Contrasting connectivity of amidine and phosphaamidine (1,3-P,N) Cu(I) complexes

Ramjee Kandel, Keith Huynh, Lauren Dalgliesh, Ruiyao Wang, Philip G. Jessop*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Aprotic acetamidine {Me2N-C(Me)=N(R)(CuBr)}2 {R = iPr (2a), Cy (2b), Ph (2c)} and neutral 1,3-P,N phosphaamidine copper bromide complexes {(CuBr)(Ph2PC(Ph)=NPh)}4 (6a), {(CuBr)4(Ph2PC(Ph)=NiPr)2}·{2CH2Cl2} (6b), (CuBr)4(iPr2PC(Ph)=NPh)2} (7a) and {(CuBr)4(iPr2PC(Ph)=NiPr)2} (7b) are prepared by direct combination of corresponding amidine and phosphaamidine with CuBr(DMS). X-ray crystallographic analysis of the acetamidine complexes reveal monodentate Nimine coordination to copper with significant degree of delocalization about the N-C=N framework and a relatively short Cu-Cu interaction of 2.5758(8) Å in 2c compared to (2.9801)(10) Å 2a. The phosphaamidine ligands are never η1-Nimine bound; instead they are η1-P bound in the cubane complex 6a or η2-bound in the step cluster complexes 6b, 7a and 7b.

Original languageEnglish
Pages (from-to)117-123
Number of pages7
JournalInorganica Chimica Acta
Volume445
DOIs
Publication statusPublished - 24 Apr 2016
Externally publishedYes

Keywords

  • Amidines
  • Copper(I) complexes
  • Hemilabile ligands
  • Phosphaamidines

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