquid dimethyl sulfoxide have been evaluated, in particular for the S O stretching mode. The strong Raman band at 1043.6 cm(-1) and the intense IR absorption at 1062.6 cm(-1) have been assigned as the S-O stretching frequencies of the dominating species in liquid dimethyl sulfoxide, evaluated as centrosymmetric dimers with antiparallel polar S-O groups. The shifts of vibrational frequencies and force constants for coordinated dimethyl sulfoxide ligands in hexasolvated trivalent metal ion complexes are discussed. Hexasolvated scandium( III) ions are found in dimethyl sulfoxide solution and in [Sc(OSMe2)(6)]I-3. The iodide ion dipole attraction shifts the methyl group C H stretching frequency for (S-)C-H...I- more than for the intermolecular (S-)C-H...O interactions in liquid dimethyl sulfoxide

The effect of dimethyl sulfoxide on the sporicidal activity of ethylene oxide gas

Effect of dimethyl sulfoxide on sporicidal activity of ethylene oxide ga

Diclofenac solution (Pennsaid) in the management of osteoarthritis of the knee : Patient implications

Topical diclofenac sodium (pennsaid) is a non-steroidal-anti- inflammatory drug that is used to manage the recurrent pain and symptoms of osteoarthritis of the knee. Pennsaid is applied topically, absorbed cutaneously and concentrates locally at the site of application. Tugwell et al. [54] has shown that pennsaid is as efficacious as oral diclofenac as a mode of pain relief without systemic effects. The most common side effect induced by pennsaid is the development of dry skin at the site of application. This is caused by dimethyl sulfoxide which is the vehicle used in the pennsaid formulation. Dimethyl sulfoxide dissolves the natural oils in the skin causing dryness

cis-Bis(2,2′-bipyridine-κ2 N,N′)bis­(dimethyl sulfoxide-κO)zinc bis­(tetra­phenyl­borate) dimethyl sulfoxide monosolvate

In the mononuclear title complex, [Zn(C10H8N2)2(C2H6OS)2](C24H20B)2·C2H6OS, the ZnII ion is coordinated by four N atoms of two bidentate 2,2′-bipyridine mol­ecules and by the O atoms of two cis-disposed dimethyl sulfoxide mol­ecules in a distorted octa­hedral geometry. The S atom and the methyl groups of one of the coordinated dimethyl sulfoxide mol­ecules are disordered in a 0.509 (2):0.491 (2) ratio. The crystal packing is stabilized by C—H⋯O hydrogen bonds between the dimethyl sulfoxide solvent mol­ecules and tetra­phenyl­borate anions

Alkylation of ketones by use of solid KOH in dimethyl sulfoxide

A mixture of solid KOH in dimethyl sulfoxide has a strong basicity, but only a low nucleophilicity and is used for methylation of ketones. With this simple and inexpensive reagent complete methylation with yields up to 90% can be achieved

On the properties of a single OPLS-UA model curcumin molecule in water, methanol and dimethyl sulfoxide. Molecular dynamics computer simulation results

The properties of model solutions consisting of a solute --- single curcumin molecule in water, methanol and dimethyl sulfoxide solvents have been studied using molecular dynamics (MD) computer simulations in the isobaric-isothermal ensemble. The united atom OPLS force field (OPLS-UA) model for curcumin molecule proposed by us recently [J. Mol. Liq., 2016, 223, 707] in combination with the SPC/E water, and the OPLS-UA type models for methanol and dimethyl sulfoxide have been applied. We have described changes of the internal structure of the solute molecule induced by different solvent media in very detail. The pair distribution functions between particular fragments of a solute molecule with solvent particles have been analyzed. Statistical features of the hydrogen bonding between different species were explored. Finally, we have obtained a self-diffusion coefficient of curcumin molecules in three model solvents.Comment: 20 pages, 17 figures, 4 table

Morphology of polysorbate 80 (Tween 80) micelles in aqueous dimethyl sulfoxide solutions

A study of the structure of micelles of the surfactant polysorbate 80 in aqueous dimethyl sulfoxide solutions shows that the micelles change from core–shell cylinder micelles to core–shell discus micelles between concentrations of 20 and 30% dimethyl sulfoxide

Poly[(μ4-benzene-1,3,5-tricarboxyl­ato)bis­(dimethyl sulfoxide-κO)­neodymium(III)]

The asymmetric unit of the title compound, [Nd(C9H3O6)(C2H6OS)2]n, contains one Nd3+ ion, one benzene-1,3,5-tricarb­oxy­lic ligand and two coordinating dimethyl sulfoxide mol­ecules. The Nd3+ ion is coordinated by six O atoms from four carboxyl­ate groups of the benzene-1,3,5-tricarboxyl­ate ligands and two O atoms from two dimethyl sulfoxide mol­ecules. The metal-organic cluster formed upon symmetry expansion of the asymmetric unit consists of two metal atoms and four benzene-1,3,5-tricarboxyl­ate groups, creating a paddle-wheel-type building block arrangement. The remaining coordination sites are occupied by additional benzene-1,3,5-tricarboxyl­ate groups and dimethyl sulfoxide mol­ecules, forming a three-dimensional polymeric rare earth metal-organic framework structure

Bis[(dimethyl-λ4-sulfanyl­idene)oxonium] hexa­bromidotellurate(IV) dimethyl sulfoxide disolvate

The structure of the title salt, 2C2H7OS+·Br6Te2−·2C2H6OS, displays O—H⋯O hydrogen bonding between one protonated dimethyl sulfoxide mol­ecule and a neighboring dimethyl sulfoxide mol­ecule, and an octa­hedral geometry for the Te atom; the latter is situated on a center of inversion