Benzophenoneimine Complexes of Copper(I)

Wolfgang Schneider, Andreas Bauer, Hubert Schmidbaur

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9 Scopus citations


The reactions of [(MeCN)4Cu]BF4 with two or three equivalents of benzophenoneimine lead to the formation of [(Ph2C= NH)2Cu]BR, (1) and [(Ph2C=NH)3Cu]BF4 (2), respectively. A further equivalent of the ligand does not coordinate to the cation of complex 2. The crystal structures of both compounds were determined. 1 shows a linearly two-coordinated copper(I) center with a Cu-N distance of 1.877(2) Å. In compound 2 a distorted trigonal planar coordination of copper is observed with N-Cu-N angles of 114.5(2), 112.9(2) and 132.4(2)°, corresponding to two nearly ecrual Cu-N distances [Cu-N2 1.947(5) and Cu-N3 1.934(5) Å] and a significantly longer third one [Cu-Nl 2.011(5) Å]. A comparison of these data with recently determined structures of bis(benzophenoneimine)silver(I) and -gold(I) complexes shows that the covalent radii of the monovalent coinage metals decrease in the order Ag(I) > Au(I) > Cu(I).

Original languageEnglish
Pages (from-to)947-950
Number of pages4
JournalChemische Berichte
Issue number7
StatePublished - 1997
Externally publishedYes


  • (imine)copper(i) complexes
  • Copper
  • Copper(i) complexes
  • Ketimines
  • N ligands


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