Nouvel affinement de la structure cristalline du bis(pyridine-2 carboxylato)cuivre(II) hydraté

Faure, R.; Loiseleur, H.; Thomas-David, G.

doi:10.1107/s0567740873005716

Cited by 38 publications

(10 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Section: Commentmentioning

confidence: 98%

“…Also, a number of simple structures involving common transition metals and often mixed-ligand systems appear both in earlier and current literature, e.g. bis (pyridine-2-carboxylato-N,O )copper(II) monohydrate (Faure, Loiseleur & Thomas-David, 1973) andThe structures of both picolinic acid (Takusagawa & Shimada, 1973) and its anhydrous hydrochloride (Laurent, 1965) have been determined. In an attempted preparation of an antimony(III) complex with picolinic acid, analogous to the trimethyl-and triphenylantimony(HI) complexes with picolinic acid (Domagala, Huber & Preut, 1990), a white crystalline solid was isolated, which was subsequently identified as a hydrated polymorph of picolinic acid hydrochloride, (I).…”

mentioning

confidence: 99%

See 1 more Smart Citation

2-Carboxypyridinium Chloride Monohydrate

Smith¹,

Byriel²,

Kennard³

1995

Acta Crystallogr C

View full text Add to dashboard Cite

The structure of the monohydrated polymorph of picolinic acid hydrochloride, C6H6NO~.C1-.H20, has been determined and the role of the lattice water in the hydrogen bonding to the chloride ion considered. In the anhydrous complex of the same compound, an interaction between the chloride and the pyridinium proton is found [C1... CommentPicolinic acid (pyridine-2-carboxylic acid) is of considerable interest, particularly to coordination chemists, as it possesses a potentially uninegative bidentate (N,O) donor system with the ability to stabilize complexes through the formation of six-membered chelate tings about metal centres. In addition, the chelate complex formed is often neutral, enabling 'capture' of unstable oxidation states in metals, e.g. with tris(pyridine-2-carboxylato-N,O)manganese(III) monohydrate (Figgis, Raston, Sharma & White, 1978), and dibromo (pyridine-2-carboxylato-N,O)gold(III) (Dar et al., 1992). Also, a number of simple structures involving common transition metals and often mixed-ligand systems appear both in earlier and current literature, e.g. bis (pyridine-2-carboxylato-N,O )copper(II) monohydrate (Faure, Loiseleur & Thomas-David, 1973) andThe structures of both picolinic acid (Takusagawa & Shimada, 1973) and its anhydrous hydrochloride (Laurent, 1965) have been determined. In an attempted preparation of an antimony(III) complex with picolinic acid, analogous to the trimethyl-and triphenylantimony(HI) complexes with picolinic acid (Domagala, Huber & Preut, 1990), a white crystalline solid was isolated, which was subsequently identified as a hydrated polymorph of picolinic acid hydrochloride, (I). Since this compound had not previously been reported in the literature, its structure was determined and is reported here. H•+ COOH (I).CI-.H20The planar 2-carboxypyridinium cation is conformationally similar to the anhydride (Laurent, 1965) ExperimentalThe title compound was isolated as a byproduct from the reaction mixture obtained after refluxing a 1:3 molar ratio of antimony(III) chloride and pyridine-2-carboxylic acid (picolinic acid) in water. Colourless prisms formed upon partial evaporation of the solution at room temperature. The structure was solved by direct methods using SHELXS86 (Sheldrick, 1985) and refined by full-matrix least squares (SHELXL93; Sheldrick, 1993) with anisotropic displacement parameters for all non-H atoms. H atoms were located by difference methods and included with both positional and displacement parameters refined. Other programs used wereXtal3.2 (Hall, Flack & Stewart, 1992) and PLATON (Spek, 1990).The authors acknowledge financial assistance from the Australian Research Council, the University of Queensland and the Centre for Instrumental and Developmental Chemistry of the Queensland University of Technology.Lists of structure factors, anisotropic displacement parameters and H-atom coordinates have been deposited with the IUCr (Reference: AS1154). Copies may be obtained through The Managing Editor, International Union of Crystallography, 5 Abbey Sq...

show abstract

Section: Commentmentioning

confidence: 98%

mentioning

confidence: 99%

2-Carboxypyridinium Chloride Monohydrate

Smith¹,

Byriel²,

Kennard³

1995

Acta Crystallogr C

View full text Add to dashboard Cite

show abstract

“…nation environment consists of three cubane-forming µ 3 -alkoxido O atoms from three 3.31011 (py) 2 [137] and {[Cu(pic) 2 ]·2H 2 O} n (142), [137,138] respectively, where pic -is the picolinato ligand (Scheme 19); the pic -ligand is a degradation product of (py)COCO(py). Complex 141 is mononuclear with the pairs of aqua ligands, carboxylate O donors, and 2-pyridyl N donors in cis, cis, and trans positions, respectively; the pic -ion behaves as a 1.101 ligand (Scheme 21).…”

Section: The X-co-co-x Family Of Ligands: An Unexplored Area In Coordmentioning

confidence: 99%

Adventures in the Coordination Chemistry of Di‐2‐pyridyl Ketone and Related Ligands: From High‐Spin Molecules and Single‐Molecule Magnets to Coordination Polymers, and from Structural Aesthetics to an Exciting New Reactivity Chemistry of Coordinated Ligands

et al. 2009

View full text Add to dashboard Cite

The coordination chemistry of di-2-pyridyl ketone and related ligands is reviewed. An outline of the variety of such ligands is presented. References are given to methods for the synthesis of ligands that are not available on the market. The activation of the carbonyl group(s) of some of the ligands towards further reactions seems to be an emergent area of synthetic inorganic chemistry. The coordination chemistry of each ligand with metals is briefly described. Emphasis is placed on structural features and physical properties (mainly magnetic) of the resulting metal clusters and coordination polymers. The structural diversity of the complexes stems from the ability of the deprotonated diol-or hemiketal-type Organization of This Microreview and General InformationThis Microreview presents a focused overview of the coordination chemistry of ligands with the general formulae X-CO-X, X-CO-Y, X-CO-CO-X, and X-CO-X-CO-X, where X and Y are donor groups. We mainly describe the polynuclear metal complexes (clusters) and coordination polymers that have derived from the use of these ligands and the organic chemistry of their metal complexes. From the viewpoint of properties, emphasis is placed on the magnetism of the metal complexes. Much of the chemistry, both published and unpublished, that is reported comes from our group; however, detailed reference to all appropriate work by others is provided. The Microreview aims not to be comprehensive in terms of a discussion of every known cluster or coordination polymer containing a ligand derived from the above-mentioned molecules; rather, it aims to provide [ ‡] ligands to adopt a variety of bridging coordination modes depending on the number of carbonyl groups, the nature of the extra donor groups in the molecule and on the reaction conditions. Employment of a second organic or inorganic ligand in this chemistry gives an extraordinary structural flexibility in the resulting mixed-ligand systems. The initial use of 1,1Ј-carbonyldiimidazole and 1,1Ј-oxalyldiimidazole in copper(II) chemistry, which leads to unprecedented coordination polymers containing alcoholysis and/or hydrolysis "fragments" of the ligands, is also illustrated.(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009) the reader with some idea of the range of chemistry that has been carried out (and indeed remains still to do) with these ligands. The article contains eight sections, including this one. The next section is introductory: the reader can find brief, general information on the two classes of compounds that are frequently mentioned in this Microreview, namely metal clusters and polymers, as well as a short discussion of the organic chemistry of metal complexes, which is currently a popular topic in inorganic chemistry. The last part of Section 2 provides a "hors d'oeuvre" of the ligands that are discussed in detail in Sections 3-7. Section 8 provides initial conclusions and perspectives for future research. Sections 2 and 3 are divided into parts for clarity. The organization of this ...

show abstract

“…Superimposed layers are only held together by van der Waals forces, and the cleavage of the crystal was found along the (100) plane. The arrangement of the complex and water molecules is very similar to that in bis(picolinato)copper(II) dihydrate (Takenaka, Utsumi, Yamamoto, Furusaki & Nitta, 1970;Faure, Loiseleur & Thomas-David, 1973). …”

Section: Introductionmentioning

confidence: 51%