A family of octahedral rhenium cluster complexes [Re6Q 8(H2O)n(OH)6-n]n-4 (Q = S, Se; n = 0-6): Structural and pH-dependent spectroscopic studies

Konstantin A. Brylev; Yuri V. Mironov; Spartak S. Yarovoi; Nikolai G. Naumov; Vladimir E. Fedorov; Sung Jin Kim; Noboru Kitamura; Yusuke Kuwahara; Konatsu Yamada; Shoji Ishizaka; Yoichi Sasaki

doi:10.1021/ic7005265

A family of octahedral rhenium cluster complexes [Re₆Q ₈(H₂O)_n(OH)_6-n]^n-4 (Q = S, Se; n = 0-6): Structural and pH-dependent spectroscopic studies

Konstantin A. Brylev, Yuri V. Mironov, Spartak S. Yarovoi, Nikolai G. Naumov, Vladimir E. Fedorov, Sung Jin Kim, Noboru Kitamura, Yusuke Kuwahara, Konatsu Yamada, Shoji Ishizaka, Yoichi Sasaki

Chemistry & Nanoscience

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23 Scopus citations

Abstract

The conversions of hexahydroxo rhenium cluster complexes [Re ₆Q₈(OH)₆]^4- (Q = S, Se) in aqueous solutions in a wide pH range were investigated by chemical methods and spectroscopic measurements. Dependences of the spectroscopic and excited-state properties of the solutions on pH have been studied in detail. It has been found that a pH decrease of aqueous solutions of the potassium salts K ₄[Re₆Q₈(OH)₆]·8H ₂O (Q = S, Se) results in the formation of aquahydroxo and hexaaqua cluster complexes with the general formula [Re₆Q₈(H ₂O)_n(OH)_6-n]^n-4 that could be considered as a result of the protonation of the terminal OH^- ligands in the hexahydroxo complexes. The compounds K₂[Re₆S ₈(H₂O)₂(OH)₄]·2H ₂O (1), [Re₆S₈(H₂O) ₄(OH)₂]·12H₂O (2), [Re₆S ₈(H₂O)₆][Re₆S₆Br ₈]·10H₂O (3), and [Re₆Se ₈(H₂O)₄(OH)₂] (4) have been isolated and characterized by X-ray single-crystal diffraction and elemental analyses and infrared (IR) spectroscopy. In crystal structures of the aquahydroxo complexes, the cluster units are connected to each other by an extensive system of very strong hydrogen bonds between terminal ligands.

Original language	English
Pages (from-to)	7414-7422
Number of pages	9
Journal	Inorganic Chemistry
Volume	46
Issue number	18
DOIs	https://doi.org/10.1021/ic7005265
State	Published - 3 Sep 2007

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Brylev, K. A., Mironov, Y. V., Yarovoi, S. S., Naumov, N. G., Fedorov, V. E., Kim, S. J., Kitamura, N., Kuwahara, Y., Yamada, K., Ishizaka, S., & Sasaki, Y. (2007). A family of octahedral rhenium cluster complexes [Re₆Q ₈(H₂O)_n(OH)_6-n]^n-4 (Q = S, Se; n = 0-6): Structural and pH-dependent spectroscopic studies. Inorganic Chemistry, 46(18), 7414-7422. https://doi.org/10.1021/ic7005265

@article{e377cc699d60426b93e96c8647430df2,

title = "A family of octahedral rhenium cluster complexes [Re6Q 8(H2O)n(OH)6-n]n-4 (Q = S, Se; n = 0-6): Structural and pH-dependent spectroscopic studies",

abstract = "The conversions of hexahydroxo rhenium cluster complexes [Re 6Q8(OH)6]4- (Q = S, Se) in aqueous solutions in a wide pH range were investigated by chemical methods and spectroscopic measurements. Dependences of the spectroscopic and excited-state properties of the solutions on pH have been studied in detail. It has been found that a pH decrease of aqueous solutions of the potassium salts K 4[Re6Q8(OH)6]·8H 2O (Q = S, Se) results in the formation of aquahydroxo and hexaaqua cluster complexes with the general formula [Re6Q8(H 2O)n(OH)6-n]n-4 that could be considered as a result of the protonation of the terminal OH- ligands in the hexahydroxo complexes. The compounds K2[Re6S 8(H2O)2(OH)4]·2H 2O (1), [Re6S8(H2O) 4(OH)2]·12H2O (2), [Re6S 8(H2O)6][Re6S6Br 8]·10H2O (3), and [Re6Se 8(H2O)4(OH)2] (4) have been isolated and characterized by X-ray single-crystal diffraction and elemental analyses and infrared (IR) spectroscopy. In crystal structures of the aquahydroxo complexes, the cluster units are connected to each other by an extensive system of very strong hydrogen bonds between terminal ligands.",

author = "Brylev, {Konstantin A.} and Mironov, {Yuri V.} and Yarovoi, {Spartak S.} and Naumov, {Nikolai G.} and Fedorov, {Vladimir E.} and Kim, {Sung Jin} and Noboru Kitamura and Yusuke Kuwahara and Konatsu Yamada and Shoji Ishizaka and Yoichi Sasaki",

year = "2007",

month = sep,

day = "3",

doi = "10.1021/ic7005265",

language = "English",

volume = "46",

pages = "7414--7422",

journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

number = "18",

}

Brylev, KA, Mironov, YV, Yarovoi, SS, Naumov, NG, Fedorov, VE, Kim, SJ, Kitamura, N, Kuwahara, Y, Yamada, K, Ishizaka, S & Sasaki, Y 2007, 'A family of octahedral rhenium cluster complexes [Re₆Q ₈(H₂O)_n(OH)_6-n]^n-4 (Q = S, Se; n = 0-6): Structural and pH-dependent spectroscopic studies', Inorganic Chemistry, vol. 46, no. 18, pp. 7414-7422. https://doi.org/10.1021/ic7005265

TY - JOUR

T1 - A family of octahedral rhenium cluster complexes [Re6Q 8(H2O)n(OH)6-n]n-4 (Q = S, Se; n = 0-6)

T2 - Structural and pH-dependent spectroscopic studies

AU - Brylev, Konstantin A.

AU - Mironov, Yuri V.

AU - Yarovoi, Spartak S.

AU - Naumov, Nikolai G.

AU - Fedorov, Vladimir E.

AU - Kim, Sung Jin

AU - Kitamura, Noboru

AU - Kuwahara, Yusuke

AU - Yamada, Konatsu

AU - Ishizaka, Shoji

AU - Sasaki, Yoichi

PY - 2007/9/3

Y1 - 2007/9/3

N2 - The conversions of hexahydroxo rhenium cluster complexes [Re 6Q8(OH)6]4- (Q = S, Se) in aqueous solutions in a wide pH range were investigated by chemical methods and spectroscopic measurements. Dependences of the spectroscopic and excited-state properties of the solutions on pH have been studied in detail. It has been found that a pH decrease of aqueous solutions of the potassium salts K 4[Re6Q8(OH)6]·8H 2O (Q = S, Se) results in the formation of aquahydroxo and hexaaqua cluster complexes with the general formula [Re6Q8(H 2O)n(OH)6-n]n-4 that could be considered as a result of the protonation of the terminal OH- ligands in the hexahydroxo complexes. The compounds K2[Re6S 8(H2O)2(OH)4]·2H 2O (1), [Re6S8(H2O) 4(OH)2]·12H2O (2), [Re6S 8(H2O)6][Re6S6Br 8]·10H2O (3), and [Re6Se 8(H2O)4(OH)2] (4) have been isolated and characterized by X-ray single-crystal diffraction and elemental analyses and infrared (IR) spectroscopy. In crystal structures of the aquahydroxo complexes, the cluster units are connected to each other by an extensive system of very strong hydrogen bonds between terminal ligands.

AB - The conversions of hexahydroxo rhenium cluster complexes [Re 6Q8(OH)6]4- (Q = S, Se) in aqueous solutions in a wide pH range were investigated by chemical methods and spectroscopic measurements. Dependences of the spectroscopic and excited-state properties of the solutions on pH have been studied in detail. It has been found that a pH decrease of aqueous solutions of the potassium salts K 4[Re6Q8(OH)6]·8H 2O (Q = S, Se) results in the formation of aquahydroxo and hexaaqua cluster complexes with the general formula [Re6Q8(H 2O)n(OH)6-n]n-4 that could be considered as a result of the protonation of the terminal OH- ligands in the hexahydroxo complexes. The compounds K2[Re6S 8(H2O)2(OH)4]·2H 2O (1), [Re6S8(H2O) 4(OH)2]·12H2O (2), [Re6S 8(H2O)6][Re6S6Br 8]·10H2O (3), and [Re6Se 8(H2O)4(OH)2] (4) have been isolated and characterized by X-ray single-crystal diffraction and elemental analyses and infrared (IR) spectroscopy. In crystal structures of the aquahydroxo complexes, the cluster units are connected to each other by an extensive system of very strong hydrogen bonds between terminal ligands.

UR - http://www.scopus.com/inward/record.url?scp=34548625977&partnerID=8YFLogxK

U2 - 10.1021/ic7005265

DO - 10.1021/ic7005265

M3 - Article

C2 - 17676730

AN - SCOPUS:34548625977

SN - 0020-1669

VL - 46

SP - 7414

EP - 7422

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 18

ER -

A family of octahedral rhenium cluster complexes [Re6Q 8(H2O)n(OH)6-n]n-4 (Q = S, Se; n = 0-6): Structural and pH-dependent spectroscopic studies

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A family of octahedral rhenium cluster complexes [Re₆Q ₈(H₂O)_n(OH)_6-n]^n-4 (Q = S, Se; n = 0-6): Structural and pH-dependent spectroscopic studies