Investigation of the GeO2-1,6-diaminohexane-water-pyridine-HF phase diagram leading to the discovery of two novel layered germanates with extra-large rings.

Journal article

The systematic exploration of the phase diagram of the GeO(2)-1,6-diaminohexane-water-pyridine-HF system has allowed the identification of specific roles of the HF, H(2)O contents, and HF/H(2)O ratio in the formation of Ge(7)X(19) (Ge(7)), Ge(9)X(25-26) (Ge(9)), and Ge(10)X(28) (Ge(10)) clusters (X = O, OH, F). This work has led to the discovery of two novel structures with extra-large 18-membered rings accommodating 1,6-diaminohexane (DAH): SU-63, |1.5H(2)DAH|[Ge(7)O(14)X(3)]·2H(2)O, a layered germanate constructed from Ge(7) clusters with the Kagomé topology, and SU-64, |11H(2)DAH|[Ge(9)O(18)X(4)][Ge(7)O(14)X(3)](6)·16H(2)O, a germanate built of two-dimensional slabs containing both Ge(7) and Ge(9) clusters (X = OH or F). We also put SU-64 in context with previously reported cluster germanate compounds with related topologies by means of a simple crystal deconstruction study.

Authors: Guo, B; Inge, A; Bonneau, C; Sun, J; Christensen, K

• Publication status: Published
• Journal: Inorganic chemistry
• Volume: 50
• Issue: 1
• Pages: 201-207
• Publication date: 2011-01-01
• DOI: 10.1021/ic1017505
• EISSN: 1520-510X
• ISSN: 0020-1669
• Language: English