名称:
1,1′-[(Ethane-1,2-diyldioxy)di-o-phenylene]bis(indoline-2,3-dione) (L) and a novel [Ag2L2]2+metallocycle based on coordination-driven Ag—O and Ag—π bonds
摘要:
1,1'-[(Ethane-1,2-diyldioxy)di-o-phenylene]bis(indoline-2,3-dione), C32H24N2O6, L or (I), adopts a trans conformation with the two terminal indoline-2,3-dione groups located on opposite sides of the central ether bridge, as required by a centre of inversion located at the mid-point of the ethane C-C bond. However, in the discrete binuclear AgI metallocycle complex salt bis{mu-1,1'-[(ethane-1,2-diyldioxy)di-o-phenylene]bis(indoline-2,3-dione)}disilver(I) bis(hexafluoridoantimonate), [Ag-2(C32H24N2O6)(2)][SbF6](2), (II), synthesized by combination of L with AgSbF6, L adopts a gauche conformation to bind AgI via the two indolinedione O atoms and two C atoms from the phenoxy ring. One dione O atom from the opposite side of the ether bridge completes the irregular coordination environment of each AgI atom. The complex is on a centre of inversion located between the AgI atoms. In the solid state, these binuclear [Ag-2 L (2)]2+ metallocycles stack together via intermolecular pi-pi interactions to generate a one-dimensional chain motif, with the [SbF6]- counter-ions, which are disordered, located between the chains.