A new polyborate anion, [B7O9(OH)6]3−: Self assembly, XRD and thermal properties of s-fac-[Co(dien)2][B7O9(OH)6]·9H2O

M.A. Altahan; M.A. Beckett; M.J. Coles; P.N. Horton

doi:10.1016/j.inoche.2015.07.011

A new polyborate anion, [B7O9(OH)6]3−: Self assembly, XRD and thermal properties of s-fac-[Co(dien)2][B7O9(OH)6]·9H2O

M.A. Altahan
, M.A. Beckett
, M.J. Coles
, P.N. Horton

Engineering and Physical Sciences Research Council (EPSRC)

Research output: Contribution to journal › Article › peer-review

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Abstract

The title compound, s-fac-[Co(dien)2][B7O9(OH)6]·9H2O (1) (dien = HN(CH2CH2NH2)2), has been prepared as a crystalline solid in moderate yield (35%) from the reaction of B(OH)3 with [Co(dien)2][OH]3 in aqueous solution (10:1 ratio). The structure contains a novel polyborate anion [B7O9(OH)6]3 − which is structurally based on the known ‘ribbon’ isomer of [B7O9(OH)5]2 −, with an additional [OH]− group coordinated to a B atom in one of the outer boroxole rings. Compound 1 is formed by a self-assembly process in which the cation and anion mutually template themselves from equilibrium mixtures under reaction conditions. The [B7O9(OH)6]3 − anions are H-bonded to each other in layers with ‘cavities’ suitable for the [Co(dien]2]3 + complex. Three [B7O9(OH)6]3 − anions are in the secondary coordination sphere (via H-bonds) of each cation, with each anion H-bonded to three cations.

Original language	English
Pages (from-to)	95-98
Journal	Inorganic Chemistry Communications
Volume	59
DOIs	https://doi.org/10.1016/j.inoche.2015.07.011
Publication status	Published - 17 Jul 2015

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@article{119e30233b7c44188b3fa23da1cfb758,

title = "A new polyborate anion, [B7O9(OH)6]3−: Self assembly, XRD and thermal properties of s-fac-[Co(dien)2][B7O9(OH)6]·9H2O",

abstract = "The title compound, s-fac-[Co(dien)2][B7O9(OH)6]·9H2O (1) (dien = HN(CH2CH2NH2)2), has been prepared as a crystalline solid in moderate yield (35\%) from the reaction of B(OH)3 with [Co(dien)2][OH]3 in aqueous solution (10:1 ratio). The structure contains a novel polyborate anion [B7O9(OH)6]3 − which is structurally based on the known {\textquoteleft}ribbon{\textquoteright} isomer of [B7O9(OH)5]2 −, with an additional [OH]− group coordinated to a B atom in one of the outer boroxole rings. Compound 1 is formed by a self-assembly process in which the cation and anion mutually template themselves from equilibrium mixtures under reaction conditions. The [B7O9(OH)6]3 − anions are H-bonded to each other in layers with {\textquoteleft}cavities{\textquoteright} suitable for the [Co(dien]2]3 + complex. Three [B7O9(OH)6]3 − anions are in the secondary coordination sphere (via H-bonds) of each cation, with each anion H-bonded to three cations.",

author = "M.A. Altahan and M.A. Beckett and M.J. Coles and P.N. Horton",

year = "2015",

month = jul,

day = "17",

doi = "10.1016/j.inoche.2015.07.011",

language = "English",

volume = "59",

pages = "95--98",

journal = "Inorganic Chemistry Communications",

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T1 - A new polyborate anion, [B7O9(OH)6]3−: Self assembly, XRD and thermal properties of s-fac-[Co(dien)2][B7O9(OH)6]·9H2O

AU - Altahan, M.A.

AU - Beckett, M.A.

AU - Coles, M.J.

AU - Horton, P.N.

PY - 2015/7/17

Y1 - 2015/7/17

N2 - The title compound, s-fac-[Co(dien)2][B7O9(OH)6]·9H2O (1) (dien = HN(CH2CH2NH2)2), has been prepared as a crystalline solid in moderate yield (35%) from the reaction of B(OH)3 with [Co(dien)2][OH]3 in aqueous solution (10:1 ratio). The structure contains a novel polyborate anion [B7O9(OH)6]3 − which is structurally based on the known ‘ribbon’ isomer of [B7O9(OH)5]2 −, with an additional [OH]− group coordinated to a B atom in one of the outer boroxole rings. Compound 1 is formed by a self-assembly process in which the cation and anion mutually template themselves from equilibrium mixtures under reaction conditions. The [B7O9(OH)6]3 − anions are H-bonded to each other in layers with ‘cavities’ suitable for the [Co(dien]2]3 + complex. Three [B7O9(OH)6]3 − anions are in the secondary coordination sphere (via H-bonds) of each cation, with each anion H-bonded to three cations.

AB - The title compound, s-fac-[Co(dien)2][B7O9(OH)6]·9H2O (1) (dien = HN(CH2CH2NH2)2), has been prepared as a crystalline solid in moderate yield (35%) from the reaction of B(OH)3 with [Co(dien)2][OH]3 in aqueous solution (10:1 ratio). The structure contains a novel polyborate anion [B7O9(OH)6]3 − which is structurally based on the known ‘ribbon’ isomer of [B7O9(OH)5]2 −, with an additional [OH]− group coordinated to a B atom in one of the outer boroxole rings. Compound 1 is formed by a self-assembly process in which the cation and anion mutually template themselves from equilibrium mixtures under reaction conditions. The [B7O9(OH)6]3 − anions are H-bonded to each other in layers with ‘cavities’ suitable for the [Co(dien]2]3 + complex. Three [B7O9(OH)6]3 − anions are in the secondary coordination sphere (via H-bonds) of each cation, with each anion H-bonded to three cations.

U2 - 10.1016/j.inoche.2015.07.011

DO - 10.1016/j.inoche.2015.07.011

M3 - Article

SN - 1387-7003

VL - 59

SP - 95

EP - 98

JO - Inorganic Chemistry Communications

JF - Inorganic Chemistry Communications

ER -

A new polyborate anion, [B7O9(OH)6]3−: Self assembly, XRD and thermal properties of s-fac-[Co(dien)2][B7O9(OH)6]·9H2O

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