Di-μ-benzoato-κ³O,O′:O;κ³O:O,O′-bis­[aqua­(nitrato-κO)(1,10-phenanthroline-κ²N,N′)lead(II)]

The title compound, [Pb₂(C₇H₅O₂)₂(NO₃)₂(C₁₂H₈N₂)₂(H₂O)₂], crystallizes as a dinuclear centrosymmetric dimer containing two Pb^II atoms bridged by two benzoate ligands. Each Pb^II atom is seven-coordinated by a water mol­ecule, a nitrate anion, a 1,10-phenanthroline (phen) ligand and two benzoate anions. The crystal packing is stabilized by O—H...O hydrogen bonds and by π–π stacking between neighboring phen ligands, with a centroid–centroid distance of 3.557 (3) Å.

41-Azido-41-de­oxy­rapamycin

The title compound, C₅₁H₇₈N₄O₁₂, is a derivative of rapamycin, a triene macrolide anti­biotic mol­ecule isolated from Streptomyces hygroscopicus. The macrocyclic ring structure has 15 chiral centres, with one of the substituent hy­droxy groups giving an intra­molecular hydrogen bond to a ketone O-atom acceptor. The mol­ecules also form inter­molecular hy­droxy–ketone O—H...O hydrogen-bonding associations, giving one-dimensional chains extending along (010). The crystal has 108 ų solvent-accessible voids.

Methyl 5-hy­droxy-3-phenyl-1,2-oxazolidine-5-carboxyl­ate

In the title compound, C₁₁H₁₃NO₄, the isoxazolidine ring has an envelope conformation with the O atom as the flap. In the crystal, mol­ecules are liked via N—H...O and bifurcated O—H...(O,N) hydrogen bonds forming chains propagating along [010]. There are also C—H...O inter­actions present.

40-De­oxy-40(S)-iodo­rapamycin

The title compound, C₅₁H₇₈INO₁₂, contains a 29-membered ring incorporating amide, lactone and ester groups. It contains a total of 15 stereogenic centres. In the crystal, mol­ecules are linked by O—H...O hydrogen bonds, forming C(8) chains propagating in [100]. A weak intra­molecular O—H...O inter­action also occurs.