(4S)-4-(Methoxy­carbonyl­methyl­amino­carbonyl)-4-(3,4,5-trimethoxy­benzamido)butanoic acid

The title compound, C₁₈H₂₄N₂O₉, was synthesized by the condensation of N-(3,4,5-trimethoxy­benzoyl)glutamic acid anhydride with L-glycine methyl ester hydro­chloride in dichloro­methane solution. The structure is stabilized by intermolecular hydrogen bonds.

Bis(3-tert-butyl-N,5-di­methyl­salicyl­aldiminato)­cobalt(II)

The title compound, [Co(C₁₃H₁₈NO)₂], was synthesized by the disproportionation of methyl-tetrakis­(tri­methyl­phosphine)­cobalt with 3-tert-butyl-N,5-di­methyl­salicyl­ald­imine in diethyl ether. The cobalt center in the structure is in a distorted tetrahedral geometry.

mer-(2-Formyl­ato­cyclo­hexen-1-olato-κ²C²,O¹)­iodo­tris­(tri­methyl­phosphine-κP)­cobalt(III)

In the title compound, [CoI(C₇H₈O₂)(C₃H₉P)₃], the cobalt center is in a distorted octahedral geometry.

(1R,2R,2′S)-2-(4-Methyl­phenyl­sulfonamido)-1-(pyrrolidine-2′-carboxamido)cyclo­hexa­ne

The title compound, C₁₈H₂₇N₃O₃S, is an organocatalyst prepared from (1R,2R)-cyclo­hexa­ne-1,2-diamine. There are bifurcated N—H...N/O intra­molecular hydrogen bonds and N—H...O and C—H...O inter­molecular inter­actions.

2-Meth­oxy-4-(phenyl­imino­meth­yl)phenol

The title compound, C₁₄H₁₃NO₂, contains two aromatic rings, which are bridged by a C=N unit. The 4-hydr­oxy-3-methoxy­phenyl and phenyl groups are trans to each other. The mol­ecular structure is stabilized by an intra­molecular O—H...O hydrogen bond. In addition, there is an inter­molecular O—H...N hydrogen bond and inter­molecular C—H...O close contacts. There are two mol­ecules in the asymmetric unit.

6,6′-Dihydr­oxy-5,5′-dimeth­oxy-3,3′-methyl­enedibenzaldehyde

In the title compound, C₁₇H₁₆O₆, the asymmetric unit contains one half-mol­ecule. A twofold rotation axis passes through the C atom linking the two rings. Intra­molecular O—H...O hydrogen bonds seem to be effective in stabilizing the mol­ecular structure.