Structure Determination of Homoleptic AuI, AgI, and CuI Aryl/Alkylethynyl Coordination Polymers by X-ray Powder Diffraction

Cu coordination modes. By using this single-crystal structure as a starting model for subsequent Rietveld refinement of X-ray powder diffraction data, the structure of the powder synthesized from CuI and tBuC triple bond CH was found to have the same structure as 1. Complex 2 has an extended sheet structure consisting of discrete zig-zag Cu4 subunits connected through bridging nPrC triple bond C groups. Complex 3 forms an infinite chain structure with extended Cu-Cu ladders (Cu-Cu=2.49(4)-2.83(2) A). The silver(I) congener 4 is iso-structural to 3 (average Ag-Ag distance 3.11 A), whereas the gold(I) analogue 5 forms a Au...Au honeycomb network with PhC triple bond C pillars (Au-Au=2.98(1)-3.26(1) A). Solid-state properties including photoluminescence, nu(C triple bond C) stretching frequencies and thermal stability of these polymeric systems are discussed in the context of the determined structures. -->

ISSN:	1521-3765 0947-6539
DOI:	10.1002/chem.200400881
Přístupová URL adresa:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9840db221ea5a539d0f0f0a6dba2b52a https://doi.org/10.1002/chem.200400881
Rights:	CLOSED
Přírůstkové číslo:	edsair.doi.dedup.....9840db221ea5a539d0f0f0a6dba2b52a
Autor:	Chi-Ming Che, Stephen Sin-Yin Chui, Miro F. Y. Ng
Rok vydání:	2005
Předmět:	Models Molecular Luminescence Silver Photochemistry Polymers Catenane Ligands Sensitivity and Specificity Catalysis chemistry.chemical_compound Spectroscopy Fourier Transform Infrared Organometallic Compounds Thermal stability Homoleptic Acetylene Chemistry Rietveld refinement Aryl Organic Chemistry General Chemistry Triple bond Crystallography X-ray crystallography Gold Copper Powder Diffraction Powder diffraction
Zdroj:	Chemistry - A European Journal. 11:1739-1749
ISSN:	1521-3765 0947-6539
DOI:	10.1002/chem.200400881
Popis:	This article describes the structure determination of five homoleptic d(10) metal-aryl/alkylacetylides [RC triple bond CM] (M=Cu, R=tBu 1, nPr 2, Ph 3; R=Ph, M=Ag 4; Au 5) by using X-ray single-crystal and powder diffraction. Complex 1.C6H6 reveals an unusual Cu20 catenane cluster structure that has various types of tBuC triple bond C-->Cu coordination modes. By using this single-crystal structure as a starting model for subsequent Rietveld refinement of X-ray powder diffraction data, the structure of the powder synthesized from CuI and tBuC triple bond CH was found to have the same structure as 1. Complex 2 has an extended sheet structure consisting of discrete zig-zag Cu4 subunits connected through bridging nPrC triple bond C groups. Complex 3 forms an infinite chain structure with extended Cu-Cu ladders (Cu-Cu=2.49(4)-2.83(2) A). The silver(I) congener 4 is iso-structural to 3 (average Ag-Ag distance 3.11 A), whereas the gold(I) analogue 5 forms a Au...Au honeycomb network with PhC triple bond C pillars (Au-Au=2.98(1)-3.26(1) A). Solid-state properties including photoluminescence, nu(C triple bond C) stretching frequencies and thermal stability of these polymeric systems are discussed in the context of the determined structures.
Databáze:	OpenAIRE
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