Jumping between water polymorphs

被引:15
作者
Ricci, MA
Soper, AK
机构
[1] Univ Roma 3, Dipartimento Fis E Amaldi, I-00146 Rome, Italy
[2] INFM, Unita Roma Tre, I-00146 Rome, Italy
[3] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England
[4] UCL, Dept Phys & Astron, London WC1E 6BT, England
关键词
water; neutron diffraction;
D O I
10.1016/S0378-4371(01)00516-7
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The three site-site partial structure factors of two polymorphs of water have been extrapolated from neutron diffraction experiments exploiting the isotopic H/D substitution performed on pure supercooled water. The low density polymorph has an open hydrogen-bonded structure, while the high density polymorph has non-tetrahedral O-O-O angles and a collapsed second coordination shell, which implies broken hydrogen bonds between the first and second neighboring shells. (C) 2002 Elsevier Science B.V. All rights reserved.
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页码:43 / 52
页数:10
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