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. Author manuscript; available in PMC: 2011 Nov 15.
Published in final edited form as: Chem Res Toxicol. 2010 Oct 12;23(11):1815–1823. doi: 10.1021/tx100260e

Table 4.

Percentage of [Hg(AH)2]2− and [Hg(AH)3]4− Complexes Obtained by Linear Combination Fitting of EXAFS data for the Hg(II)-GSH Solutions A1 - F1 and A2–F2.a

Solution (GSH/Hg2+) CGSH (mM) δHg(II) (ppm) % HgS2 % HgS3
A1 (2.4) 40 −984 100 0
B1 (3.5) 60 −923 95 5
C1 (4.7) 80 87 13
D1 (5.9) 100 79 21
E1 (9.4) 160 65 35
F1 (11.8) 200 52 48
A2 (2.0) 100 −960 100 0
B2 (3.0) 150 −786 78 22
C2 (4.0) 200 −657 62 38
D2 (5.0) 250 −606 54 46
E2 (8.0) 400 −483 35 65
F2 (10.0) 500 −457 30 70
a

The percentages shown are for the best fits with Hg-S bond distances 2.325 Å for [Hg(AH)2]2− and 2.42 Å for [Hg(AH)3]4− complexes. The estimated error is ±15 %.