Foundations of Chemistry

, Volume 9, Issue 2, pp 119–125

The chemical ‘Knight’s Move’ relationship: what is its significance?

Authors

    • Chemistry Department, Sir Wilfred Grenfell CollegeUniversity Drive
  • Megan Oldford
    • Chemistry Department, Sir Wilfred Grenfell CollegeUniversity Drive
Article

DOI: 10.1007/s10698-007-9034-1

Cite this article as:
Rayner-Canham, G. & Oldford, M. Found Chem (2007) 9: 119. doi:10.1007/s10698-007-9034-1

Abstract

Similarities in properties among pairs of metallic elements and their compounds in the lower-right quadrant of the Periodic Table have been named the ‘Knight’s Move’ relationship. Here, we have undertaken a systematic study of the only two ‘double-pairs’ of ‘Knight’s Move’ elements within this region: copper-indium/indium-bismuth and zinc-tin/tin-polonium, focussing on: metal melting points; formulas and properties of compounds; and melting points of halides and chalcogenides. On the basis of these comparisons, we conclude that the systematic evidence for ‘Knight’s Move’ relationships derives from similarities in formulas and properties of matching pairs of compounds in the same oxidation state. Physical properties, such as melting points, do not provide consistent patterns and trends and hence should not be considered as a common characteristic of this relationship.

Keywords

Periodic tablePeriodic patternsKnight's moveCopperIndiumBismuth ZincTinPoloniumChemical formulasMelting points

Copyright information

© Springer Science+Business Media, Inc. 2007