Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 27th March 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.

Issue 14, 1976
Previous Article Next Article

Crystal structure of dipotassium pentasulphide


Crystals of K2S5 are orthorhombic, space group P212121 with Z= 4 in a unit cell of dimensions: a= 6.494(1), b= 6.600(2), c= 17.414(5)Å. The structure has been elucidated by vector methods from 656 independent diffracted intensities measured on a four-circle diffractometer and refined to R 0.045. The [S5]2– anion exists as a contorted but unbranched chain in which successive S–S bond lengths are 2.037, 2.074, 2.075, and 2.050(5)Å, and the bond angles are close to tetrahedral. The torsions in the chain around the S(2)–(3) and S(3)–S(4) bonds are 74 and 69° respectively. The potassium ions are evenly distributed between the S5 units with minimum K ⋯ S 3.215(4)Å, and a nearest-neighbour K ⋯ K of just under 4 Å.

Back to tab navigation

Article type: Paper
DOI: 10.1039/DT9760001314
Citation: J. Chem. Soc., Dalton Trans., 1976,0, 1314-1316

  •   Request permissions

    Crystal structure of dipotassium pentasulphide

    B. Kelly and P. Woodward, J. Chem. Soc., Dalton Trans., 1976, 0, 1314
    DOI: 10.1039/DT9760001314

Search articles by author