Tetra­phenyl­phospho­nium [μ₃-(4-methyl­phen­yl)tellurolato]tris­[tetra­carbonyl­iron(0)]

In the anion of the title compound, (C₂₄H₂₀P)[Fe₃(C₇H₇Te)(CO)₁₂], each Fe⁰ atom is coordinated by four CO ligands and a Te atom, resulting in a trigonal–bipyramidal coordination environment. The Te atom is coordinated by a 4-methyl­phenyl group and the Fe⁰ atoms in a distorted tetra­hedral geometry. The average Te—Fe bond length is 2.574 (4) Å.

(3R,4S,5R)-Methyl 3,5-bis­[(tert-butyl­dimethyl­sil­yl)­oxy]-4-meth­oxy­cyclo­hex-1-ene­carboxyl­ate

The title compound, C₂₁H₄₂O₅Si₂, was synthesized from (3R,4S,5R)-methyl 3,5-bis­[(tert-butyl­dimethyl­sil­yl)­oxy]-4-hy­droxy­cyclo­hex-1-ene­carboxyl­ate by an esterification reaction. The cyclo­hexene ring adopts a half-chair conformation. In the crystal, mol­ecules are linked via C—H...O hydrogen bonds, forming helical chains propagating along [010].

Dimethyl 3,3′-(phenyl­methyl­ene)bis­(1H-indole-2-carboxyl­ate)

In the title compound, C₂₇H₂₂N₂O₄, the two indole ring systems are approximately perpendicular to each other, with a dihedral angle of 84.5 (5)° between their planes; the benzene ring is twisted with respect to the two indole ring systems at angles of 78.5 (5) and 86.5 (3)°. In the crystal, mol­ecules are linked by N—H...O hydrogen bonds, weak C—H...O and C—H...N hydrogen bonds, and C—H...π inter­actions into a three-dimensional supra­molecular architecture.