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Siegfried Haussühl, H. A. Karapetyan, A. M. Petrosyan

Crystal structure and properties of L-arginine diphosphate

Single crystals of L-arginine diphosphate (L-HN:C(NH₂)NH(CH₂)₃CH(NH₂)COOH · 2 H₃PO₄, abbreviated as LADP) with dimensions of ca 15 × 20 × 40 mm and of optical quality were grown by controlled evaporation of aqueous solutions. A structure analysis showed that LADP (space group >P2₁2₁2₁, a₁ = 9.681(2), a₂ = 21.756(4), a₃ = 7.000(14) Å, Z = 4 at 293 K) is isotypic to L-arginine · 2 H₃AsO₄. The tensors of thermal expansion as well as of dielectric, elastic, thermoelastic, piezoelastic and piezoelectric properties were measured and compared with corresponding properties of L-arginine · H₃PO₄ · H₂O (LAP).

Zeitschrift für Kristallographie, Oldenbourg Wissenschaftsverlag

Print ISSN: 0044-2968
Volume: 218, 07/2003
Pages: 501

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