Chiral metal gallophosphates templated by achiral triamine: Syntheses and characterizations of A[Mn(H2O)2Ga(PO4)2]3 and A[Zn3Ga(PO4)4]·H2O (A = H3DETA)

Chia Her Lin, Sue Lein Wang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

Two new transition-metal gallophosphates, (H3DETA)[Mn(H2O)2Ga(PO4) 2]3 (1) and (H3DETA)[Zn3Ga(PO4)4] ·H2O (2) (DETA = NH2(CH2)2NH(CH2) 2NH2), have been synthesized under mild hydrothermal conditions and characterized by single-crystal X-ray diffraction, thermogravimetric analysis, and magnetic susceptibility data. They are the first transitionmetal gallophosphates that adopt chiral frameworks with achiral triamine templates. Both can be prepared in pure chiral forms. The structure of 1 consists of octahedra of MnO4(H2O)2 and tetrahedra of GaO4 and PO4 to form a three-dimensional 4-connected polyhedral network in CZP topology. The most interesting feature lies in the fact that the structure is well-sustained with all water ligands removed from the octahedral Mn2+ centers. The dehydration -hydration process for the coordination water is reversible. On the basis of TG analysis, material 1 can be thermally stable up to ≈300 °C. Material 2 is built up with tetrahedra of MO4 (M = Zn and Ga) and PO4 and crystallizes in the UCSB-7 structure type. It has the highest transition-metal-to-gallium ratio among MGaPOs. Crystal data: 1, orthorhombic, C2221, a = 10.0390(6) Å, b = 17.389(1) Å, c = 16.7356(9) Å, Z = 4; 2, cubic, 14132, a = 17.9192(6) Å, Z = 12.

Original languageEnglish
Pages (from-to)96-102
Number of pages7
JournalChemistry of Materials
Volume14
Issue number1
DOIs
Publication statusPublished - 2002
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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