The structures of N-( t-butoxycarbonyl)-3-methylbenz[ f]indole and N-benzenesulfonyl-4-bromo-3-methylbenz[ f]indole.

N-(t-butoxycarbonyl)-3-methylbenz[ f]indole, 1, C₁₈H₁₉NO₂, crystallizes in orthorhombic space group Pna2₁ with a=6.0338(2), b=24.839(4), c=10.2481(7) Å, V=1535.9(3) ų, Z=4. The structure was refined to R=0.051 for 2007 observed reflections. The benz[ f]indole ring system is nearly planar, exhibiting mean deviation of 0.048 Å. The ester plane of the t-butoxycarbonyl substituent is nearly coplanar with the benz[ f]indole ring system, forming a C−N−C=O torsion angle with magnitude 10.6(5)⁰. N-benzenesulfonyl-4-bromo-3-methyl-benz[ f]indole, 2, C₁₉H₁₄BrNO₂S crystallizes in triclinic space group P−1 with a=8.1400(5), b=10.0587(8), c=10.8863(7) Å, α=89.927(7), β=110.495(5), γ=96.846(6)⁰, V=828.2(3) ų, Z=2. The structure was refined to R=0.050 for 2653 observed reflections. The benz[ f]indole ring system is nearly planar, with mean deviation 0.016 Å, and forms a dihedral angle of 80.93(9)⁰ with the phenyl plane. [ABSTRACT FROM AUTHOR]