Ganguli, Ashok K. ; Guloy, Arnold M. ; Alejandro Leon-Escamilla, E. ; Corbett, John D. (1993) Calcium-tin (Ca31Sn20) and related compounds: novel Zintl phases containing dimers and pentamers of tin or lead Inorganic Chemistry, 32 (20). pp. 4349-4353. ISSN 0020-1669
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Official URL: http://pubs.acs.org/doi/abs/10.1021/ic00072a031
Related URL: http://dx.doi.org/10.1021/ic00072a031
Abstract
The phases Ca31Sn20, Sr31Pb20, and Yb31Pb20 are obtained by allowing the pure elements to react in sealed Ta containers at 1100-1180°C followed by slow cooling. All are isostructural with Pu31Pt20. The structure of Ca31Sn20 was redetermined (I4/mcm, Z=4, a=12.5267(5) Å, c=39.912(7) Å, R /Rw=3.2%/3.7%). A new description of the structure is given in terms of isolated tin atoms plus well-bonded tin dimers and linear pentamers (d(Sn-Sn) =3.06-3.16 Å) in proportions of 5:5:1 within a rather distorted W5Si3-like framework.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 61942 |
| Deposited On: | 16 Sep 2011 03:45 |
| Last Modified: | 16 Sep 2011 03:45 |
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