The crystal and molecular structure of l-ornithine hydrochloride
Abstract
Crystals of ornithine hydrochloride, C5H12N2O2 · HCl belong to the monoclinic space group P21 with cell dimensions a = 4.99 Å, b = 8.00 Å, c = 10.00 Å and β = 97°. The number of molecules per unit cell is two. The structure has been solved by three-dimensional Patterson and heavy-atom Fourier syntheses. The hydrogen positions have been located from a three-dimensional difference Fourier synthesis. The positional coordinates of all the atoms, together with their temperature factors (anisotropic for non-hydrogen atoms and isotropic for hydrogen atoms), have been refined by three-dimensional least-squares method. The R value at the end of the refinement is 0.064.
The bond lengths and bond angles of ornithine hydrochloride have been compared with those of other amino acids, particularly arginine dihydrate and lysine hydrochloride. The molecule is a zwitterion, with both the alpha and terminal amino nitrogen atoms accepting an extra proton each. The side chain of this molecule has a fully extended configuration. Both the amino nitrogen atoms assume tetrahedral configuration and interlink the molecules in the crystal by a three-dimensional network of hydrogen bonds of the types N–H···Cl− and N–H···O.
Artikel in diesem Heft
- Zur Absorption der Ewaldwellen; Messungen bei simultaner Reflexion an (111) und ([unk]11) des Germaniums
- Die Verteilung der Valenzelektronen im Mg2Si
- Redetermination of the crystal structure of α-d-glucosamine hydrohalides*
- Crystal structure of d-leucyl glycine hydrobromide*
- The crystal structure of orthoenstatite
- The crystal and molecular structure of l-ornithine hydrochloride
- Untersuchungen über Umweganregung und ihre Vermeidung am Beispiel des Na2BeF4*
- Analysis of density distribution of the outer electrons in hexamine*
- Bestimmung des Elastizitätstensors trikliner Kristalle: Beispiel CuSO4 · 5H2O
- The crystal structure of 2-aminoethyl seleninic acid · HCl, NH2CH2CH2SeOOH · HCl
- Strukturuntersuchung an Bariumazid Ba(N3)2
- Energetics of conducting halides
- The crystal structure of trechmannite, AgAsS2*
- Die Kristallstruktur von Baumhauerit*
- The crystal structure of rubidium hydrogen fumarate, RbC4H3O4
- Die Kristallstruktur von Imidazol, C3N2H4, bei Zimmertemperatur
- Verfeinerung der Kristallstruktur von Benitoit BaTi[Si3O9]
- The crystal structure of In5Bi3
- Über den Ersatz von Li1+ durch Cu1+ in oxidischen Spinellen*
- Cu1+-haltige Doppeloxide mit seltenen Erdmetallen1
- Transformations ordre-désordre de la cordiérite
- The crystal structure and chemical composition of pollucite
- Die optische Orientierung der Plagioklase
- World Directory of Crystallographers
Artikel in diesem Heft
- Zur Absorption der Ewaldwellen; Messungen bei simultaner Reflexion an (111) und ([unk]11) des Germaniums
- Die Verteilung der Valenzelektronen im Mg2Si
- Redetermination of the crystal structure of α-d-glucosamine hydrohalides*
- Crystal structure of d-leucyl glycine hydrobromide*
- The crystal structure of orthoenstatite
- The crystal and molecular structure of l-ornithine hydrochloride
- Untersuchungen über Umweganregung und ihre Vermeidung am Beispiel des Na2BeF4*
- Analysis of density distribution of the outer electrons in hexamine*
- Bestimmung des Elastizitätstensors trikliner Kristalle: Beispiel CuSO4 · 5H2O
- The crystal structure of 2-aminoethyl seleninic acid · HCl, NH2CH2CH2SeOOH · HCl
- Strukturuntersuchung an Bariumazid Ba(N3)2
- Energetics of conducting halides
- The crystal structure of trechmannite, AgAsS2*
- Die Kristallstruktur von Baumhauerit*
- The crystal structure of rubidium hydrogen fumarate, RbC4H3O4
- Die Kristallstruktur von Imidazol, C3N2H4, bei Zimmertemperatur
- Verfeinerung der Kristallstruktur von Benitoit BaTi[Si3O9]
- The crystal structure of In5Bi3
- Über den Ersatz von Li1+ durch Cu1+ in oxidischen Spinellen*
- Cu1+-haltige Doppeloxide mit seltenen Erdmetallen1
- Transformations ordre-désordre de la cordiérite
- The crystal structure and chemical composition of pollucite
- Die optische Orientierung der Plagioklase
- World Directory of Crystallographers
