 | Acta Crystallographica Section B Acta Crystallographica Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS |
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![[Figure 7]](av5066fig7mag.jpg)
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Figure 7
Proposed phase diagram of 1,2-diaminoethane. C.P. denotes the critical point at 0.067 GPa and 613.3 K (Wilson et al., 1996  ); b.p. the boiling point at 0.1 MPa and 391.2 K (Sigma–Aldrich, 2005); m.p. the melting point at 0.1 MPa and 284 K (Messerly et al., 1975); and Tp1 the temperature of the solid–solid phase transition at atmospheric pressure and 189 K (Messerly et al., 1975). The red crosses and hexagons show the thermodynamic coordinates of the known crystallographic structures. The dotted lines indicate phase boundaries and the dashed area indicates metastable regions between phases Iβ and III; the dot–dash line is the melting curve. |
![[Figure 7]](av5066fig7.jpg)
| STRUCTURAL SCIENCE CRYSTAL ENGINEERING MATERIALS |
ISSN: 2052-5206
