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  • Title: pH-dependent displacement of [Bi(citrate)](-) with cysteine: Synthesis, spectroscopic and X-ray crystallographic characterization of Bi(cysteine)3.
    Author: Wang YJ, Xu L.
    Journal: J Inorg Biochem; 2008 Apr; 102(4):988-91. PubMed ID: 18262279.
    Abstract:
    The compound Bi(cys)(3).H(2)O (cys=L-cysteine) has been obtained from the displacement reaction of [Bi(cit)](-) (cit=citrate) with cys in aqueous solution, and characterized by X-ray crystallography for the first time. It crystallizes in orthorhombic system with the space group P2(1)2(1)2(1), a=5.135(3)A, b=11.841(7)A, c=28.120(16)A, V=1709.8(17)A(3). The displacement reaction between bismuth citrate with cysteine in aqueous solution has been found to be pH-dependent and the complete displacement of the bound citrate with cysteine occurs at physiological pH value.
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