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Facile Syntheses of Copper(I) Alkynyl Clusters Stabilized by Hexafluoroacetylacetonate (hfac) Ligands: The Structure of [Cu26(hfac)11(1-pentynyl)15] This work was supported by Avecia, Seiko-Epson Corporation, and EPSRC funding. We would like to thank Stephen Boyer of the Computing and Engineering Department of the University of North London for performing microanalyses. We would also like to thank Dr. Mary McPartlin for a stimulating discussion with regard to interpretation of our crystallographic results.

“…70–71 °C). This reaction has similarities to those reported by Vicente and Chicote42 where protic acids were treated with metal complexes containing acetylacetonate (acac) ligands (M(acac) + BH→MB + (acac)H). The cluster size increases as the ratio of alkynyl to hfac in the complex increases.…”

Facile Syntheses of Copper(I) Alkynyl Clusters Stabilized by Hexafluoroacetylacetonate (hfac) Ligands: The Structure of [Cu26(hfac)11(1-pentynyl)15] This work was supported by Avecia, Seiko-Epson Corporation, and EPSRC funding. We would like to thank Stephen Boyer of the Computing and Engineering Department of the University of North London for performing microanalyses. We would also like to thank Dr. Mary McPartlin for a stimulating discussion with regard to interpretation of our crystallographic results.

“…[38,39] The simplicity of the preparation of these clusters and the range of nuclearities obtained is remarkable. This reaction has similarities to those reported by Vicente and Chicote [42] where protic acids were treated with metal complexes containing acetylacetonate (acac) ligands (M(acac) þ BH!MB þ (acac)H). Control experiments indicate that Cu 2 O does not react directly with aliphatic 1-alkynes in the presence of MgSO 4 , probably as a result of their low acidity (1-hexyne, pK a ¼ 25), [40] whereas more acidic 1-alkynes such as 1-phenylethyne (pK a ¼ 18.5) [41] react quickly to form bright-yellow voluminous solids, which are presumed to contain [{Cu(m x -h y = -C CPh)} n ].…”

2-(Aminomethyl)phenyl Complexes of Au(III), Mixed Au(III)/Ag(I), and Pd(II) with the 2,2-Diacetyl-1,1-Ethylenedithiolato Ligand: Dancing of Palladacycles around a Juggler Ligand

“…The bond distances within the dithiolato fragments are within the intervals found for other 2,2-diacetyl-1,1ethylenedithiolato complexes 5,8,14,17,18,21 and reflect somehow the different contribution of the resonance forms A-C (see Chart 3), depending on the coordination mode of the ligand, the electronegativity of the metal, and the neutral (1, 6b) or charged (7b) nature of the complex. Thus, the C(1)-C(2) bond distances are intermediate between the C(sp 3 )-C(sp 3 ) and C(sp 2 )dC(sp 2 ) typical values, 45 In the absence of X-ray diffraction data we tentatively assign a polymeric structure to 2 in the solid state, although a dimeric chair structure as that found in some silver-palladium or silver-platinum 2,2-diacetyl-1,1ethylenedithiolato complexes cannot be ruled out.…”