Subject Nielsen model

A substituted triazaadamantane, 2,4,10-trinitro-2,4,10-triazaadaman-tane, was made a few years ago by Nielsen [18J. Its synthesis showed that a methine (CH) surrounded by nitramines in an adamantane cage is chemically stable, a matter that had previously been the subject of debate. There are four such groupings in HNZADA. Otheivvise. the local connections are much the same as in HMX and RDX. Molecular mechanics model-building shows that the nitramines are no more crowded than in HMX and RDX, so there is reason to expect that this target molecule will not be especially sensitive or readily subject to chemical deterioration. 

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