Structure and pseudosymmetry of cholesterol at 310 K
The structure of cholesterol above the (304.8 K) phase transition, previously published in preliminary form [Hsu & Nordman (1983). Science, 220, 604–606], has been fully refined using augmented X‐ray data. The crystals are triclinic, space group P1, with (reassigned) cell parameters a = 27.565 (...
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| Veröffentlicht in: | Acta crystallographica. Section B, Structural science Structural science, 2002-04, Vol.58 (2), p.260-264 |
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| container_title | Acta crystallographica. Section B, Structural science |
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| creator | Hsu, Leh-Yeh Kampf, Jeff W. Nordman, Christer E. |
| description | The structure of cholesterol above the (304.8 K) phase transition, previously published in preliminary form [Hsu & Nordman (1983). Science, 220, 604–606], has been fully refined using augmented X‐ray data. The crystals are triclinic, space group P1, with (reassigned) cell parameters a = 27.565 (10), b = 38.624 (16), c = 10.748 (4) Å, α = 93.49 (3), β = 90.90 (3), γ = 117.15 (3)°, and V = 10151 (7) Å3. The unit cell contains Z = 16 molecules, of which eight are related to the other eight by unusual twofold rotational pseudosymmetry. The structure is related to the room‐temperature phase, with Z = 8, by a rearrangement of some of the molecules, and by a doubling of the a axis. |
| doi_str_mv | 10.1107/S0108768101018729 |
| format | Article |
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Section B, Structural science</title><addtitle>Acta Cryst. B</addtitle><description>The structure of cholesterol above the (304.8 K) phase transition, previously published in preliminary form [Hsu & Nordman (1983). Science, 220, 604–606], has been fully refined using augmented X‐ray data. The crystals are triclinic, space group P1, with (reassigned) cell parameters a = 27.565 (10), b = 38.624 (16), c = 10.748 (4) Å, α = 93.49 (3), β = 90.90 (3), γ = 117.15 (3)°, and V = 10151 (7) Å3. The unit cell contains Z = 16 molecules, of which eight are related to the other eight by unusual twofold rotational pseudosymmetry. 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| subjects | Aliphatic, non-condensed and condensed benzenic, and alicyclic compounds cholesterol Cholesterol - chemistry Condensed matter: structure, mechanical and thermal properties Crystallography, X-Ray Exact sciences and technology Molecular Structure Organic compounds phase transition Physics pseudosymmetry Structure of solids and liquids crystallography Structure of specific crystalline solids Temperature |
| title | Structure and pseudosymmetry of cholesterol at 310 K |
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