Copper(I) carboxylates: preparations and infrared and mass spectral features

Abstract

Procedures for the high-yield preparations of a range of copper(1) carboxylates, Cu0,CR (R = H, Me, CH2CI, CHCI,, CF,, CH,CN. CH,SH, Et, Pr9 Ph, o-N02*C6H,, CH=CHPh, and CH=CH-C02H) are reported. The i.r. spectra of these compounds are briefly discussed. The mass spectra of a selection of the copper( I) carboxylates show the presence of dimeric ions in high abundance in the vapour, together with very low abundances of trimeric and tetrameric ions. The alkanecarboxylates initially lose RCO,' from the radical ion Cu,(O,CR),+*, whereas the arenecarboxylates also easily lose C 0 2 from this radical ion leading to the formation of many ions containing Cu-C bonds. The monochloroacetate and o-nitrobenzoate also fragment to give ions possessing Cu-CI and CU-NO, bonds respectively.

Kupferchalkogenid‐Clusterverbindungen mit Brom‐funktionalisierter Ligandenhülle

“…CuOAc [19] und Se(SiMe 3 ) 2 [20] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 stäbchenförmige Kristalle von 2·6DME. Ausbeute: 453 mg (7,1·10 −2 mmol, 60 % bezogen auf CuOAc).…”

Synthesis and Structure of [nPr3N(CH2)6NnPr3][CuFe3Br3(SePh)6], [Cu5Fe(SePh)7(PPh3)4] and [Cu4Fe3(SePh)10(PPh3)4]

“…CuCl was washed with HCl, CH 3 OH, and diethyl ether to remove traces of CuCl 2 , and then dried under vac-uum. CuOOCCH 3 [20] and PhSeSiMe 3 [21] were prepared according to literature procedures.…”

New Copper Chalcogenide Clusters with a Selenide Core and a Sulfide Shell

“…Solvents were dried with sodium/benzophenone and freshly distilled. Copper(i) acetate (CuOAc), [16] Se(SiMe 3 ) 2 , [17] and PhSSiMe 3 [18] were synthesized according to literature procedures. All reactions described below are very sensitive to small variations of the starting material ratio such that in some cases mixtures of different compounds were obtained.…”