Common molecules sample 50982

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Empirical formula:	C₇H₈O₆
a:	5.794 Å
b:	4.719 Å
c:	28.688 Å
α (alpha):	90.00 °
β (beta):	95.08 °
γ (gamma):	90.00 °
Volume:	781.30 Å³
Space group:	P21/c
Calculated density:	1.599 g/cm³
Z:	4
Temperature:	22.0 °C
Formula weight:	188.137 g/mole
R(F):	0.0420
Structural formula:	C₇H₆O₅, H₂O₁
Common name:	gallic acid monohydrate
CSD refcode:	KONTIQ
Empirical formula - less solvent:	C₇H₆O₅
Common name:	Gallic acid
Short description:	Gallic acid is a colorless, crystalline, organic acid found in gallnuts, sumach, tea leaves, oak bark, and various other plants
Keyword:	tannin
Keyword:	dyes
Keyword:	organic acid
IUPAC name:	3,4,5-Trihydroxybenzoic acid monohydrate
Layman's explanation:	Gallic acid is found in its free state and combined with the tannin molecule, from which it can be extracted by the hydrolysis of tannic acid with sulfuric acid. Since one molecule of gallic acid has a carboxylic acid group and hydroxyl groups, it can react with another molecule of gallic acid to form an ester, digallic acid. When heated above 200oC, gallic acid loses carbon dioxide to form pyrogallol (1,2,3-trihydroxybenzene, C6H3(OH)3), which is used in the production of azo dyes, photographic developers, and in laboratories for absorbing oxygen.
Citation of a publication:	Ren-Wang Jiang, Dong-Sheng Ming, P.P.H.But,T.C.W.Mak; Acta Crystallogr.,Sect.C:Cryst.Struct.Commun., 56, (2000), 594
Lab name:	Common molecules
Sample provider:	Obtained courtesy of the Cambridge Structural Database
Status:	Complete, visible to public

Repository Files:
50982.crt	50982.gif	50982.ort	50982.pdb	50982.sdt
50982f.crt	50982f.pdb	50982f.sdt