Although the apparent isotope ratio 14N35CI/14N37CI is close to the normal 3:1, that for the NBr deviates somewhat from the expected 1:1 owing to slight m/e "mistuning" of the mass filter, here operating at very high resolution. (There were experiments where the discrepancy was reversed and others where the proper 1:1 ratio was observed.) (7) R.

No abstract

X-Ray crystallography has revealed that the chiral 30-crown-10 derivative DD-(2) adopts a basketlike conformation when it forms a 1 : 1 : 1 complex with (S)-[PhCHMeNH,]+ Cl0,-and H20 in the solid state; lH n.m.r. spectroscopy suggests that 1 : 1 : 1 complexes of this type between (i) D D -( ~) , RINH,+ cations, and H,O, and (ii) D D -( ~) , RINH,+ cations, and R2NH2 are also stable in solution.

High-resolution I3C N.M.R. Spectroscopy and X-Ray Crystallography of Complexes formed by NN' -Dimethyl-1,7 -diaza -4,lO -dioxacyclododecane