名称:
Study of new molecular and crystal structures of 4,4,10,10-tetramethyl-1,3,7,9-tetraazospiro[5.5]undecane-2,8-dione and its salts: Monochloride, mononitrate, and tetraiodotellurate
摘要:
This is the first work to synthesize 4,4,10,10-tetramethyl-1,3,7,9-tetraazospiro[5.5]undecane-2,8-dione monohydrate, monochloride, mononitrate, and teteraiodotellurate: C11H20N4O2 center dot H2O (I), C11H21N4O (2) (+) center dot Cl- (II), C11H21N4O (2) (+) center dot NO (3) (-) (III), and 2(C11H21N4O (2) (+) )center dot TeI (4) (2-) center dot C3H6O (IV) and determine their structures. Crystals of I are monoclinic: space group P2(1)/c, at 298 K a = 5.7118(7) , b = 17.842(2) , and c = 13.5905(16) ; beta = 91.621(11)A degrees; V = 1384.5(3) (3); d (x) = 1.239 g/cm(3), Z = 4. Crystals of II are tetragonal: space group P4(3), at 298 K a = 6.4134(3) and c = 34.292(2) ; V = 1410.47(14) (3); d (x) = 1.303 g/cm(3); Z = 4. Crystals of III are triclinic: space group , at 298 K a = 8.7614(14) , b = 9.3904(18) , and c = 10.028(2) ; alpha = 63.27(2)A degrees, beta = 78.591(16)A degrees, and gamma = 84.308(15)A degrees; V = 722.3(2) (3); d (x) = 1.40 g/cm(3); Z = 2. Crystals of IV are triclinic: space group , at 100 K a = 10.4630(4) , b = 11.9372(6) , and c = 16.4118(5) ; alpha = 72.058(3)A degrees, beta = 76.406(3)A degrees, and gamma = 87.029(3)A degrees; V = 1895.04(12) (3); d (x) = 2.06 g/cm(3); Z = 2. The synthesis of s and p metals with spirocarbone in acetone medium is found to be impossible due to the protonation by the oxygen atom of the carbonyl group. The main crystalline product of the complexation reaction is a monosalt. Evidence is provided that the recrystallization and drying of the synthesized spirocarbone preparation yields monohydrate (I); its purity and monophasity is confirmed by a Rietveld refinement of the powder X-ray pattern. The lattice parameters at room temperature are: a = 5.6885(12) , b = 17.8496(12) , and c = 13.518(3) ; beta = 91.449(15)A degrees; V = 1372.1(4) (3). The sample is monophasic.