But when Oddo Colonna was elected pope as Martin V., he allied himself with Joanna, who promised to give up Rome, while Sforza returned to Naples.
Oddo, Chemisches Centralblatt, 1896, 228.) Acid calcium silicates are represented in the mineral kingdom by gyrolite, H2Ca2(S103)3 H20, a lime zeolite, sometimes regarded as an altered form of apophyllite, which is itself an acid calcium silicate containing an alkaline fluoride, by okenite, H2Ca(S103)2 H20, and by xonalite 4CaSiO 3 41 2 O.
When the last-named condition had been fulfilled on the 28th of October the conclave began, on the 8th of November 1417, in the Kaufhaus of Constance; and, no later than St Martin's day, the cardinal-deacon Oddo Colonna was elected Pope Martin V.
Both these compounds on heating give phosphomonamide, PON, of which a polymer (PON) 2 had been described by Oddo (Gazz.