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Silver Clusters Stabilized by Fe(Co)4 Ligands

Published online by Cambridge University Press:  15 February 2011

Vincenzo G. Albano ,
Fabrizio Azzaroni ,
Maria Carmela Iapalucci ,
Giuliano Longoni ,
Magda Monari  and
Suzanne Mulley
Vincenzo G. Albano
Affiliation:
Dipartimento di Chimica “G.Ciamician”,via F.Selmi 2, 40126 Bologna, Italy
Fabrizio Azzaroni
Affiliation:
Dipartimento di Chimica Fisica ed Inorganica, viale Risorgimento 4, 40136 Bologna, Italy
Maria Carmela Iapalucci
Affiliation:
Dipartimento di Chimica Fisica ed Inorganica, viale Risorgimento 4, 40136 Bologna, Italy
Giuliano Longoni
Affiliation:
Dipartimento di Chimica Fisica ed Inorganica, viale Risorgimento 4, 40136 Bologna, Italy
Magda Monari
Affiliation:
Dipartimento di Chimica “G.Ciamician”,via F.Selmi 2, 40126 Bologna, Italy
Suzanne Mulley
Affiliation:
Dipartimento di Chimica Fisica ed Inorganica, viale Risorgimento 4, 40136 Bologna, Italy
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Abstract

The reaction of [Fe(CO)4]2− with Ag+ in tetrahydrofuran or acetonitrile solution affords a series of silver clusters stabilized by Fe(CO)4 pseudo-ligands, formally arising from oligomerization of [AgFe(CO)4]− and their subsequent condensation with Ag+/O/−. The [Ag4Fe4(CO)16]4−, [Ag5Fe4(CO)16]3−, and [Ag13Fe8(CO)32]4− anions have been structurally characterized by X ray studies, while the formulation of all the remaining species is presently based on analytical and spectroscopic characterization, as well as their chemical behavior. Attempts to isolate the [Ag6Fe4(CO)16]2− salts in a crystalline state were unsuccessful due to their ready oligomerization to completely insoluble material of [(Ag+)n{[Ag6Fe4(CO)16]2−}n+1](n+2)− composition. This material is depolymerized by dimethylsulfoxide or by addition of stoichiometric amounts of amines and, upon dissolution, gives the [Ag6Fe4(CO)16]2− dianion.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 272: Symposium O – Chemical Processes in Inorganic Materials: Metal and Semiconductor Clusters , 1992 , 115
Copyright
Copyright © Materials Research Society 1992

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References

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