“…The cage compounds, extensively studied in the last few decades by Fujita, Raymond, Nitschke and others [115][116][117][118][119][120][121][122][123][124][125][126], are a fascinating class of discrete molecular entities capable of altering molecular behavior within the confined space, and termed as 'molecular flasks' by Fujita [127]. The geometrical advantage of Tp and Tp* along with MS 3 Cu 3 (M = Mo, W) in favoring tetrahedral cages may allow us to approach other cage compounds with relative ease.…”