Silver(I) helicates with 2-(arylazo)pyrimidines. Single crystal X-ray structure of {2-(phenylazo)pyrimidine}silver(I) nitrate

2-(Arylazo)pyrimidines (aapm) react with AgNO3 in methanol and crystallises in a single strand right-handed helical coordination polymer, [Ag(aapm)(NO 3)](n). The X-ray structure determination of Ag[2-(phenylazo)pyrimidine] (p apm) (NO3) (abbreviated, Ag(papm)(NO3)) suggests the triangular coordinatio n around Ag(I) which is made up of chelated azoimine, -N=N-C=N-, function f rom one ligand and the third donor centre is coming from meta-related pyrim idine-N of the adjacent papm of the second Ag(papm)-unit. The coordination polymer is propagated through pyrimidine-N --> Ag bonding. (C) 2001 Elsevie r Science B.V. All rights reserved.