NDLI: 2,4-Dibromo-1,3-dihydroxy-9H-xanthen-9-one

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Year: 2014 Volume: 70

Year: 2013 Volume: 69

Year: 2013 Volume: 69 Issue: Part 12

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Calcium hexakis(dihydrogenphosphito)stannate(IV), $Ca[Sn(H_{2}PO_{2})_{6}],$ with some remarks on the so-called $Ge_{2}(H_{2}PO_{2})_{6}$ structure type

$Tetraammine(carbonato-κ^{2}$ O,O′)cobalt(III) perchlorate

$K_{0.78}Na_{0.22}MoO_{2}AsO_{4}$

Redetermination of $MgCrO_{4}·5H_{2}O$

Distrontium trimanganese(II) bis(hydrogenphosphate) bis(orthophosphate)

Pentazirconium copper tribismuth

$RbCuFe(PO_{4})_{2}$

$Na_{7}Al_{3}(As_{2}O_{7})_{4}$

Poly[μ-aqua-μ-(N,4-dichloro-2-methylbenzenesulfonamidato)-potassium]

catena-Poly[[triphenyltin(IV)]-μ-N-(4-acetylphenyl)maleamato]

Bis(1-ethyl-4,4′-bipyridin-1-ium) $bis(1,2-dicyanoethene-1,2-dithiolato-κ^{2}$ S,S′)nickelate(II)

$(2,2′-Bipyridyl-κ^{2}$ $N,N′)bis(η^{5}-pentamethylcyclopentadienyl)barium$

$Tris(2-formylphenolato-κ^{2}$ $O,O′)(1,10-phenanthroline-κ^{2}$ N,N′)samarium(III)

$Tetrakis(μ-3-chlorobenzoato-κ^{2}$ O:O′)bis[(N,N-diethylnicotinamide-κN $^{1})copper(II)]$

{2-[2,2-Bis(4,4-dimethyl-4,5-dihydro-1,3-oxazol-2-yl-κN)propyl]pyridine}dichloridoiron(II)

Dichloridobis[3-(4-methoxyphenyl)-2-methyl-5-(piperidin-1-yl)-2,3-dihydro-1,2,4-oxadiazole-κN $^{4}]platinum(II)$

catena-Poly[heptylenediammonium [[tetrachloridobismuthate(III)]-μ-chlorido]]

Triaqua(pyrazole-4-carboxylato-κN $^{1})lithium$

$Diaquabis[2-(2-hydroxyethyl)pyridine-κ^{2}$ N,O]cobalt(II) dichloride

Trichlorido(1,3-dimethyl-2,3-dihydro-1H-imidazol-2-ylidene-κC $^{2})aluminium(III)$

$Bis[2-(1,3-benzothiazol-2-yl)phenyl-κ^{2}$ C $^{1},N][1,3-bis(4-bromophenyl)propane-1,3-dionato-κ^{2}$ O,O′]iridium(III)

$(5,10,15,20-Tetraphenylporphyrinato-κ^{4}$ N)zinc–18-crown-6 (1/1)

Dichloridobis[3-(4-chlorophenyl)-2,N,N-trimethyl-2,3-dihydro-1,2,4-oxadiazole-5-amine-κN $^{4}]platinum(II)–4-chlorobenzaldehyde$ (1/1)

$(2,2′-Bipyridine-κ^{2}$ N,N′)tetrakis(dimethyl sulfoxide-κO)copper(II) bis(perchlorate)

Tetrakis(pyridine-κN)bis(tetrafluoridoborato-κF)copper(II)

catena-Poly[[[tetraaquamagnesium]-trans-μ-[(piperazine-1,4-diium-1,4-diyl)bis(methylene)]diphosphonato] hemihydrate]

$Diaquabis(pyridine-2-carboxylato-κ^{2}$ N,O)zinc dimethylformamide hemisolvate

Bis[μ-3,5-bis(pyridin-2-yl)pyrazolato]bis[(hexafluorophosphato)copper(II)]

$Bis\{N-benzyl-N-[2-(thiophen-2-yl)ethyl]dithiocarbamato-κ^{2}$ S,S′}lead(II)

Aquabis(3-chlorobenzoato-κO)bis(N,N-diethylnicotinamide-κN)copper(II)

Methanol-κO)-cis-dioxido{(4Z,N′E)-N′-[(Z)-4-oxido-4-phenylbut-3-en-2-ylidene]isonicotinohydrazidato}molybdenum(VI

Tetraethylammonium dicyanido(5,10,15,20-tetraphenylporphyrinato)ferrate(III) dichloromethane monosolvate

Poly[[μ-bis(4-nitrophenyl) $phosphato-κ^{2}$ O,O′]sodium]

$catena-Poly[[aquabis(3-chlorobenzoato-κ^{2}$ $O,O′)cadmium]-μ-N,N-diethylnicotinamide-κ^{2}$ N $^{1}:O]$

$(Azido-κN)\{(E)-2-[1-(pyridin-2-yl)ethylideneamino]phenolato-κ^{3}$ N,N′,O}copper(II)

Diammonium tetrakis(isothiocyanato)zincate–1,4,10,13,16-hexaoxacyclooctadecane–water (1/2/1)

[5,10,15,20-Tetrakis(4-methoxyphenyl)porphyrinato]zinc dichloromethane disolvate

$trans-Bis(μ-benzenethiolato-κ^{2}$ S:S)bis[chlorido(triphenylphosphane-κP)palladium(II)] chloroform disolvate

Bis(cyclohexylammonium) tetrachlorido(oxalato)stannate(IV)

$trans-Acetyldicarbonyl(η^{5}-cyclopentadienyl)[tris(furan-2-yl)phosphane-κP]molybdenum(II)$

catena-Poly[ammonium [aquabis(μ-2,3,5,6-tetraoxo-4-nitropyridin-4-ido)argentate(I)]]

4-Chlorobutyl 7-chloro-1-cyclopropyl-4-(1,3-diethyl-4,6-dioxo-2-sulfanylidene-1,3-diazinan-5-ylidene)-6-fluoro-1,4-dihydroquinoline-3-carboxylate

2-[1′-(Benzyloxy)spiro[indane-1,2′-pyrrolidine]-5′-yl]acetonitrile

1′-(1,3-Diphenyl-1H-pyrazol-4-yl)-1′′-(prop-2-en-1-yl)-2′,3′,5′,6′,7′,7a’-hexahydro-1′H-dispiro[1-benzopyran-3,2′-pyrrolizine-3′,3′′-indoline]-2′′,4-dione 0.75-hydrate

3-{5-Bromo-2-[(triphenylphosphanylidene)amino]phenyl}-4,5-dihydro-1,2,3-oxadiazol-3-ylium-5-olate

(2S,3R)-3-(2-Bromophenyl)-2-nitro-2,3,6,7-tetrahydro-1-benzofuran-4(5H)-one

2,2′-[(4-Methyl-2-phenylimidazolidine-1,3-diyl)bis(methylene)]diphenol

$14-Methoxy-4,6-dimethyl-9-phenyl-8,12-dioxa-4,6-diazatetracyclo[8.8.0.0^{2,7}.0^{13,18}]octadeca-2(7),13,15,17-tetraene-3,5,11-trione$

(Naphthalen-1-yl){2-[(5,6,7,8-tetrahydronaphthalen-2-yl)carbonyl]phenyl}methanone

5-Fluoro-3-phenyl-N′-(4-propylcyclohexylidene)-1H-indole-2-carbohydrazide

1-(2,4-Dinitrophenyl)-2-[(E)-2,4,5-trimethoxybenzylidene]hydrazine

3-(4-Bromophenylsulfinyl)-2,5,6-trimethyl-1-benzofuran

Bifenox: methyl 5-(2,4-dichlorophenoxy)-2-nitrobenzoate

5′′-(4-Nitrobenzylidene)-7′-(4-nitrophenyl)-1′′-methyl-1′,3′,5′,6′,7′,7a′-hexahydrodispiro[acenaphthylene-1,5′-pyrrolo[1,2-c][1,3]thiazole-6′,3′′-piperidine]-2,4′′(1H)-dione including an unknown solvate

5-Chloro-3-ethylsulfinyl-2-(3-fluorophenyl)-1-benzofuran

5-Fluoro-N′-(4-methylcyclohexylidene)-3-phenyl-1H-indole-2-carbohydrazide

5-Chloro-2-(4-methylphenyl)-3-methylsulfinyl-1-benzofuran

Methyl 3′-benzyl-4′-(2-chlorophenyl)-1′-methyl-2-oxospiro[indoline-3,2′-pyrrolidine]-3′-carboxylate

2-Chloro-N-(3-methoxybenzoyl)benzenesulfonamide

Bis(1,3-dimethyl-1H-imidazolium) hexafluorosilicate methanol 0.33-solvate

Bis(1,3-dimethyl-1H-imidazolium) hexafluorosilicate: the second monoclinic polymorph

1-(2-Chlorophenyl)-3-(2-ethylhexanoyl)thiourea

2,2′-{[2-(2-Chlorophenyl)-4-methylimidazolidine-1,3-diyl]bis(methylene)}diphenol

(Z)-Ethyl 2-cyano-3-(1H-imidazol-2-yl)acrylate

2,3-Trimethylene-7,8-dihydropyrrolo[1,2-a]thieno[2,3-d]pyrimidin-4(6H)-one

3-[(E)-(Benzyliminiumyl)methyl]-6,8-dichloro-2H-chromen-4-olate

(E)-6,8-Dichloro-3-{[(naphthalen-1-ylmethyl)iminiumyl]methyl}-2H-chromen-4-olate

3-(4-Aminophenyl)-5-(4-methoxyphenyl)-4,5-dihydro-1H-pyrazole-1-carbothioamide

5-Fluoro-N-(2-methyl-3-oxo-1-thia-4-azaspiro[4.5]dec-4-yl)-3-phenyl-1H-indole-2-carboxamide

N-Butanoyl-N-(3-chloro-1,4-dioxonaphthalen-2-yl)butanamide

Ethyl (Z)-4′-(4-ethoxy-1-hydroxy-3,4-dioxobut-1-en-1-yl)-[1,1′-biphenyl]-3-carboxylate

N-(3-Methoxybenzoyl)-2-methylbenzenesulfonamide

5-[(4-Benzyl-1H-1,2,3-triazol-1-yl)methyl]-5H-dibenzo[b,f]azepine

4-Fluoro-N-[(E)-3,4,5-trimethoxybenzylidene]aniline

2-Amino-4,6-dimethylpyrimidine–sorbic acid (1/1)

4-Sulfamoylanilinium perchlorate

Tenulin 0.25-hydrate, a sesquiterpene lactone isolated from Helenium amarum

Ethyl 3-(4-chlorophenyl)-2-phenyl-3-(4-phenyl-1,2,3-selenadiazol-5-yl)propanoate

2-[(2-Chlorophenyl)(hydroxy)methyl]phenol

1,4-Bis(2-diazoacetyl)piperazine

Ethyl 2-(5-methoxy-2-methyl-1H-indol-3-yl)acetate

2-(4-Chlorophenyl)-1-pentyl-4,5-diphenyl-1H-imidazole

Ethyl 3-amino-5-anilino-4-cyanothiophene-2-carboxylate

2-Bromo-5-fluorobenzaldehyde

7-Benzyl-3-methyl-6-phenylimidazo[2,1-b][1,3]thiazol-7-ium chloride 0.75-hydrate

N′-(2,4-Dinitrophenyl)acetohydrazide monohydrate

(E)-1-[(2,4,6-Tribromophenyl)diazenyl]naphthalen-2-ol

1-(5-Bromo-2-oxoindolin-3-ylidene)thiosemicarbazone

Dimethylphosphoryl)methanaminium iodide–(dimethylphosphoryl)methanamine (1/1

2,2-Diphenyl-N-{[2-(trifluoromethyl)phenyl]carbamothioyl}acetamide

Allyl 2-(2,2-dimethyl-3a,6a-dihydrofuro[3,2-d][1,3]dioxol-5-yl)-4-oxo-4H-chromene-3-carboxylate

4-Phenyl-1,2,4-triazaspiro[4.5]dec-1-ene-3-thione

2,2′-[Ethane-1,2-diylbis(oxy)]dibenzaldehyde

$(1S,3S,8R,9S,11R)-10,10-Dibromo-3,7,7,11-tetramethyltetracyclo[6.5.0.0^{1,3}.0^{9,11}]tridecane$

Methyl 5-(4-acetoxyphenyl)-2-(2-bromobenzylidine)-7-methyl-3-oxo-2,3-dihydro-5H-1,3-thiazolo[3,2-a]pyrimidine-6-carboxylate

N-(3-Methoxybenzoyl)-4-methylbenzenesulfonamide

Carbinoxaminium dipicrate

Bis(2,4,6-triaminopyrimidin-1-ium) sulfate pentahydrate

N′-(3-Sulfanylidene-3,4-dihydroquinoxalin-2-yl)benzohydrazide dimethylformamide monosolvate

Ethyl 1,4-bis(4-chlorophenyl)-2-methyl-1H-pyrrole-3-carboxylate

(2S,3S)-3-(3-Bromophenyl)-6,6-dimethyl-2-nitro-2,3,6,7-tetrahydrobenzofuran-4(5H)-one

(Z)-3-Methyl-4-[1-(4-methylanilino)propylidene]-1-phenyl-1H-pyrazol-5(4H)-one

3,4-Dimethylthieno[2,3-b]thiophene-2,5-dicarbonitrile

2-[(1,3-Benzothiazol-2-yl)iminomethyl]-6-methoxyphenol: a new monoclinic polymorph

(2E)-3-(6-Chloro-2-methoxyquinolin-3-yl)-1-(2,4-dimethylquinolin-3-yl)prop-2-en-1-one

(2E)-3-(2-Chloro-8-methylquinolin-3-yl)-1-(2,4-dimethylquinolin-3-yl)prop-2-en-1-one

[(4E)-1-Methyl-2,6-diphenyl-3-(propan-2-yl)piperidin-4-ylidene]amino 3-methylbenzoate

3-Hydroxyanilinium p-toluenesulfonate

1,4,8,11-Tetraazoniacyclotetradecane tetrakis(hydrogensulfate)

5-Amino-1H-1,2,4-triazol-4-ium hydrogen oxalate

N,N-Diethyl-4-[(E)-(pyridin-3-yl)diazenyl]aniline

2-Cyano-1-methylpyridinium iodide

$2-(10′,10′-Dimethyl-3′-sulfanylidene-4′-azatricyclo[5.2.1.0^{1,5}]decan-2′-yl)-10,10-dimethyl-4-azatricyclo[5.2.1.0^{1,5}]decane-3-thione$

$(1S,3R,8R,11S)-11-Bromo-10-bromomethyl-2,2-dichloro-3,7,7-trimethyltricyclo[6.4.0.0^{1,3}]dodec-9-ene$

2-tert-Butyl-3-phenyl-2,3-dihydroisoxazole-4,5-diyl)bis(phenylmethanone

5-(4-Chlorophenyl)-7-(4-methylphenyl)-4-(pyrrolidin-1-yl)-7H-pyrrolo[2,3-d]pyrimidine

2-Cyanoanilinium iodide

(E)-Benzyl(1-phenylethylidene)amine

5′′-(2-Fluorobenzylidene)-1′-(2-fluorophenyl)-1′′-methyl-1′,2′,3′,5′,6′,7′,8′,8a’-octahydrodispiro[acenaphthylene-1,3′-indolizine-2′,3′′-piperidine]-2,4′′(1H)-dione

1-(4-Methoxyphenyl)-2-[4-(trifluoromethyl)phenyl]-1H-phenanthro[9,10-d]imidazole

2,2′-{[2-(2-Hydroxyphenyl)-4-methylimidazolidine-1,3-diyl]bis(methylene)}diphenol

3-[1-(2-Hydroxyanilino)ethylidene]-3H-chromen-2,4-dione

N-tert-Butoxycarbonyl-α-(2-fluorobenzyl)-l-proline

Thiophene-2-carbonyl azide

3-(2-Bromophenylsulfinyl)-2,5,7-trimethyl-1-benzofuran

N $^{2}-(4-Methoxysalicylidene)arginine$ hemihydrate

4-(2-Hydroxyethoxy)phenol

2-Hydroxy-N′-methyl-5-nitrobenzohydrazide

2-(Diphenylmethylidene)-2,3-dihydro-1H-inden-1-one

Absolute configuration of $(1R,3S,8R,11R)-3,7,7,10-tetramethyltricyclo[6.4.0.0^{1,3}]dodec-9-en-11-ol$

Methyl 2-(2,2-dimethyl-3a,6a-di-hydro-furo[3,2-d][1,3]dioxol-5-yl)-4-oxo-4H-chromene-3-carboxyl-ate.

2-(Benzyloxy)isoquinoline-1,3(2H,4H)-dione

2-Hydroxyisoquinoline-1,3(2H,4H)-dione

2-(4-Oxo-3-phenyl-1,3-thiazolidin-2-ylidene)propanedinitrile

$1,10,10-Trimethyl-5-phenyl-3-oxa-4-azatricyclo[5.2.1.0^{2,6}]dec-4-en-2-ol$

2-[1-(2-Hydroxy-4-methoxyphenyl)ethylidene]-N-methylhydrazinecarbothioamide

N,N-Diethyl-4-[1-phenyl-3-(pyridin-2-yl)-4,5-dihydro-1H-pyrazol-5-yl]aniline

2-Chloro-3-[(2-oxo-2H-chromen-6-yl)amino]naphthalene-1,4-dione

(2E)-3-(2-Chloro-8-methylquinolin-3-yl)-1-(2-methyl-4-phenylquinolin-3-yl)prop-2-en-1-one

(2E)-3-(6-Chloro-2-methoxyquinolin-3-yl)-1-(2-methyl-4-phenylquinolin-3-yl)prop-2-en-1-one acetone monosolvate

N′-Phenyl-N′-[3-(2,4,5-triphenyl-2,5-dihydro-1H-pyrazol-3-yl)quinoxalin-2-yl]benzohydrazide

1-[(E)-2-(2-Hydroxy-5-methylphenyl)diazen-2-ium-1-yl]naphthalen-2-olate

(1Z,2E)-1-(3,4-Diphenyl-2,3-dihydro-1,3-thiazol-2-ylidene)-2-(1-p-tolylethylidene)hydrazine

1,3-Bis[(5-aminofuran-2-yl)methyl]-3,4,5,6-tetrahydropyrimidin-1-ium hexafluorophosphate

2-[4-(2-Chloroacetyl)phenyl]-2-methyl-1-(pyrrolidin-1-yl)propan-1-one

1-Benzoyl-4-thiobiuret

1-Ethyl-4′-(1H-indol-3-ylcarbonyl)-1′-methyl-2,2′′-dioxodispiro[indoline-3,2′-pyrrolidine-3′,3′′-indoline]-4′-carbonitrile dimethyl sulfoxide monosolvate

1-(2,6-Diisopropylphenyl)-1H-benzimidazole

N′-(4-Ethylcyclohexylidene)-5-fluoro-3-phenyl-1H-indole-2-carbohydrazide

1-[6-(3,5-Dimethylpyrazol-1-yl)-1,2,4,5-tetrazin-3-yl]guanidin-2-ium perchlorate methanol monosolvate

A triclinic polymorph of (E)-2-(4-isobutylphenyl)-N′-[1-(4-nitrophenyl)ethylidene]propanohydrazide

5-[1-(1,3-Dimethyl-2,4,6-trioxohexahydropyrimidin-5-yl)-2-oxopropyl]-1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione

(E)-1-(2-Phenyldiazen-2-ium-1-yl)naphthalen-2-olate

1-(5-Bromo-2-oxoindolin-3-ylidene)-4-phenylthiosemicarbazide

3-Amino-4-(1,3-benzoxazol-2-yl)-5-(cyclohexylamino)thiophene-2-carbonitrile

2-Hydroxymethyl-1,3-dimethyl-1H-imidazol-3-ium triiodide

N′-{(E)-[5-(Hydroxymethyl)furan-2-yl]methylidene}pyridine-4-carbohydrazide dihydrate

Flunarizinium hydrogen maleate

1′′-Allyl-5′′-(4-methoxybenzylidene)-7′-(4-methoxyphenyl)-1′,3′,5′,6′,7′,7a′-hexahydrodispiro[acenaphthylene-1,5′-pyrrolo[1,2-c][1,3]thiazole-6′,3′′-piperidine]-2,4′′(1H)-dione

E)-2,2′-[3-(4-Chlorophenyl)prop-2-ene-1,1-diyl]bis(3-hydroxy-5,5-dimethylcyclohex-2-en-1-one

1-Dichloroacetyl-t-3-isopropyl-r-2,c-6-diphenylpiperidin-4-one

2-[(E)-(5-Chloro-2-methylphenyl)iminomethyl]-4-methylphenol

$(1S,3S,8R,10R,11R)-3,7,7,10-Tetramethyltricyclo[6.4.0.0^{1,3}]dodecan-11-ol$

Bruceolline J: 2-hydroxy-3,3-dimethyl-2,3-dihydrocyclopenta[b]indol-1(4H)-one

N-(2-Allyl-4-chloro-2H-indazol-5-yl)-4-methoxybenzenesulfonamide hemihydrate

(E)-2-[(2-Formylphenoxy)methyl]-3-(4-isopropylphenyl)acrylonitrile

4-[4-(Heptyloxy)benzoyloxy]phenyl 2-oxo-7-trifluoromethyl-2H-chromene-3-carboxylate

Quinoline-2-sulfonamide

Bis(1-ethyl-3-methylimidazolium) 3,6-diselanylidene-1,2,4,5-tetraselena-3,6-diphosphacyclohexane-3,6-diselenolate

2,4-Dibromo-1,3-dihydroxy-9H-xanthen-9-one

Tris(4-formylphenyl)phosphane oxide tetrahydrofuran hemisolvate

2-Diphenylphosphanyl-1-methyl-1H-benzimidazole

Year: 2013 Volume: 69 Issue: Part 7

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2,4-Dibromo-1,3-dihydroxy-9H-xanthen-9-one

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Huang, Shi-wen Yang, Zheng-min Huang, Fu-ping Qin, Jiang-ke
Description	Author Affiliation: Huang SW ( Key Laboratory for the Chemistry & Molecular Engineering of Medicinal Resources, Ministry of Education of China, School of Chemistry & Chemical Engineering, Guangxi Normal University, Guilin, 541004, People's Republic of China )
Abstract	The title compound, $C_{13}H_{6}Br_{2}O_{4},$ derived from xanthone, a fundamental structural framework of active ingredients in many medicinal plants, and was synthesized by bromination of 1,3-dihydroxyxanthen-9-one with N-bromosuccinimide. The molecular conformation is essentially planar, the dihedral angle between the benzene rings being 1.1 (4)°. This conformation is favorable for the formation of an intramolecular O—H⋯O hydrogen bond between a hydroxy group and the xanthone carbonyl group. In the crystal, molecules are associated into chains along the b-axis direction via C=O⋯H—O hydrogen bonds involving the other hydroxy group.
ISSN	20569890
e-ISSN	16005368
Journal	Acta Crystallographica Section E Structure Reports Online
Issue Number	Pt 8
Volume Number	69
Language	English
Publisher	IUCr/Wiley
Publisher Date	2013-01-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	Crystallography
Content Type	Text
Resource Type	Article
Subject	Chemistry Condensed Matter Physics Materials Science

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