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{{category water}}
{{category research}}
Ice "0"{{fn Tentative name; final phase name should be given when it is discovered experimentally.}} is a metastable ice polymorph discovered in the supercooled liquid water by computer simulations.[1]  According to our Vitrite Database,[2] ice 0 consists of two type of fragments; one is [[#34|vitrite:34]] fragment of 10 nodes (appeared as fragment "G" in Ref. 2) and the other is [[#874|vitrite:874]] fragment of 14 nodes.  Their appearance ratio is 1:1.  Their network topologies are: (in @NGPH format) 
::[[#34|vitrite:34]]
 @NGPH
 10
 9 8
 9 6
 6 5
 6 0
 3 2
 3 4
 0 1
 1 2
 8 4
 8 7
 7 2
 4 5
 -1 -1
::[[#874|vitrite:874]]
 @NGPH
 14
 7 13
 5 12
 11 10
 11 12
 3 11
 3 4
 3 2
 6 0
 6 5
 8 9
 8 7
 10 9
 1 9
 1 2
 0 7
 0 1
 4 5
 13 12
 -1 -1
The vitrite [[#34|vitrite:34]] is abundant in the supercooled liquid water while the vitrite  [[#874|vitrite:874]] is very rare.  Even the spontaneous clustering of [[#34|vitrite:34]] and [[#874|vitrite:874]] is not observed in the supercooled liquid.
!Reference
+Russo, J., Romano, F. & Tanaka, H. New metastable form of ice and its role in the homogeneous crystallization of water. Nat Mater (2014). [[DOI:10.1038/NMAT3977]]
+M. Matsumoto, A. Baba, and I. Ohmine,  J. Chem. Phys. 127, 134504 (2007). [[DOI:10.1063/1.2772627]]
{{footnote_list}}
(2014-12-9)

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