Polyborate anions partnered with large non-metal cations: triborate(1-), pentaborate(1-), and heptaborate(2-) salts
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In: European Journal of Inorganic Chemistry , Vol. 2017, No. 38-39, 2017, p. 4510-4518.
Research output: Contribution to journal › Article › peer-review
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T1 - Polyborate anions partnered with large non-metal cations: triborate(1-), pentaborate(1-), and heptaborate(2-) salts
AU - Beckett, Michael
AU - Coles, Simon
AU - Horton, Peter N.
AU - Jones, Charlotte
N1 - journal has rated this as a 'Very Important Paper'
PY - 2017
Y1 - 2017
N2 - New polyborate salts containing bulky non-metal cations have been prepared from either the free organic base or the [non-metal cation][OH] in methanolic aqueous solution: 1-adamantylammonium pentaborate [C10H18N][B5O6(OH)4] (1), 2-adamantylammonium pentaborate dihydrate [C10H18N][B5O6(OH)4].2H2O (2), N,N-dimethyl-1-adamantylammonium pentaborate.boric acid monohydrate [C12H22N][B5O6(OH)4].B(OH)3.H2O (3), N,N,N-trimethyl-1-adamantylammonium pentaborate trihydrate [C13H24N][B5O6(OH)4].3H2O (4), N,N,N-trimethyl-2-adamantylammonium pentaborate trihydrate [C13H24N][B5O6(OH)4].3H2O (5), dibenzylammonium pentaborate sesquihydrate [C14H16N][B5O6(OH)4].1.5H2O (6), bis(triphenylphosphine)iminium pentaborate sesquihydrate [C36H30NP2][B5O6(OH)4].1.5H2O (7), bis(triphenylphosphine)iminium triborate.2.5 hydrate [C36H30NP2][B3O3(OH)4].2.5H2O (8), 4,4’-bipiperidinium heptaborate dihydrate [C10H22N2][B7O9(OH)5].2H2O (9). All compounds were characterized by thermal (TGA/DSC), and spectroscopic analysis (NMR, IR). Compounds 3 - 5 and 9 have been characterized by single-crystal XRD studies. The waters of crystallization in 3 - 6 and the boric acid of crystallization in 3 play important structural roles in expanding the supramolecular pentaborate(1-) lattices to accommodate the bulkier cations.
AB - New polyborate salts containing bulky non-metal cations have been prepared from either the free organic base or the [non-metal cation][OH] in methanolic aqueous solution: 1-adamantylammonium pentaborate [C10H18N][B5O6(OH)4] (1), 2-adamantylammonium pentaborate dihydrate [C10H18N][B5O6(OH)4].2H2O (2), N,N-dimethyl-1-adamantylammonium pentaborate.boric acid monohydrate [C12H22N][B5O6(OH)4].B(OH)3.H2O (3), N,N,N-trimethyl-1-adamantylammonium pentaborate trihydrate [C13H24N][B5O6(OH)4].3H2O (4), N,N,N-trimethyl-2-adamantylammonium pentaborate trihydrate [C13H24N][B5O6(OH)4].3H2O (5), dibenzylammonium pentaborate sesquihydrate [C14H16N][B5O6(OH)4].1.5H2O (6), bis(triphenylphosphine)iminium pentaborate sesquihydrate [C36H30NP2][B5O6(OH)4].1.5H2O (7), bis(triphenylphosphine)iminium triborate.2.5 hydrate [C36H30NP2][B3O3(OH)4].2.5H2O (8), 4,4’-bipiperidinium heptaborate dihydrate [C10H22N2][B7O9(OH)5].2H2O (9). All compounds were characterized by thermal (TGA/DSC), and spectroscopic analysis (NMR, IR). Compounds 3 - 5 and 9 have been characterized by single-crystal XRD studies. The waters of crystallization in 3 - 6 and the boric acid of crystallization in 3 play important structural roles in expanding the supramolecular pentaborate(1-) lattices to accommodate the bulkier cations.
U2 - 10.1002/ejic.201700551
DO - 10.1002/ejic.201700551
M3 - Article
VL - 2017
SP - 4510
EP - 4518
JO - European Journal of Inorganic Chemistry
JF - European Journal of Inorganic Chemistry
SN - 1434-1948
IS - 38-39
ER -