Information card for entry 7251084

Structure parameters

• Common name: Metformin Dihydrochloride
• Chemical name: Metformin Dihydrochloride
• Formula: C4 H13 Cl2 N5
• Calculated formula: C4 H13 Cl2 N5
• Title of publication: Analysis of a New Hydrochloride Salt of the Common Pharmaceutical Metformin
• Authors of publication: Hitchings, Thomas; Students, School Project; Shepherd, Angela; Alfredsson, Maria; Saines, Paul James
• Journal of publication: CrystEngComm
• Year of publication: 2025
• a: 7.0914 ± 0.0005 Å
• b: 5.7846 ± 0.0004 Å
• c: 12.48 ± 0.0009 Å
• α: 90°
• β: 105.231 ± 0.007°
• γ: 90°
• Cell volume: 493.96 ± 0.06 ų
• Cell temperature: 150 ± 0.2 K
• Ambient diffraction temperature: 150 K
• Number of distinct elements: 4
• Space group number: 4
• Hermann-Mauguin space group symbol: P 1 21 1
• Hall space group symbol: P 2yb
• Residual factor for all reflections: 0.0381
• Residual factor for significantly intense reflections: 0.0341
• Weighted residual factors for significantly intense reflections: 0.0761
• Weighted residual factors for all reflections included in the refinement: 0.0782
• Goodness-of-fit parameter for all reflections included in the refinement: 1.037
• Diffraction radiation probe: x-ray
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No