On exposure to ammonia, Li(11)BD4 forms the ammoniate Li(11)BD4(ND3)n. Our recent experiment (RB820252) has shown that there are four distinct crystalline phases in the decomposition of n=4 to n=1. However due to overlap with Bragg peaks from the steel reactor vessel of the IGAn we where unable to solve the crystal structures for the n=3 and n=4 phases. The IGAn fitted with the quartz reactor vessel will allow us now to solve these two phases. Our proposal consists of the experiments: Reaction of Li(11)BD4 with ammonia followed by desorption and decomposition of the formed ammoniate