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A novel heterocyclic compound: catena-poly[[[diaquasodium(I)]-di-μ-aqua] hemi(1,5-dihydroxy-4,8,9-trioxa-2,6-diazabicyclo[3.3.1]nona-2,6-diene-3,7-diolate)]. Retraction
aSchool of Life Sciences, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, People's Republic of China, and bDepartment of Chemistry, Shangrao Normal College, Jiangxi, People's Republic of China
*Correspondence e-mail: zhuhl@nju.edu.cn
The paper by Fang et al. [Acta Cryst. (2007), C63, m193–m194 ] is retracted. It has subsequently been shown that the crystal studied was borax.
We wish to withdraw the paper by Fang et al. (2007![[Fang, R.-Q., Xiao, Z.-P., Cao, P., Shi, D.-H. & Zhu, H.-L. (2007). Acta Cryst. C63, m193-m194.]](../../../../../../logos/arrows/c_arr.gif "Fang, R.-Q., Xiao, Z.-P., Cao, P., Shi, D.-H. & Zhu, H.-L. (2007). Acta Cryst. C63, m193-m194.")
) on a compound alleged to be [Na(H2O)4]2(C4H2N2O7). It has subsequently been shown that the crystal studied was borax, [Na(H2O)4]2(B4H4O9), which was studied by neutron diffraction by Levy & Lisensky (1978). The C, H and N analytical data reported by us in our paper are also incorrect.
References
Fang, R.-Q., Xiao, Z.-P., Cao, P., Shi, D.-H. & Zhu, H.-L. (2007). Acta Cryst. C63, m193–m194. Web of Science CSD CrossRef IUCr Journals Google Scholar
Levy, H. A. & Lisensky, G. C. (1978). Acta Cryst. B34, 3502–3510. CrossRef CAS IUCr Journals Web of Science Google Scholar
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