Tetramethyl Carboxylic Acids Derived fromo-Phenylenediamines as Sequestering Agents for Iron(III):  Thermodynamic Studies. X-ray Crystal Structure of Sodium Aqua(4-chloro-1,2-phenylenediamine-N,N,N‘,N‘-tetraacetato)ferrate(III)−Water (1/1.5)

1997 ◽  
Vol 36 (18) ◽  
pp. 4108-4114 ◽  
Author(s):  
Joaquín Sanchiz ◽  
Sixto Domínguez ◽  
Alfredo Mederos ◽  
Felipe Brito ◽  
Juan Manuel Arrieta
Keyword(s):  
Crystal Structure ◽  
Carboxylic Acids ◽  
Thermodynamic Studies ◽  
X Ray

Influence of carboxylic acids on the reactions with chlorotetraacetatodiruthenium(II,III): X-ray crystal structure of [Ru2(μ-O2CC4H3S)4(OPPh3)2]BF4·2H2O

Polyhedron ◽  
1995 ◽  
Vol 14 (17-18) ◽  
pp. 2419-2427 ◽  
Author(s):  
M.C. Barral ◽  
R. Jimenez-Aparicio ◽  
J.L. Priego ◽  
E.C. Royer ◽  
M.J. Saucedo ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Carboxylic Acids ◽  
X Ray

The chlorination of some 2,6-substituted 4-chlorophenols; X-ray crystal structure of (E)-(2RS,5RS)-2,4,5,6,6-Pentachloro-2-methyl-6-nitrohex-3-enoic acid

1984 ◽  
Vol 37 (9) ◽  
pp. 1963 ◽  
Author(s):  
MP Hartshorn ◽  
RJ Martyn ◽  
J Vaughan
Keyword(s):  
Crystal Structure ◽  
Acetic Acid ◽  
Hydrochloric Acid ◽  
Carboxylic Acids ◽  
Structure Analysis ◽  
Crystal Structure Analysis ◽  
Enoic Acid ◽  
X Ray

Chlorination of 4-chloro-2-methyl-6-nitrophenol (4) with chlorine in acetic acid containing concentrated hydrochloric acid gives the epimeric acyclic carboxylic acids (6) and (7). The structure of compound (6) was determined by X-ray crystal structure analysis. No such acyclic compounds are formed in similar chlorinations of 2,4-dichloro-6-nitrophenol (13a) or 2,4-dichloro-6-methylphenol (13b). The mode of formation of compounds (6) and (7) is discussed.

Synthesis, X-ray crystal structure and solubility of a new zinc–naproxen complex: Potentiometric and thermodynamic studies in methanol + water mixtures

2016 ◽  
Vol 224 ◽  
pp. 684-693 ◽  
Author(s):  
Ali Akbar Khandar ◽  
Zeinab Mirzaei-Kalar ◽  
Jonathan White ◽  
Seyed Abolfazl Hosseini-Yazdi ◽  
Abolghasem Jouyban
Keyword(s):  
Crystal Structure ◽  
Thermodynamic Studies ◽  
X Ray

Group 15 Metal Complexes With Carboxylic Acids. Preparation and Crystal Structure of Polymeric Ammonium Aquabis[(+)-tartrato(2-)]bismuthate(III) Hydrate

1992 ◽  
Vol 45 (6) ◽  
pp. 1027 ◽  
Author(s):  
DS Sagatys ◽  
EJ Oreilly ◽  
S Patel ◽  
RC Bott ◽  
DE Lynch ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Metal Complexes ◽  
Tartaric Acid ◽  
Carboxylic Acids ◽  
Orthorhombic Space Group ◽  
X Ray ◽  
Hydrogen Bonding Interactions ◽  
A Cell ◽  
Ray Methods

The crystal structure of the bismuth(III) complex with (+)-tartaric acid, ammonium aquabis [(+)-tartrato (2-)] bismuthate (III) hydrate, has been determined by X-ray methods and refined to a residual R 0.020 for 1288 observed reflections. Crystals are orthorhombic, space group P 212121 with Z 4 in a cell of dimensions a 7.4712(4), b 10.856(1), c 17.609(3) � . Each nine-coordinate MO9 bismuth centre comprises three bidentate α-hydroxy carboxy residues from two tartrato (2-) ligands (with one bridging), an asymmetric bidentate carboxylato (O,O') group, and a water. The Bi-O range is 2.372(7)-2.738(6) � [mean 2.509(6) >� ]. The resultant structure is a linear polymer which is stabilized by extensive hydrogen-bonding interactions.

Pigments of Fungi. XLVII. Cardinalic Acid, a New Anthraquinone Carboxylic Acid from the New Zealand Toadstool Dermocybe cardinalis and the Synthesis and X-Ray Crystal Structure of Methyl 1,7,8-Tri-O-methylcardinalate

1998 ◽  
Vol 51 (3) ◽  
pp. 213 ◽  
Author(s):  
Melvyn Gill ◽  
Peter M. Morgan ◽  
Jin Yu ◽  
Jonathan M. White
Keyword(s):  
Crystal Structure ◽  
New Zealand ◽  
Carboxylic Acid ◽  
Single Crystal ◽  
Natural Product ◽  
Carboxylic Acids ◽  
Structure Analysis ◽  
Diels Alder ◽  
Cycloaddition Reactions ◽  
X Ray

Cardinalic acid (1,7,8-trihydroxy-6-methoxy-3-methyl-9,10-dioxoanthracene-2-carboxylic acid) (4) and the known anthraquinone carboxylic acids endocrocin (1), dermolutein (2) and cinnalutein (3) have been isolated from the New Zealand toadstool Dermocybe cardinalis. Methyl 1,7,8-tri-O-methylcardinalate (5) has been prepared both by permethylation of the natural product (4) and from 2,6-dichloro-1,4-benzoquinone by two consecutive regioselective Diels–Alder cycloaddition reactions. A single-crystal X-ray structure analysis of the ester (5) corroborates the structure of the natural product (4) and confirms the outcome of both cycloaddition reactions.

Darstellung und Kristallstruktur einiger Tetracarboxylatoaurate(III) / Preparation and Crystal Structure of Some Tetracarboxylatoaurates(III)

1988 ◽  
Vol 43 (7) ◽  
pp. 807-812 ◽  
Author(s):  
Peter G. Jones ◽  
Ralf Scheibach ◽  
Einhard Schwarzmann ◽  
Carsten Thöne ◽  
Andreas Vielmäder
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Carboxylic Acids ◽  
Propionic Acid ◽  
Zinc Atom ◽  
Zinc Salt ◽  
Metal Hydroxides ◽  
X Ray ◽  
Crystallographic Symmetry ◽  
Strontium Salt

Various salts M(AuX4)2 with X = OCOCH3 or OCOC2H5 have been prepared by two methods: (i) the reaction of metal hydroxides M(OH)2 with HAuCl4, followed by treatment of the intermediate products with acetic or propionic acid, or (ii) the reaction of aurates M{Au(OH)4}2 with the carboxylic acids. The crystal structure of Pb{Au(OCOCH3)4}2·2H2O shows that it is isostructural to the strontium salt, consisting of molecular units Pb{Au(OCOCH3)4}2 with crystallographic symmetry 2. The water of crystallization forms neither coordinate bonds to a metal nor hydrogen bonds. In the analogous zinc salt the water is coordinated to the zinc atom, and the structure is a layer polymer. The two compounds that crystallize in anhydrous form. Ba{Au(OCOCH3)4}2 and Pb{Au(OCOC2H5)4}2, have not yet yielded crystals suitable for X-ray analysis.

Sign in / Sign up

Export Citation Format

Share Document