Synthesis, crystal structure and Raman spectra of AgBF4·C3O3(NC3H5)3·H2O, a silver(I) π-complex with 1,3,5-triallyl-1,3,5-triazine-2,4,6-trione

AgBF 4 , in aqueous solution, reacts with 1,3,5-triallyl-1,3,5-triazine-2,4,6 (1H,3H,5H)-trione (TTT) yielding Ag[C 3 O 3 (NC 3 H 5 ) 3 ]BF 4 ·H 2 O ( I ). It crystallizes in the monoclinic space group P 2 1 / n , a = 13.356(3) A, b = 9.4264(17) A, c = 13.360(3) A, β = 94.057(2)°, V = 1677.8(5) A 3 , and Z = 4. In the crystal structure I , Ag + is coordinated by two C C groups from two TTT molecules, one O atom from a water molecule and one more distant O atom from the triazine ring, markedly shifted from the ideal apical position. The TTT molecule uses only two allyl groups for metal bonding. The bridging role of the Ag + cations and the TTT molecules results in the formation of infinite {Ag[C 3 O 3 (NC 3 H 5 ) 3 ]·H 2 O} n chains. The Raman spectrum of I supports weak Ag–(C C) bonding.