作者:Melvyn Rowen Churchill、David George Churchill、My Hang Vo Huynh、Kenneth J. Takeuchi、Alison J. Distefano、Donald L. Jameson
DOI:10.1023/a:1009515602446
日期:——
The species 1,1-di(pyrazol-1-yl)cyclohexane, C12H16N4, crystallizes in the monoclinic space group P2(1)/c with a = 8.340(2), b = 14.281(5), c = 10.153(3) Angstrom, beta = 106.86(2)degrees, and Z = 4. The cyclohexane moiety has the chair conformation. The congener, 1,1-di(pyrazol-1-yl) cyclopentane, C11H14N4, while not isomorphous, also crystallizes in space group P2(1)/c with a = 14.350(2), b = 6.776(1), c = 11.043(2) Angstrom, beta = 100,68(1)degrees, and Z = 4. The cyclopentane ring has a conformation in which four carbon atoms are essentially coplanar, while the fifth (that with the two pyrazolyl substituents) lies 0.63 Angstrom from this plane, resulting in a bend of 41.3 degrees across the C(2)...C(5) vector. The hydrogen atoms in each structure were located directly and their coordinates refined.