Helices versus Zigzag Chains:  One-Dimensional Coordination Polymers of Ag<sup>I</sup>and Bis(4-pyridyl)amine

Cordes, David B.; Hanton, Lyall R.; Spicer, Mark D.

doi:10.1021/ic060487y

Cited by 55 publications

(26 citation statements)

References 75 publications

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“…In Figure 4 we show two examples of crystal structures retrieved from the CSD (codes IMUYEU [8d] and EQOYIS [20] ) in which the anion-p interaction is evident and play a prominent role in the crystal packing. Further experimental evidence can be extracted from the recent and elegant work of Hanton and coworkers [9,21] who performed an encapsulation of anions by a uniform mode of anion-p binding in isomorphous (4,4) nets formed from Ag I salts and bis(4-pyrimidylmethyl)sulfide. In summary, the results derived from the high-level ab initio calculations reported herein reveal that the anion binding properties of pyridine (1) and pyrazine (2) change when they are coordinated to silver(I), compounds 3 and 4 respectively.…”

Section: Compoundmentioning

confidence: 99%

High‐Level Ab Initio Study of Anion–π Interactions in Pyridine and Pyrazine Rings Coordinated to Ag^I

2008

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Section: Compoundmentioning

confidence: 99%

High‐Level Ab Initio Study of Anion–π Interactions in Pyridine and Pyrazine Rings Coordinated to Ag^I

2008

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“…There is also an Ag-Ag interaction [Ag1-Ag1 ii = 3.2883 (10) Å ; Fig. 2b], which is longer than that reported for the silver complex {[Ag(bpa)]PF 6 ÁMeCN} n [Ag-Ag = 3.2669 (5) Å , where bpa is bis(pyridin-4-yl)amine; Cordes et al, 2006], but shorter than that found in [Ag(dpa)], where Hdpa is 4,4 0 -dipyridylamine (Ag-Ag = 3.788 Å ; Rarig & Zubieta, 2002). The Ag-Ag interaction means that there is a seesaw coordination environment around each Ag atom.…”

Section: Resultsmentioning

confidence: 81%

A new ladder-type silver(I) coordination polymer with 4,4′-bipyridine and 4-[(4-carboxybenzyloxy)methyl]benzoate ligands: synthesis, crystal structure, fluorescence properties and Hirshfeld surface analysis

Chen

Zhang

et al. 2020

Acta Crystallogr C

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A novel ladder-type coordination polymer (CP), poly[(μ-4,4′-bipyridine-κ2 N:N′){μ-4-[(4-carboxybenzyloxy)methyl]benzoato-κO}silver(I)](Ag—Ag), [Ag(C16H13O5)(C10H8N2)] n or [Ag(HL)(4,4′-bpy)] n {H2 L is 4,4′-[oxybis(methylene)]dibenzoic acid and 4,4′-bpy is 4,4′-bipyridine}, was synthesized using hydrothermal methods. The complex was characterized by IR spectroscopy, elemental analysis and single-crystal X-ray diffraction, and is a ladder-type CP which exhibits an obvious Ag—Ag interaction. The legs of the ladder are formed by parallel 4,4′-bipy ligands and silver ions, and the rungs are constructed by Ag—Ag interactions. A Hirshfeld surface analysis was carried out and is discussed in detail. The complex also displays favourable fluorescence properties.

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“…The two rings of the chelating ligand are almost coplanar (angle between meanplanes = 1. [24][25][26][27][28][29][30][31], we reacted 1 with silver nitrate. This furnished a crystalline product (5) in 69% yield [32].…”

Section: Here]mentioning

confidence: 99%

The first metal complexes of 3,3′-bi-1,2,4-oxadiazole: A curiously ignored ligand

Richardson

Steel

2007

Inorganic Chemistry Communications

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The crystal structure of 3,3'-bi-1,2,4-oxadiazole (1) reveals a planar centrosymmetric structure for this molecule in the solid state. It forms a mononuclear complex (3) with palladium(II) chloride, which is shown by X-ray crystallography to contain the ligand chelated through the two N4 nitrogens. The X-ray structure of the complex (5) with silver(I) nitrate shows a one-dimensional coordination polymer in which the ligand acts in a bridging mode, again with coordination through the N4 nitrogen atoms.Keywords: 1,2,4-Oxadiazole; Palladium; Silver; N Ligands [11,12]. Within this context, we noted that 1,2,4-oxadiazoles have been curiously ignored as subcomponents within ligands, be they monodentate, chelating or bridging. Indeed, a search of the Cambridge Crystallographic Database revealed that only three papers reported metal complexes of ligands containing a 1,2,4-oxadiazole subunit [13][14][15].In continuation of our interest in the chemistry of biheterocycles [16], we realised that of the three isomeric bi-1,2,4-oxadiazoles, the 3,3'-isomer (1) represents a particularly interesting potential ligand. This compound has been known for over forty years [17] and could potentially chelate to a single metal in any of three modes (Fig. 1, (a)-(c)) and, furthermore, offers the possibility of bridging two metals in either of two ways ( Fig.1, (d)-(e)). Curiously however, it has never been used as a ligand in coordination or metallosupramolecular chemistry. We therefore set out to explore the use of this compound as a ligand and herein describe the synthesis and X-ray crystal structures of the free ligand, a mononuclear palladium(II) complex and a one-dimensional silver(I) coordination polymer.[ Fig. 1 here] 3,3'-Bi-1,2,4-oxadiazole (1) was prepared in 76% yield by a double cyclisation of oxamidoxime (Scheme 1), based on a literature procedure [18]. In order to confirm unambiguously its structure and to examine the conformation of the ligand in the solid state we determined the X-ray crystal structure of 1 [19]. It crystallises in the orthorhombic space group Cmca with a mere quarter of the molecule in the asymmetric unit; the whole molecule lies on a crystallographic mirror plane and also resides upon a crystallographic centre of inversion (Fig. 2). As such the molecule is perfectly planar and centrosymmetric, a situation that we have previously proposed to be favoured for symmetrical biheterocycles for the 3 reason that this eliminates any dipole moment and facilitates maximal π-π stacking of the molecules in the solid state [20].[Scheme 1 and Fig. 2 here] We next proceeded to explore the coordination chemistry of 1 by preparing a mononuclear complex. We chose palladium(II) as the metal, based on a long standing affection for this well-behaved, square-planar metal synthon [21]. Our first attempt to prepare a palladium complex of 1 involved reaction with PdCl 2 in 2M HCl solution. This reaction furnished crystals of a product that we were able to identify as the ring-opened hydrolysis derivative 2 (Scheme 1), o...

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Helices versus Zigzag Chains: One-Dimensional Coordination Polymers of Ag^Iand Bis(4-pyridyl)amine

Cited by 55 publications

References 75 publications

High‐Level Ab Initio Study of Anion–π Interactions in Pyridine and Pyrazine Rings Coordinated to Ag^I

High‐Level Ab Initio Study of Anion–π Interactions in Pyridine and Pyrazine Rings Coordinated to Ag^I

A new ladder-type silver(I) coordination polymer with 4,4′-bipyridine and 4-[(4-carboxybenzyloxy)methyl]benzoate ligands: synthesis, crystal structure, fluorescence properties and Hirshfeld surface analysis

The first metal complexes of 3,3′-bi-1,2,4-oxadiazole: A curiously ignored ligand

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Helices versus Zigzag Chains: One-Dimensional Coordination Polymers of AgIand Bis(4-pyridyl)amine

Cited by 55 publications

References 75 publications

High‐Level Ab Initio Study of Anion–π Interactions in Pyridine and Pyrazine Rings Coordinated to AgI

High‐Level Ab Initio Study of Anion–π Interactions in Pyridine and Pyrazine Rings Coordinated to AgI

A new ladder-type silver(I) coordination polymer with 4,4′-bipyridine and 4-[(4-carboxybenzyloxy)methyl]benzoate ligands: synthesis, crystal structure, fluorescence properties and Hirshfeld surface analysis

The first metal complexes of 3,3′-bi-1,2,4-oxadiazole: A curiously ignored ligand

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Helices versus Zigzag Chains: One-Dimensional Coordination Polymers of Ag^Iand Bis(4-pyridyl)amine

High‐Level Ab Initio Study of Anion–π Interactions in Pyridine and Pyrazine Rings Coordinated to Ag^I

High‐Level Ab Initio Study of Anion–π Interactions in Pyridine and Pyrazine Rings Coordinated to Ag^I