Novel Cyanide Coordination Models in Layer-Type Hydrated Double Salts of AgCN and AgF

Mak, Thomas C. W.

doi:10.1002/(sici)1521-3773(19981204)37:22<3183::aid-anie3183>3.0.co;2-w

Cited by 68 publications

(7 citation statements)

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“…CV studies of [Ag 60 (Mo 6 O 22 ) 2 (Bu t CC) 38 ](OTf) 6 in aqueous media show no redox signals related to Ag 0 /Ag + couples. 20 Like an electronic relay, the Ag 60 shell transfers electrons to inner 24 The CV diagram displays only the redox signal originated from POMs without redox signals from Ag 0 /Ag + couples.…”

Section: Core−shell Electron Transfermentioning

confidence: 97%

“…27 28 As shown in Figure 10, the templating anion [W 6 It is worth noting that the behavior of POMs is quite different from that of simple anions. Simple anions such as Cl − , CO 3 2− , and SO 4 2− can retain their identities under the reaction conditions, while transformation or decomposition of the POMs frequently happens depending on the reaction conditions applied.…”

Section: Silver Thiolate Clusters With Anion Templatesmentioning

confidence: 99%

“…One-dimensional Ag(I)-dtp polymer [{Ag 5 (dtp) 2 } 4 ] n (PF 6 ) n (dtp = S 2 P(OEt) 2 ) could be converted to octanuclear cationic silver clusters [Ag 8 (X)(dtp) 6 ] + (X = F − or Cl − ) by the use of suitable anions, and the enclosed halide species can be further replaced by hydride upon addition of NaBH 4 . 26 The cluster cation [Ag 8 (F)(dtp) 6 ] + contains a distorted Ag 8 cube (the Ag···Ag edge distances are between 3.043(11) and 3.260(11) Å) with an interstitial fluoride (Figure. 6 ] + has a tetracapped-tetrahedral silver skeleton ( Figure 9b). The Ag 8 cluster is stabilized by six dtp ligands and an interstitial hydride.…”

Section: Silver Thiolate Clusters With Anion Templatesmentioning

confidence: 99%

“…The averaged Ag−μ 4 -H distance, 1.92(4) Å, is longer than the sum of the covalent radii (1.76(5) Å). The Ag− H bond length is much shorter than that of Ag−F or Ag−Cl in [Ag 8 (X)(dtp) 6 ] + (X = F − or Cl − ), causing the deformation of the cubic Ag 8 to a tetracapped tetrahedral configuration.…”

Section: Silver Thiolate Clusters With Anion Templatesmentioning

confidence: 99%

“…The crystal structure is stabilized by electrostatic attractions as well as C−H···O contacts between terminal oxygen atoms of Mo 6 O 19 2− and carbon atoms of the tert-butyl groups. The shortest distance from the methyl carbon of the tert-butyl group to the surface oxygen of Mo 6 , it can interact with Ag62 to form a charge transfer salt. Ag62(Mo 6 O 19 ) 2 is the first example of a charge transfer intercluster crystal.…”

Section: Intercluster Charge Transfermentioning

confidence: 99%

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Role of Anions Associated with the Formation and Properties of Silver Clusters

2015

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Metal clusters have been very attractive due to their aesthetic structures and fascinating properties. Different from nanoparticles, each cluster of a macroscopic sample has a well-defined structure with identical composition, size, and shape. As the disadvantages of polydispersity are ruled out, informative structure-property relationships of metal clusters can be established. The formation of a high-nuclearity metal cluster involves the organization of metal ions into a complex entity in an ordered way. To achieve controllable preparation of metal clusters, it is helpful to introduce a directing agent in the formation process of a cluster. To this end, anion templates have been used to direct the formation of high nuclearity clusters. In this Account, the role of anions played in the formation of a variety of silver clusters has been reviewed. Silver ions are positively charged, so anionic species could be utilized to control the formation of silver clusters on the basis of electrostatic interactions, and the size and shape of the resulted clusters can be dictated by the templating anions. In addition, since the anion is an integral component in the silver clusters described, the physical properties of the clusters can be modulated by functional anions. The templating effects of simple inorganic anions and polyoxometales are shown in silver alkynyl clusters and silver thiolate clusters. Intercluster compounds are also described regarding the importance of anions in determining the packing of the ion pairs and making contribution to electron communications between the positive and negative counterparts. The role of the anions is threefold: (a) an anion is advantageous in stabilizing a cluster via balancing local positive charges of the metal cations; (b) an anion template could help control the size and shape of a cluster product; (c) an anion can be a key factor in influencing the function of a cluster through bringing in its intrinsic properties. Properties including electron communication, luminescent thermochromism, single-molecule magnet, and intercluster charge transfer associated with anion-directed silver clusters have been discussed. We intend to attract chemists' attention to the role that anions could play in determining the structures and properties of metal complexes, especially clusters. We hope that this Account will stimulate more efforts in exploiting new role of anions in various metal cluster systems. Anions can do much more than counterions for charge balance, and they should be considered in the design and synthesis of cluster-based functional materials.

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Section: Core−shell Electron Transfermentioning

confidence: 97%

Section: Silver Thiolate Clusters With Anion Templatesmentioning

confidence: 99%

Section: Silver Thiolate Clusters With Anion Templatesmentioning

confidence: 99%

Section: Silver Thiolate Clusters With Anion Templatesmentioning

confidence: 99%

Section: Intercluster Charge Transfermentioning

confidence: 99%

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Role of Anions Associated with the Formation and Properties of Silver Clusters

2015

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Ein μ-1,1,1,3,3,3-verbrückendes Azidion in einem trigonalen Prisma aus Silberzentren

Mak

1998

Angewandte Chemie

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Silver: Inorganic & Coordination ChemistryBased in part on the article Silver: Inorganic & Coordination Chemistry by W. Ewen Smith which appeared in the Encyclopedia of Inorganic Chemistry, First Edition .

Mak

Zhao

2005

Encyclopedia of Inorganic Chemistry

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The present review is a complete rewrite of the original article in the first edition. The new version provides concise and up‐to‐date information on the inorganic and coordination compounds of silver in oxidation states ranging from subvalent to Ag(IV). Literature coverage is extended to October 2004, and pertinent references are listed for the convenience of the interested reader. The presentation is organized under the following headings: 1. Introduction; 2. Subvalent silver compounds; 3. Silver(I) compounds (under subheadings: 3.1 Halides and pseudohalides; 3.2 Phosphorus donor ligands; 3.3 Nitrogen donor ligands; 3.4 Oxygen donor ligands; 3.5 Chalcogen donor ligands; 3.6 Silver‐rich compounds); 4. Silver(II) compounds; 5. Silver(III) and silver(IV) compounds; 6. Catalysis. The structural features of the compounds are described, and specific examples are illustrated with five figures. For the most important +1 oxidation state of silver, particular emphasis is placed on recent highlights and advances in new areas such as double and multiple salts of silver, silver(I) polyhedra with encapsulated acetylenediide (C 2 2− ) species (symbolized as C 2 @Ag n ), argentophilic Ag(I)⋯Ag(I) interaction in supramolecular assembly, halide‐centered Ag n cages, mixed‐metal clusters, and silver‐rich chalcogenide supercluster complexes. Modern application of inorganic silver catalysts, of both achiral and chiral types, to organic synthesis is presented with selected examples from the recent literature.

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Novel Cyanide Coordination Models in Layer-Type Hydrated Double Salts of AgCN and AgF

Cited by 68 publications

References 5 publications

Role of Anions Associated with the Formation and Properties of Silver Clusters

Role of Anions Associated with the Formation and Properties of Silver Clusters

Ein μ-1,1,1,3,3,3-verbrückendes Azidion in einem trigonalen Prisma aus Silberzentren

Silver: Inorganic & Coordination ChemistryBased in part on the article Silver: Inorganic & Coordination Chemistry by W. Ewen Smith which appeared in the Encyclopedia of Inorganic Chemistry, First Edition .

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