1) 11 -Bromo-11 -nitropentacyclo-[5.4.0.02'6.03' t °.05'9]undecane-8-one, Ci iHloBrNO3, Mr= 284-11, monoclinic, P2~/n, a = 11.155 (3), b = 8.180(2), c=12.387(3) A, /3 =113.54 (2) ° , V= 1036.2 (5) ,~3, Z = 4, Dx = 1.82 Mg m -3, A(Cu Kce) =1.54184~, tx=5-39mm-I, F(000)=568, T= 295 K, R = 0.038 for 1384 unique observed reflections.(2) 8,11-Dibromo-8,11-dinitropentacyclo[5.4.0.0x6.03"l°.05"9]undecane, CiiHioBr2N204, Mr = 394.03, monoclinic, P21, a= 6.788 (2), b= 13.696 (4), c= 6.931 (2) A, /3 = 107.19 (2) °, V= 615-5 (3) A 3, Z = 2, Dx = 2-13 Mg m -3, A(Cu K~e) = 1.54184 A, /1, = 8.58 mm-~, F(000) = 384, T= 295 K, R = 0.041 for 1003 unique observed reflections.(3) 8,11-Dichloro-8,11 -dinitropentacyclo[5.4.0.02"6.03"l°.05"9]undecane, CliHioC12N204, Mr = 305-11, monoclinic, P21, a = 6.773 (3), b= 13.579 (7), c=6.834(4)~, /~=107.24(4) °, V = 600.3 (6) A 3, Z = 2, Dx = 1.69 Mg m-3, a(Mo Ka) = 0-71073 A, /z =0.55mm-~, F(000) = 312, T= 295 K, R = 0.039 for 969 unique observed reflections. (4) 8,11 -Dinitropentacyclo[5.4.0.02'6.03"l 0.05"9]undecane, CIIHI2N204, Mr=236-22, monoclinic, P21/c, a = 8.530 (1), b = 9.909 (1), c = 12-277 (1) A, /3=96.52(2) ° , V =1031.0(2) A 3, Z =4, Ox= 1.52 Mg m -3, A(Cu Ka) = 1.54184 ~, # = 0-95 mm-l, F(000) = 496, T = 295 K, R = 0.048 for 1363 unique observed reflections. (5) 8,8,11,11-26 3 10 59
