Directing role of anions in the syntheses of the silver-alkynyl cages [Ag14(C=CtBu)12X][BF4] (X = FCl, Br) and silver-alkynyl polymers [Ag3(C=CtBu)2(X)]n (X = Tos, NO3) - Rais,D; Mingos,DMP; Vilar,R; White,AJP; Williams,DJ (ELSEVIER SCIENCE SA, 2002)