A transition that requires the
rearrangement of atoms, ions or molecules in a manner that cannot be accomplished by a cooperative
atomic displacement; it may require the movement of atoms, ions or molecules over
distances significantly larger than a
unit cell. Example: The transition of
graphite (hexagonal sheets of three-coordinated carbon atoms) to
diamond (infinite three-dimensional framework of four-coordinated carbon atoms) at high temperature
and pressure.
Source:
PAC, 1994, 66, 577
(Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations
1994))
on page 581
Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
https://doi.org/10.1351/goldbook.
