Information card for entry 4505343

Structure parameters

• Common name: Metformin HCl form II
• Chemical name: N,N-Dimethylimidodicarbonimidic diamide hydrochloride
• Formula: C4 H12 Cl N5
• Calculated formula: C4 H12 Cl N5
• SMILES: [Cl-].N(=C(N)N)C(=[NH2+])N(C)C
• Title of publication: A Metastable Polymorph of Metformin Hydrochloride: Isolation and Characterization Using Capillary Crystallization and Thermal Microscopy Techniques
• Authors of publication: Childs, Scott L.; Chyall, Leonard J.; Dunlap, Jeanette T.; Coates, David A.; Stahly, Barbara C.; Stahly, G. Patrick
• Journal of publication: Crystal Growth & Design
• Year of publication: 2004
• Journal volume: 4
• Journal issue: 3
• Pages of publication: 441
• a: 7.6261 ± 0.0007 Å
• b: 6.1684 ± 0.0006 Å
• c: 18.1508 ± 0.0016 Å
• α: 90°
• β: 99.447 ± 0.002°
• γ: 90°
• Cell volume: 842.25 ± 0.13 ų
• Cell temperature: 100 ± 2 K
• Ambient diffraction temperature: 100 ± 2 K
• Number of distinct elements: 4
• Space group number: 14
• Hermann-Mauguin space group symbol: P 1 21/c 1
• Hall space group symbol: -P 2ybc
• Residual factor for all reflections: 0.0745
• Residual factor for significantly intense reflections: 0.0597
• Weighted residual factors for significantly intense reflections: 0.1321
• Weighted residual factors for all reflections included in the refinement: 0.139
• Goodness-of-fit parameter for all reflections included in the refinement: 1.173
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No