Rotational Isomers in Methyl Ethyl Sulfide.

cis-Dichloridobis(ethyl methyl sulfide-κS)oxidovanadium(IV)

The mononuclear title complex, [VCl2O(C3H8S)2], features a V(IV)=O double bond [1.5845 (15) Å] in an overall trigonal-bipyramidal coordination environment defined by two Cl(-) and the S atoms of two (CH3CH2)(CH3)S ligands. In the crystal, pairs of mol-ecules form centrosymmetric dimers via C-H⋯O hydrogen bonds between the methyl C-H group and the oxidovanadium O atom of a neighbouring mol-ecule.

Synthesis and Structure of Geometric Isomers of 1-[(methoxyimino)ethyl]- ferrocene and Methyl 1'-[(methoxyimino)ethyl]ferrocene-1-carboxylate

Here we report synthesis, spectral data and single-crystal X-ray molecular and crystal structures of (E)-1-[(methoxyimino)ethyl] ferrocene (2) and (E)-methyl 1'-[(methoxyimino)ethyl]ferrocene-1carboxylate (4). These organometallics are recognized as precursors for optically pure (1ferrocenylethyl)amine (Fea) and 1'-(1-aminoethyl)ferrocene-1-carboxylic acid (Fcca) derivatives. The (E/Z)mixtures...

Spectroscopic separation of the methyl internal-rotational isomers of thioanisole isotopomers (C6H5S-CH2D and C6H5S-CHD2).

Two distinct rotational isomers of thioanisole-d1 (C6H5S-CH2D) and thioanisole-d2 (C6H5S-CHD2) with respect to the internal rotation of the methyl moiety have been identified and characterized spectroscopically using the resonantly enhanced two photon ionization, UV-UV hole burning, and slow-electron velocity map imaging techniques. From the statistical weights, the definite assignment for the ...

Methyl ethyl ketone peroxide

2-Ethyl 4-methyl 5-ethyl-3-methyl-1H-pyrrole-2,4-dicarboxyl­ate

The title pyrrole derivative compound, C(12)H(17)NO(4), was synthesized from methyl 3-oxopenta-noate by a Knorr-type reaction and contains a pyrrole ring to which two diagonal alk-oxy-carbonyl groups and two diagonal alkyl substituents are attached. The methyl-carbonyl and ethyl-carbonyl substituents are approximately co-planar with the pyrrole ring, making dihedral angles of 5.64 (2) and 3.44 ...