No abstract

The asymmetric unit of the title compound, 3C26H10Cl4N4S4·2C8H10, contains 1.5 quinoxaline mol­ecules, one molecule having crystallographic inversion symmetry, and one para‐xylene solvent mol­ecule. The solvent molecules lie in channels along the [010] direction of the unit cell.

Key indicatorsSingle-crystal X-ray study T = 100 K Mean (C-C) = 0.003 Å R factor = 0.027 wR factor = 0.075 Data-to-parameter ratio = 9.2 For details of how these key indicators were automatically derived from the article, see A view of (I) (Farrugia, 1997). Displacement ellipsoids are drawn at the 50% probability level.

We have synthesized three bis (thienyl) quinoxalinesilver(I) complexes; however, unlike analogous silver(I) complexes of pyridylquinoxaline that utilize (N, N) bidentate behavior from the quinoxaline and pyridyl ring nitrogens, the bis(thienyl) quinoxaline ligands did not utilize the bonding potential of the thienyl rings to give (N, S) bonding modes. PES spectra modeling of these ligands indicates that the preferential metal bonding via only the quinoxaline nitrogen atoms is due to the N-rich, but S-poor, characters of the frontier orbitals.

The title compound, C8H9NO3, was synthesized from 4‐nitro­phenol and ethyl iodide via the Williamson ether synthesis. The crystal structure has been determined at 100 K.