Gold, Silver and Palladium Complexes with the 2,2′‐Dipyridylamine Ligand

Burgos, Mercedes; Crespo, Olga; Gimeno, M. Concepción; Jones, Peter G.; Laguna, Antonio

doi:10.1002/ejic.200200666

Cited by 22 publications

(9 citation statements)

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“…Although less prevalent throughout organometallic chemistry than HMDS, 49 amido DPA has been utilised in a number of varied branches of chemistry 50 including materials science, 51 catalysis, 52 supramolecular chemistry 53 and even in cooperative bimetallic chemistry. 54 Being the simplest of the DPA through three N sites; one central amido N and two neutral pyridyl N atoms.…”

Section: Introductionmentioning

confidence: 99%

Synthetic, structural and magnetic implications of introducing 2,2′-dipyridylamide to sodium-ferrate complexes

et al. 2017

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This version is available at https://strathprints.strath.ac.uk/60604/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. Using a transamination approach to access novel Fe(II) complexes, this study presents the synthesis, X-ray crystallographic and magnetic characterisation of a series of new iron complexes containing the multifunctional 2,2-dipyridylamide (DPA) ligand using iron bis(amide) [{Fe(HMDS)2}2] and sodium ferrate [{NaFe(HMDS)3} ] (1) as precursors (HMDS = 1,1,1,3,3,3hexamethyldisilazide). Reactions of DPA(H) with 1 show exceptionally good stoichiometric control, allowing access to heteroleptic [(THF)2·NaFe(DPA)(HMDS)2] (3) and homoleptic [{THF·NaFe(DPA)3} ] (4) by using 1 and 3 equivalents of DPA(H) respectively. Linking this methodology and co-complexation, which is a more widely used approach to prepare heterobimetallic complexes, 3 can also be prepared by combining NaHMDS with heteroleptic [{Fe(DPA)(HMDS)}2] (2). In turn, 2 has been also synthesised and structurally defined by reacting [{Fe(HMDS)2}2] with two equivalents of DPA(H). Structural studies demonstrate the coordination flexibility of the N-bridged bis(heterocycle) ligand DPA, with 2 and 3 exhibiting discrete monomeric motifs, whereas 4 displays a much more intricate supramolecular structure, with one of its DPA ligands coordinating in an anti/anti fashion (as opposed to 2 and 3 where DPA shows a syn/syn conformation), which facilitates propagation of the structure via its central amido N. Magnetic studies confirmed the high-spin electron configuration of the iron(II) centres in all three compounds and revealed the existence of weak ferromagnetic interactions in dinuclear compound 2 (J = 1.01 cm -1 ). Journal Name ARTICLE

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Section: Introductionmentioning

confidence: 99%

Synthetic, structural and magnetic implications of introducing 2,2′-dipyridylamide to sodium-ferrate complexes

et al. 2017

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“…Under other reaction conditions, neutral dpa has also been shown to form discrete complexes with silver. 14 In each of these latter systems the secondary amine nitrogen does not coordinate to silver and each dpa unit acts as a bidentate ligand, coordinating through both pyridyl nitrogens to form a six-membered chelate ring. Coordination to silver solely through pyridyl nitrogen donors is also typical of other substituted dpa ligands.…”

Section: Introductionmentioning

confidence: 99%

Assembly of a trinuclear metallo-capsule from a tripodal tris(β-diketone) derivative and copper(ii)

et al. 2008

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Synthesis of the 2,2 -dipyridylamine derivatives di-2-pyridylaminomethylbenzene 1, 1,2-bis(di-2-pyridylaminomethyl)benzene 2, 1,3-bis(di-2-pyridylaminomethyl)benzene 3, 2,6-bis(di-2-pyridylaminomethyl)pyridine 4, 1,4-bis(di-2-pyridylaminomethyl)benzene 5, and 1,3,5-tris(di-2-pyridylaminomethyl)benzene 6 are reported together with the single-crystal X-ray structures of 2, 3, and 5. Reaction of individual salts of the type AgX (where X = NO 3 − , PF 6 − , ClO 4 − , or BF 4 − ) with the above ligands has led to the isolation of thirteen Ag(I) complexes, nine of which have also been characterised by X-ray diffraction. In part, the inherent flexibility of the respective ligands has resulted in the adoption of a range of coordination arrangements. A series of liquid-liquid (H 2 O/CHCl 3 ) extraction experiments of Ag(I) with varying concentrations of 1-6 in the organic phase have been undertaken, with the counter ion in the aqueous phase being respectively picrate, perchlorate and nitrate. In general, extraction efficiencies for a given ionophore followed the Hofmeister order of picrate > perchlorate > nitrate; in each case the tris-dpa derivative 6 acting as the most efficient extractant of the six systems investigated. Competitive seven-metal bulk membrane transport experiments (H 2 O/CHCl 3 /H 2 O) employing the above ligands as the ionophore in the organic phase and equimolar concentrations of Co(II), Ni(II), Zn(II), Cu(II), Cd(II), Pb(II) and Ag(I) in the aqueous source phase were also undertaken, with transport occurring against a pH gradient. Under the conditions employed 1 and 5 yielded negligible transport of any of the metals present in the source phase while sole transport selectivity for Ag(I) was observed for 2-4 and 6.

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“…The title complex was synthesized as described by Burgos et al (2003) and recrystallized from dichloromethane/pentane.…”

Section: Methodsmentioning

confidence: 99%

“…We are interested in complexes of the ligand di-2-pyridylamine (DPA), and have reported some of its complexes with silver, gold and palladium, together with the structure of [Ag(DPA)(PPh 3 )](OTf) (OTf is tri¯uoromethanesulfonate; Burgos et al, 2003). This displays, to a ®rst approximation, three-coordinate silver, the donor atoms being the P atom (of PPh 3 ) and both pyridine N atoms of the same DPA ligand.…”

Section: Commentmentioning

confidence: 99%

catena-Poly[[(trifluoromethanesulfonato-κO)silver(I)]-μ-di-2-pyridylamine-κ²N²:N^2′], a chain polymer with short Ag...C contacts

et al. 2006

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The title compound, [Ag(CF3O3S)(C10H9N3)]n, is a chain polymer in which neighbouring monomeric units are related by a glide plane. The silver centre is four-coordinate; the donor atoms are one trifluoromethanesulfonate O atom and one pyridine N atom from each of two symmetry-related dipyridylamines, and an additional and unexpected Ag...C contact [2.6464 (16) A] is observed to a pyridine C atom. The chains are reinforced by one classical N-H...O and two 'weak' C-H...O hydrogen bonds.

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Gold, Silver and Palladium Complexes with the 2,2′‐Dipyridylamine Ligand

Cited by 22 publications

References 52 publications

Synthetic, structural and magnetic implications of introducing 2,2′-dipyridylamide to sodium-ferrate complexes

Synthetic, structural and magnetic implications of introducing 2,2′-dipyridylamide to sodium-ferrate complexes

Assembly of a trinuclear metallo-capsule from a tripodal tris(β-diketone) derivative and copper(ii)

catena-Poly[[(trifluoromethanesulfonato-κO)silver(I)]-μ-di-2-pyridylamine-κ²N²:N^2′], a chain polymer with short Ag...C contacts

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Gold, Silver and Palladium Complexes with the 2,2′‐Dipyridylamine Ligand

Cited by 22 publications

References 52 publications

Synthetic, structural and magnetic implications of introducing 2,2′-dipyridylamide to sodium-ferrate complexes

Synthetic, structural and magnetic implications of introducing 2,2′-dipyridylamide to sodium-ferrate complexes

Assembly of a trinuclear metallo-capsule from a tripodal tris(β-diketone) derivative and copper(ii)

catena-Poly[[(trifluoromethanesulfonato-κO)silver(I)]-μ-di-2-pyridylamine-κ2N2:N2′], a chain polymer with short Ag...C contacts

Contact Info

Product

Resources

About

catena-Poly[[(trifluoromethanesulfonato-κO)silver(I)]-μ-di-2-pyridylamine-κ²N²:N^2′], a chain polymer with short Ag...C contacts