trans-Dichloridobis{2-chloro-6-[(3-fluoro­benz­yl)amino]-9-isopropyl-9H-purine-κN⁷}platinum(II)

In the title compound, trans-[PtCl₂(C₁₅H₁₅ClFN₅)₂], the Pt^II atom, located on an inversion centre, is coordinated by the purine N atoms of the 2-chloro-6-[(3-fluoro­benz­yl)amino]-9-isopropyl-9H-purine ligands and two Cl atoms in a slightly distorted trans-square-planar coordination geometry [N—Pt—Cl angles = 89.91 (5) and 90.09 (5)°]. Weak intra­molecular N—H...Cl contacts occur. In the crystal, C—H...Cl and C—H...F contacts, as well as weak π–π stacking inter­actions [centroid–centroid distances = 3.5000 (11) and 3.6495 (12) Å] connect the mol­ecules into a three-dimensional architecture.

(Cyclo­butane-1,1-di­carboxyl­ato-κ²O,O′)(1,10-phenanthroline-κ²N,N′)platinum(II) dihydrate

The title compound, [Pt(C₆H₆O₄)(C₁₂H₈N₂)]·2H₂O, which crystallizes as two independent formula units, has the metal atom in a square-planar geometry defined by two O atoms of the chelating cyclo­butane-1,1-di­carboxyl­ate dianion and two N atoms of the chelating 1,10-phenanthroline mol­ecule (r.m.s. deviations of the PtO₂N₂ units = 0.026 and 0.026 Å). Adjacent complex and water mol­ecules are connected through inter­molecular O—H...O hydrogen bonds and C—H...O, C...O [shortest C...O distance = 3.140 (5) Å], π–π [shortest C...C distances = 3.234 (6) and 3.347 (6) Å] and Pt...π [shortest Pt...C distance = 3.358 (4) Å] inter­actions into a three-dimensional network.

5-Bromo-1H-pyrrolo­[2,3-b]pyridine

In the title compound, C₇H₅BrN₂, fused six-membered pyridine and five-membered pyrrole rings form the essentially planar aza­indole skeleton (r.m.s. deviation = 0.017 Å). In the crystal, pairs of N—H...N hydrogen bonds connect the mol­ecules into inversion dimers.

2-Chloro-6-[(2,4-dimeth­oxy­benz­yl)amino]-9-isopropyl-9H-purine

In the title compound, C₁₇H₂₀ClN₅O₂, the benzene ring and the purine ring system make a dihedral angle of 78.56 (4)°. In the crystal, mol­ecules are linked by pairs of N—H...N hydrogen bonds, forming inversion dimers. C—H...O and C—H...Cl contacts further link the mol­ecules, forming a three-dimensional network.

6-(3,5-Dimeth­oxy­benzyl­amino)-9-(oxan-2-yl)-9H-purine

The mol­ecule of the title compound, C₁₉H₂₃N₅O₃, contains six-membered pyrimidine and five-membered imidazole rings merged into the essentially planar purine skeleton (r.m.s. deviation = 0.01 Å). In the crystal, pairs of N—H...N hydrogen bonds link mol­ecules into inversion dimers. The dimers are linked via C—H...O hydrogen bonds, forming double-stranded chains propagating along [001]. These chains are linked via C—H...π and parallel slipped π–π inter­actions [centroid–centroid distance = 3.467 (1) Å; slippage 0.519 Å], forming a three-dimensional network.

N-(2-Meth­oxy­benz­yl)-9-(oxolan-2-yl)-9H-purin-6-amine

The title compound, C₁₇H₁₉N₅O₂, features an almost planar purine skeleton (r.m.s. deviation = 0.009 Å) substituted by a tetra­hydro­furan ring, which adopts an envelope conformation. The purine and benzene rings subtend a dihedral angle of 66.70 (3)°. In the crystal, pairs of N—H...N hydrogen bonds connect adjacent mol­ecules into inversion dimers. C—H...N, C—H...O, C—H...π and π–π inter­actions [pyrimidine ring centroid–centroid distance = 3.3909 (1) Å] connect the dimers into a three-dimensional architecture.

N-Benzyl­thieno[3,2-d]pyrimidin-4-amine

The title compound, C₁₃H₁₁N₃S, crystallizes with two independent mol­ecules in the asymmetric unit. The two mol­ecules are geometrically very similar and differ mainly in a spatial orientation of the benzene and thieno[3,2-d]pyrimidine ring systems [dihedral angles = 69.49 (4) and 79.05 (3)°]. The nine-membered thieno[3,2-d]pyrimidine moieties have a planar conformation (r.m.s. deviations = 0.020 and 0.012 Å). In the crystal, mol­ecules are linked through N—H...N, N—H...C and C—H...π non-covalent contacts into chains along the c axis, while neighbouring chains are connected via C—H...N inter­actions.