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Crystal structures of three polymorphic forms of 4-hydroxy-3-methoxy-4′-nitro-trans-stilbene
Veröffentlicht/Copyright:
28. Juli 2010
Abstract
The structures of three polymorphic forms of 4-hydroxy-3-methoxy-4′-nitro-trans-stilbene (HMONS; C15H13NO4, Mr = 271.27) are reported. Crystal growth experiments of HMONS from different solvents and varying conditions showed the existence of three crystalline phases, red crystals with symmetry of the orthorhombic space group Pbca, with a = 7.811(2) Å, b = 13.410(4) Å, c = 24.597(5) Å (1), yellow crystals belonging to the monoclinic space group C2/c with lattice parameters a = 18.788(2) Å, b = 6.6945(5) Å, c = 21.013(2) Å, β = 90.761(6)° (2), and yellowish-orange crystals with space group symmetry P21, and a = 6.9302(12) Å, b = 13.493(4) Å, c = 7.247(2) Å, β = 102.08(2)° (3). The latter exhibits a powder second harmonic generation (SHG) efficiency 70 times as large as that of urea.
Published Online: 2010-7-28
Published in Print: 1998-8-1
© 2015 Oldenbourg Wissenschaftsverlag GmbH, Rosenheimer Str. 145, 81671 München
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Artikel in diesem Heft
- The average atomic volume and density of proteins
- The β-Sn dual structure: a 4-connected net based on a packing of simple polyhedra with 18 faces
- Synthesis and crystal structure of the new isotypic compounds KBi6O9X (X = Cl, Br, I)
- The crystal structure of Cu9.1(1)TeSb3, a stuffed derivative of Cr3Si
- Structure and properties of the layer compound NaZnAsO4 · 2H2O
- Strukturverfeinerung des monoklinen Tief-Tridymits MC mit Beugungsintensitäten eines verzwillingten Kristalls
- Überstruktur des Strontiumvanadiumoxids, Sr0,5V2O5: ihre Zwillingsbildung, Gruppoid-Symmetrie und Interpretation als OD-Struktur
- Structural refinement of crystals with m = n = 1 in the series of [M2Cu2O3]m[CuO2]n-type cuprates
- Crystal structures of three polymorphic forms of 4-hydroxy-3-methoxy-4′-nitro-trans-stilbene
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