In the mol-ecule of the title compound, C(16)H(16)N(2), the ethano-strapped analogue of unsubstituted Tröger's base, the dihedral angle between the two benzene rings is 75.85 (4)°, the smallest angle measured for an ethano-strapped analogue.

In the centrosymmetric dinuclear title compound, [Ti(2)(C(10)H(8)NO)(2)(C(2)H(5)O)(6)], the Ti atom is bonded to an N,O-bidentate quinolin-8-olate ligand, two terminal ethano-late anions and two bridging ethano-late anions in a distorted TiNO(5) octa-hedral geometry. An intra-molecular C-H⋯O hydrogen bond occurs; in the crystal, inter-molecular C-H⋯O inter-actions help to establish the packing.

The asymmetric unit of the title tetra-nuclear niobium(V) compound, [Nb(4)(C(2)H(5)O)(8)(C(5)H(7)O(2))(4)O(4)], contains two Nb(V) atoms, two bridging O atoms, two acetyl-acetonate and four ethano-late ligands. Each Nb(V) atom is six-coordinated by the bridging O atoms, two ethano-late and one chelating acetyl-acetonate ligands. The Nb-O distances vary between 1.817 (2) and 2.201 (2) Å and the ...

In the title compound, C20H17NO3 (alternative name: N-hy-droxy-9,10-dimethyl-9,10-ethano-anthracene-11,12-dicarboximide), the rigid ethano-anthracene-dicarboximide moiety has a roof-shaped geometry, the inter-planar angle between the two terminal phenyl rings being 124.9 (6)°. In the crystal, mol-ecules are linked via O-H⋯O hydrogen bonds, forming chains along [010]. C-H⋯O and C-H⋯π inter-actio...

The typically planar amide when incorporated into bicyclic systems can undergo a significant distortion from planarity resulting in physical properties and reactivity that deviate from classical amide behaviour. Herein, we report a succinct protocol that utilises potassium permanganate to selectively α-oxygenate the benzylic position of ethano-Tröger's base derivatives to yield a new class of t...

In the mol-ecule of the title compound, C(16)H(14)Cl(2)N(2), the ethano-strapped 2,8-dichloro analogue of Tröger's base, the dihedral angle between the two benzene rings is 87.01 (3)°.

The asymmetric unit of the title compound, 2C(2)H(8)NO(+)·C(4)H(4)O(4) (2-)·C(4)H(6)O(4), consists of half a succinate anion, half a succinic acid mol-ecule and one ethano-laminium cation. The succinate anion and succinic acid mol-ecule, both of which are located on inversion centres, are linked by O-H⋯O hydrogen bonds, forming a chain along the [2[Formula: see text]0] direction. The chain and ...

The catalysis of the Hajos–Parrish reaction by cis - and trans -4,5-ethano-proline was explored experimentally computationally with DFT (?B97X-D MN15) DLPNO-CCSD(T).

New functionalized ethano-bridged Tröger bases are readily prepared using a simple alkylation/rearrangement sequence which affords configurationally stable derivatives as single stereoisomers (de > 96%).