First synthesis, characterization, and x-ray structural determination of the macrocyclic phosphineamine complex [Ni(Me2[16]dieneN2P2)](PF6)2.0.5H2O

Abstract

Der als Semihydrat isolierte, planare Titelkomplex (III) entsteht bei der Umsetzung der linearen, sechszähnigen Schiffschen Base (II) mit NKIDI‐acetattetrahydrat in siedendem Methanol bei nachfolgender Behandlung mit wäßriger Essigsäure und NaPFö‐Zugabe.

Kappa what? Insights into the coordination modes of N2P2 ligands

“…This common coordination and binding mode was also observed in Co(II) and Ni(II) complexes (3) even though the backbone fused the two phosphorus atoms instead of the imines. 8,9 With the complete closure of the ligand to form the first N 2 P 2 macrocycle, a Ni(II) complex ( 4) was isolated and revealed to be square planar. 10 While the κ 4 -binding mode remained unchanged in the tetrahedral Cu(I) complexes (5) with different R groups on the phosphine donors, the potential of the Cu(II/I) couple was dramatically impacted by the R group.…”