3D supramolecular structures. Halogen substituents on ligands and oxyanions in complexes affect the structures of complexes due to differences in the electronegativity, volume and Ag---O strengths. Although fluorine, chlorine and bromine atoms exhibit a similar structural effect and the iodine atom has the opposite effect, the larger ClO4− anion hinders the formation of the argentophilic interaction
所述的非对称反应Ñ(4-卤代苯基) - - ñ '-cyanoformamidine(L-X,X = F,Cl,Br或I)与AgClO 4和的AgNO 3种,得到6种配位聚合物,其中包括[
银(L-CL )](ClO 4)} n [(L–Cl = N-(4-
氯苯基)-N'-
氰基甲am)],1 ; [Ag(L–Br)](ClO 4)} n [(L–Br = N-(4-
溴苯基)-N'-
氰基甲am)],2;[Ag(L–I)2 ](ClO 4)} n [(L–I = N-(4-
碘苯基)-N′-
氰基甲am)],3;[Ag(LF)](NO 3)} n [(LF = N-(4-
氟苯基)-N'-
氰基甲am)],4 ; [Ag(L–Cl)](NO 3)} n,5和[Ag(L–Br)](NO 3)} n,6。配合物1和2是1D螺旋链,而配合物3具有(6 3)-hcb拓扑的2D层。复合体4–6是由Ag