| Popis: |
C16H20N2, M = 240.35, monoclinic, P21/n, a = 6.800(1), b = 6.833(2), c = 14.427(2)A,β = 97.55(1)°, V = 664.5(4)A)−3, Z = 2, Dx = 1.202 g cm−3, μ = 1.33 cm−1, λ(Mo-Kα) = 0.71073A, F(000) = 520, room temperature, R = 0.079, wR = 0.080 for 113 variables and 499 observed [I ≥ 3σ(I)] reflections of 1575 measurements. The structure of this new compound is proved and its configuration established as meso. The large sterical hindrance in the central part of the molecule is reflected in an unusually long central C-C bond (1.635(7)A). It explains why in the mass spectrum under electron impact the molecular ion peak [M+] is missing and the peak at half the molecular weight [1/2M+] has a high abundance. |
