Brennessel, William W Crystal structure of (18-crown-6)potassium(I) [(1,2,3,4,5-η)-cyclo-hepta-dien-yl][(1,2,3-η)-cyclo-hepta-trien-yl]cobalt(I). [electronic resource] - Acta crystallographica. Section E, Crystallographic communications Mar 2015 - 291-5 p. digital Publication Type: Journal Article ISSN: 2056-9890 Standard No.: 10.1107/S2056989015003151 doi