Four novel Cu(Ⅰ) complexes,[Cu(o-PYO)(PPh3)2]BF4(1),[Cu(o-PYO)(DPEphos)]BF4(2),[Cu2 (o-PYO)(PPh3)3(CH3CN)](BF4)2(3) and [Cu2(o-PYO)(DPEphos)2 ](BF4)2(4) (o-PYO=2,5bis(pyridyl)-1,3,4-oxadiazole,PPh 3=triphenylphosphine,DPEphos=bis(2-(diphenylphosphanyl)phenyl)ether),have been synthesized and characterized by 1 H NMR,elemental analysis and single-crystal X-ray diffraction.The central cuprous ions in all complexes are surrounded by N and P atoms to form a distorted tetrahedral geometry,although one of the cuprous ions in complex 3 is coordinated by a PPh3 and an acetonitrile molecule due to the steric hindrance and weak coordination ability from monodentate PPh3 ligand.The UV-vis absorption spectra in CH2Cl2 show the characteristic metal-to-ligand charge transfer (MLCT) absorption bands in the region of 360-480nm.Four Cu(I) complexes exhibit yellow to orange-red phosphorescence with the emission maximum at 572,577,562 and 597nm,respectively in the solid state.
A new wave-like infinite chain coordination polymer [Cu3(CN)3(PPh3)4]n(1,PPh3=triphenylphosphine) has been synthesized by solution reaction and characterized by X-ray single-crystal structure diffraction analysis.The complex crystallizes in space group P1 with a=13.343(6),b=13.429(7),c=20.694(10),α=103.163(4),β=96.704(5),γ=101.981(6)o,V=3479(3)3,Z=2,C75H60Cu3N3P4,Mr=1317.76,Dc=1.258 g/cm3,F(000)=1356,μ=1.043 mm-1,the final R=0.0680 and wR=0.1305 for 9232 observed reflections with I>2σ(I).The infinite chain is linked by C-H…π H bonding interactions to form a 2-D supramolecular network.Luminescent study reveals that the complex has green-light emission.
