Penta­carbonyl(di­phenyl(N-propyl­amine)­phosphine)diiron(μ-1,3-propanedi­thiol­ate)

The title compound, (μ-(SCH₂)₂CH₂)Fe(CO)₃Fe(CO)₂P(C₆H₅)₂NHCH₂CH₂CH₃, has been prepared and characterized as a a model substance for a class of enzymes known as hydrogenases.

Amygdalin trihydrate

Extensive hydrogen bonding is present in the crystal structure of the title compound [systematic name: (R)-1-cyano-1-(phenyl­meth­yl)-β-D-glucopyranos­yl-(1→6)-β-D-glucopyran­oside], C₂₀H₂₇NO₁₁·3H₂O, involving all of the hydr­oxy groups. The water mol­ecules are also involved in the hydrogen bonding; in particular, one of them acts as a bridge between the endocyclic O atoms of the two sugar residues. The overall conformation of the disaccharide is described by the exo-anomeric conformations, φ′′_H = 26° and φ′_H = 38°, together with an antiperiplanar extended conformation of the constituent sugar residues, with ψ′′ = 155°.

Sodium [1,2-bis(2-methyl-2-oxopropan­amido)­benzene](tetra­hydro­furan)­manganese(III) methanol solvate

The Mn^III complex in the title compound, Na[Mn(C₁₄H₁₆N₂O₄)(C₄H₈O)]·CH₃OH, is an important intermediate in the synthesis of some interesting Mn^V compounds. The Mn^III atom is a paramagnetic (d⁴) species in an elongated square-pyramidal (O₂N₂O) coordination belonging to point group C_s.