01365nas a2200169   4500008004100000022001400041245006600055210005600121260008100177300001600258490000700274520074200281100002301023700002401046700002801070856009701098       2008                        eng d  a1600-536800aDi-tert-butyl N,N `-(octahydropentalene-2,5-diyl) dicarbamate0 aDitertbutyl NN octahydropentalene25diyl dicarbamate  a9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLANDbBLACKWELL PUBLISHINGcJUN  aO1149-U28040 v643 a<p>In the molecule of the title compound, C18H32N2O4, the central bicyclo[3.3.0] octane (octahydropentalene) has a rigid ring junction. Both rings of the bicyclo[3.3.0] octane unit adopt an envelope conformation, and the flexible tert-butylcarbamoyl side chains each have an extended conformation. Such a constrained bicyclo[3.3.0] octane aliphatic template is of interest with respect to the design of novel self-assembling motifs. Molecules related by c-glide symmetry are linked via intermolecular N-H center dot center dot center dot O hydrogen bonds, forming a two-dimensional layer structure. Neighboring layers are weakly associated along the a axis due to the close approach of the tert-butylcarbamoyl groups (2.55 angstrom).</p>1 aKendhale, Amol, M.1 aGonnade, Rajesh, G.1 aSanjayan, Gangadhar, J.  uhttps://library.ncl.res.in/content/di-tert-butyl-nn-octahydropentalene-25-diyl-dicarbamate-0