Studies on the Constituents of Lindera erythrocarpa MAKINO. III. The Isolation and Crystal Structure of Sodium Lucidonate

Abstract

The crystals of sodium lucidonate dihydrate were isolated from the fruits of Lindera erythrocarpa MAKINO (Lanraceae) and its structure was determined by X-ray analysis. The crystals are orthorhombic with space group P2₁2₁2₁ and unit cell dimensions are a=15.164 (7), b=15.980 (7), c=6.242 (3) Å, Z=4. The structure was solved by the direct method and refined by the block-diagonal least-squares method. The final R value for 770 observed structure factors was 0.065. The molecules are linked together by the coordination of oxygen atoms to the sodium ion and by the hydrogen bonds. The coordination number of sodium ion is six.