Crystal structure of the synthetic analog of radtkeite Hg3S2Cl1.00I1.00
Authors: Pervukhina, N.1; Borisov, S.2; Magarill, S.2; Naumov, D.2; Vasiliev, V.3; Nenashev, B.3
Source: Journal of Structural Chemistry, Volume 45, Number 4, July 2004 , pp. 720-723(4)
Publisher: Springer
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Abstract:
The results of structural studies of the synthetic analog of the radtkeite mineral Hg3S2Cl1.00I1.00 are analyzed. The crystal structure of the compound has been refined; the unit cell parameters are a m = 16.827(4) Å, b m = 9.117(1) Å, c m = 13.165(5) Å,
= 130.17(2)°, V = 1543.3(8) Å3, space group c2/m, Z = 8, R = 0.0527. A possible transition a 0 
= a m; b 0 = a m + 2c m; c 0 = -b m to the pseudo-orthorhombic F cell previously determined for radtkeite, where one of the angles (
0 ) is slightly different from 90° (89.55°), has been found. Each sulfur atom in the structure is bonded to three mercury atoms, forming SHg3 umbrellas with distances 2.240(6) Å–2.474(8) Å and angles HgSHg 94.7(2)°–102.9(2)°. The SHg3 fragments are linked through Hg vertices to form corrugated [Hg12S8]
layers. The halogen atoms lie inside and between the [Hg12S8] layers; the distances are Hg-Cl and Hg-I 2.783(7) Å, 2.961(7) Å, and 3.083(4) Å–3.311(3) Å, respectively.
Keywords: mercury chalcogen halides; mercury minerals; crystal structure; X-ray diffraction analysis
Document Type: Research article
DOI: 10.1007/s10947-005-0050-5
Affiliations: 1: A. V. Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Email: pervukh@che.nsk.su 2: A. V. Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 3: United Institute of Geology, Geophysics, and Mineralogy, Siberian Branch, Russian Academy of Sciences, Novosibirsk,
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