NDLI: Syntheses, structures and spectroscopy of uni- and bi-dentate nitrogen base complexes of silver( I) trifluoromethanesulfonate

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Marchetti, Fabio Robinson, Ward T. Nervi, Carlo White, Allan H. Pettinari, Claudio Di Nicola, Corrado Sobolev, Alexandre N.
Description	Author Affiliation: Di Nicola C ( Dip. di Scienze Chimiche, Università di Camerino, Via S. Agostino, 1, I-62032, Camerino, (MC), Italy.)
Abstract	In extension of recent synthetic and crystallographic studies of adducts of silver( I) oxyanion salts with uni- and bi-dentate nitrogen -donor ligands, AgX : L (1 : n), a parallel series of complexes formed with silver( I) trifluoromethanesulfonate (‘tfs’, ‘ triflate ’) has been similarly defined, showing rather more divergence from tendencies established with the previous $ClO_{4},$ $NO_{3},$ $F_{3}CCO_{2}$ core arrays than might be expected from basicity arguments. Thus, while silver triflate crystallised from neat base forms 1 : 2 mononuclear adducts with 2,4,6-trimethylpyridine and quinoline which comprise essentially linear two-coordinate [LAgL] $^{+}$ cations, perturbed by approaches of the anions, 1 : 2 adducts obtained similarly from pyridine and 2-methylpyridine are $[L_{2}Ag(μ-tfs)_{2}AgL_{2}]$ dimers, with central four- and eight-membered rings arising from $μ-OSO_{2}CF_{3}$ and extended $μ-(O,O′SOCF_{3})$ anion bridging modes, respectively. With piperidine , a single-stranded polymer reminiscent of the arrays [(pip) $_{2}AgX]$ $_{∞\|∞}$ , X = Cl , NCS, is formed, the triflate bridging through two of its oxygen atoms, rather than via a single atom bridge. With 2- and 4-cyanopyridine , the former a 1 : 1 adduct (being an acetonitrile solvate ( MeCN coordinated)), and the latter 1 : 2, both are more complex structures in which the nitrile functionalities now coordinate weakly. The 1 : 2 adduct with 2-acetylpyridine parallels its perchlorate analogue, the ligands being bidentate in a mononuclear complex $[L_{2}AgOSO_{2}CF_{3}],$ while adducts of 2,9-dimethylphenanthroline and 2,2′-biquinolyl , both acetonitrile monosolvates, take the form [LAg(NCMe)]tfs. Agtfs : dpk (8 : 8) $_{∞\|∞}·EtOH$ (‘dpk’ = bis(2-pyridyl)ketone ) is a complex polymer . The nature of the interactions is explored by way of spectroscopy ( IR , NMR and ESI MS ) and a density functional theory approach.
ISSN	14779226
Issue Number	3
Volume Number	39
e-ISSN	13645447
Journal	Dalton Trans.
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2010-01-21
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Mesylates Chemistry Chemical Synthesis Nitrogen Models, Molecular Molecular Conformation Quantum Theory Spectrum Analysis Journal Article Research Support, Non-U.S. Gov't
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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