| Crystal Structures of AuCN and AgCN and Vibrational Spectroscopic Studies of AuCN, AgCN, and CuCN. | |
| | |
MedLine Citation:
|
PMID: 11670511 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
The crystal structures of AuCN and AgCN have been determined by powder neutron diffraction measurements. The structure of AuCN consists of rows of linear AuCN chains parallel to [001] with alternating long Au-C = 2.06(2) and short Au-N = 1.82(2) Å. The Au atoms form sheets and are bonded to 6 other Au atoms at a distance of 3.396(2) Å, so that the local environment of each Au atom can be described as a compressed scalehedron. The Au- - -Au distance is within the range expected for an "aurophilic attraction" between these atoms. The AgCN structure is very similar to that for AuCN, in that it consists of rows of AgCN chains with alternating long Ag-C = 2.15(6) and short Ag-N = 1.86(8) Å. The major difference is that the Ag- - -Ag separation within the Ag sheets is noticeably longer, 3.881(5) Å, so that there are no significant Ag- - -Ag interactions. The IR spectra of MCN show nu(CN) at 2170, 2164, 2236; nu(MC,MN) at 591, 480, 598; delta(MCN) at 326, 272, 358; and delta(NMC) = 168, 112, 224 cm(-)(1) for M = Cu, Ag, and Au, respectively. This pattern of band positions strongly suggests that CuCN has the same infinite linear chain structure as AgCN and AuCN. Anomalies in the previously reported IR spectrum of CuCN are shown to be due to the formation of an unusual CuCN/KBr/H(2)O product in KBr disks, which is possibly an intercalation compound involving incorporation of KBr and H(2)O between the chains in the CuCN structure. |
| | |
Authors:
|
Graham A. Bowmaker; Brendan J. Kennedy; Jason C. Reid |
Publication Detail:
|
Type: JOURNAL ARTICLE |
Journal Detail:
|
Title: Inorganic chemistry Volume: 37 ISSN: 1520-510X ISO Abbreviation: Inorg Chem Publication Date: 1998 Aug |
Date Detail:
|
Created Date: 2001-Oct-23 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0366543 Medline TA: Inorg Chem Country: - |
Other Details:
|
Languages: ENG Pagination: 3968-3974 Citation Subset: - |
Affiliation:
|
Department of Chemistry, University of Auckland, Private Bag 92019, Auckland, New Zealand, and School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: GG versus AG Platination: A Kinetic Study on Hairpin-Stabilized Duplex Oligonucleotides.
Next Document: Oxidation of Complexes by (O(2)CPh)(2) and (ER)(2) (E = S, Se), Including Structures of Pd(CH(2)CH(2...