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Title: Synthesis and crystal structures of 5,5'-(propane-2,2-diyl)bis(2-hydroxybenzaldehyde) and 5,5'-(propane-2,2-diyl)bis(2-hydroxyisophthalaldehyde)

Abstract

The title compounds 5,5'-(propane-2,2-diyl)bis(2-hydroxybenzaldehyde), C17H16O4, (1), and 5,5'-(propane-2,2-diyl)bis(2-hydroxyisophthalaldehyde), C19H16O6, (2), crystallize with one molecule in the asymmetric unit. In molecule (1), a >C(CH3)2group bridges two nearly planar salicylaldehyde groups [r.m.s deviations = 0.010 (1) and 0.025 (2) Å], each comprising a planar phenyl ring bonded with a hydroxyl and an aldehyde group. Similarly, compound (2) has the same bridging group, but it connects two nearly planar appendants [r.m.s deviations = 0.034 (1) and 0.035 (1) Å], each comprising a phenyl ring bonded with a hydroxyl and two aldehyde groups. Molecule (1) exhibits a bridge angle of 109.5 (2)° with the salicylaldehyde planes subtending a dihedral angle of 88.4 (1)°. In contrast, molecule (2) presents a bridge angle of 108.9 (2)° with its appendants subtending a dihedral angle of 79.6 (3)°. Both molecules exhibit two intramolecular O—H...O hydrogen bonds involving the phenolic H atoms and carboxyl O-atom acceptors. In the crystal of (2), O—H...O hydrogen bonds between one of the hydroxyl H atoms and a carboxyl O atom from a symmetry-related molecule form a chain along [10\overline{1}]. In addition, (2) exhibits a strong visible luminescence when excited with ultraviolet radiation.

Authors:
 [1];  [2];  [3]
  1. US Army Research Laboratory, RDRL-WML-B, Aberdeen Proving Ground, MD (United States)
  2. US Army Research Laboratory, RDRL-WML-G, Aberdeen Proving Ground, MD (United States). Also an ORISE Postdoctoral Research Fellow
  3. US Army Research Laboratory, RDRL-WML-G, Aberdeen Proving Ground, MD (United States)
Publication Date:
Research Org.:
Oak Ridge Inst. for Science and Education (ORISE), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1630006
Grant/Contract Number:  
SC0014664
Resource Type:
Accepted Manuscript
Journal Name:
Acta Crystallographica. Section E, Crystallographic Communications
Additional Journal Information:
Journal Volume: 74; Journal Issue: 12; Journal ID: ISSN 2056-9890
Publisher:
International Union of Crystallography
Country of Publication:
United States
Language:
English

Citation Formats

Sausa, Rosario C., Lastovickova, Dominika N., and La Scala, John J. Synthesis and crystal structures of 5,5'-(propane-2,2-diyl)bis(2-hydroxybenzaldehyde) and 5,5'-(propane-2,2-diyl)bis(2-hydroxyisophthalaldehyde). United States: N. p., 2018. Web. doi:10.1107/S2056989018016316.
Sausa, Rosario C., Lastovickova, Dominika N., & La Scala, John J. Synthesis and crystal structures of 5,5'-(propane-2,2-diyl)bis(2-hydroxybenzaldehyde) and 5,5'-(propane-2,2-diyl)bis(2-hydroxyisophthalaldehyde). United States. https://doi.org/10.1107/S2056989018016316
Sausa, Rosario C., Lastovickova, Dominika N., and La Scala, John J. Thu . "Synthesis and crystal structures of 5,5'-(propane-2,2-diyl)bis(2-hydroxybenzaldehyde) and 5,5'-(propane-2,2-diyl)bis(2-hydroxyisophthalaldehyde)". United States. https://doi.org/10.1107/S2056989018016316. https://www.osti.gov/servlets/purl/1630006.
@article{osti_1630006,
title = {Synthesis and crystal structures of 5,5'-(propane-2,2-diyl)bis(2-hydroxybenzaldehyde) and 5,5'-(propane-2,2-diyl)bis(2-hydroxyisophthalaldehyde)},
author = {Sausa, Rosario C. and Lastovickova, Dominika N. and La Scala, John J.},
abstractNote = {The title compounds 5,5'-(propane-2,2-diyl)bis(2-hydroxybenzaldehyde), C17H16O4, (1), and 5,5'-(propane-2,2-diyl)bis(2-hydroxyisophthalaldehyde), C19H16O6, (2), crystallize with one molecule in the asymmetric unit. In molecule (1), a >C(CH3)2group bridges two nearly planar salicylaldehyde groups [r.m.s deviations = 0.010 (1) and 0.025 (2) Å], each comprising a planar phenyl ring bonded with a hydroxyl and an aldehyde group. Similarly, compound (2) has the same bridging group, but it connects two nearly planar appendants [r.m.s deviations = 0.034 (1) and 0.035 (1) Å], each comprising a phenyl ring bonded with a hydroxyl and two aldehyde groups. Molecule (1) exhibits a bridge angle of 109.5 (2)° with the salicylaldehyde planes subtending a dihedral angle of 88.4 (1)°. In contrast, molecule (2) presents a bridge angle of 108.9 (2)° with its appendants subtending a dihedral angle of 79.6 (3)°. Both molecules exhibit two intramolecular O—H...O hydrogen bonds involving the phenolic H atoms and carboxyl O-atom acceptors. In the crystal of (2), O—H...O hydrogen bonds between one of the hydroxyl H atoms and a carboxyl O atom from a symmetry-related molecule form a chain along [10\overline{1}]. In addition, (2) exhibits a strong visible luminescence when excited with ultraviolet radiation.},
doi = {10.1107/S2056989018016316},
journal = {Acta Crystallographica. Section E, Crystallographic Communications},
number = 12,
volume = 74,
place = {United States},
year = {Thu Nov 22 00:00:00 EST 2018},
month = {Thu Nov 22 00:00:00 EST 2018}
}

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