.. index:: pair: struct; phase::IceXXIHit
.. _doxid-structphase_1_1_ice_x_x_i_hit:

struct phase::IceXXIHit
=======================

.. toctree::
	:hidden:

Ice XXI library: Lee et al., Nat. Mater. 25, 302 (2026), I-4 2d, Z=152, a=b=20.197 A, c=7.891 A, 1.413 g/cm^3. A hit also requires a tetrahedral four-nearest graph (mean coordination in [3.5, 4.5]) and an I-42d 4-NN fingerprint: six-ring census near 112, not the ice-I 2\*n law, and more than one local-key class. Occupancy and density alone are not a match.


.. ref-code-block:: cpp
	:class: doxyrest-overview-code-block

	#include <phase.hpp>
	
	struct IceXXIHit {
		// fields
	
		bool :target:`match<doxid-structphase_1_1_ice_x_x_i_hit_1a595d2dc59b6d161de41d79466ef740e3>` = false;
		int :target:`nSites<doxid-structphase_1_1_ice_x_x_i_hit_1a5661ccb01600822c76a777f890e6695b>` = 0;
		int :target:`nSix<doxid-structphase_1_1_ice_x_x_i_hit_1a5b206d823b13ee7168c0472f193ce03e>` = 0;
		int :target:`nClasses<doxid-structphase_1_1_ice_x_x_i_hit_1a6301718265906c57922c84478009b882>` = 0;
		double :target:`a<doxid-structphase_1_1_ice_x_x_i_hit_1ad460af558a81e77fe720269e23a9f4d7>` = 0.0;
		double :target:`c<doxid-structphase_1_1_ice_x_x_i_hit_1a1a872e0a52bd6f72e69777182083769b>` = 0.0;
		double :target:`density<doxid-structphase_1_1_ice_x_x_i_hit_1ad68eea6102729132f408bea7bb70585e>` = 0.0;
		double :target:`meanCoord<doxid-structphase_1_1_ice_x_x_i_hit_1ada69293ebab3b1ba2d813fe8cb7fa6a2>` = 0.0;
	};