yield Δ/Λ-chiral four-coordinated, non-planar Cu(N^O)2 complexes [Ar = C6H5R/S-L1, m-C6H4OMe R-L2, p-C6H4OMe R/S-L3, and p-C6H4Br R/S-L4]. Two N,O-chelate ligands coordinate to the copper(II) atom in distorted square-planar mode, and induce metal-centered Δ/Λ-chirality at the copper atom in the C2-symmetric complexes. In the solid state, the R-L1 (or R-L4) ligand chirality diastereoselectively induces a
对映体纯二齿席夫碱
配体,(- [R或小号) - ñ -1-(AR)乙基-2-氧代-1- naphthaldiminato-κ 2 Ñ,ø,非对映选择性得到Δ/Λ手性四配位的,非平面的Cu (N ^ O)2个络合物[Ar = C 6 H 5 R / S -L1,m -C 6 H 4 OMe R -
L2,p -C 6 H 4 OMe R / S -L3和p-C 6 H 4 Br R / S -L4 ]。两个N,O-螯合物
配体以扭曲的方形平面模式与
铜(II)原子配位,并在C 2对称配合物中的
铜原子上诱导
金属中心的Δ/Λ-手性。在固态下,R -L1(或R -L4)
配体手性非对映选择性地诱导Λ-Cu - R -L1(或Λ-Cu- R -L4)中的Λ-Cu构型,S -L1
配体aΔ -Δ-Cu-中的-Cu构型S -L1,在结晶时形成对映体纯的晶体。相反地, - [R -
L2配体结合了Λ/Δ-CU- ř