Interconversion between Polymeric Orange and Monomeric Green Forms of a Schiff Base-Oxovanadium(IV) Complex

Kiyohiko Nakajima, Masaaki Kojima, Shunryo Azuma, Ryuichi Kasahara, Masanobu Tsuchimoto, Yoshihiro Kubozono, Hironobu Maeda, Setsuo Kashino, Shigeru Ohba, Yuzo Yoshikawa, Junnosuke Fujita

Research output: Contribution to journalArticle

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Abstract

The orange and green forms of the Schiff base-oxovanadium(IV) complex, [VO{sal-(RR)-stien}]·MeOH (1, green), [VO{sal-(RR)-stien}]·2CHC13 (2, green), and [VO{sal-(RR)-stien}]·CH3CN (3, orange) (H2{sal-(RR)-stien} = N,N′-disalicylidene-(RR)-1,2-diphenyl-1,2-ethanediamine), have been prepared, and their crystal structures were determined by an X-ray method. The green forms, 1 and 2, contain mononuclear square pyramidal molecules of the complex, while the orange form 3 consists of individual complexes stacked to give an infinite linear ⋯V=O⋯V=O⋯ chain. 1, which crystallizes as monoclinic in space group P21 with Z=4, has the cell parameters a=16.684(2), b=16.923(4), c=9.249(3) Å, β = 105.76(2)°, and V=2513(1) Å3. 2, which crystallizes as triclinic in space group P1 with Z=2, has the cell parameters a = 13.187(3), b = 13.469(3), c = 10.450(3) Å, α = 103.72(2), β = 103.20(3), γ = 63.03(2)°, and V = 1591.2(7) Å3. 3 crystallizes as triclinic in space group P1 with Z=2. The cell parameters are a = 13.300(3), b = 13.667(4), c = 7.551(1) Å, α = 90.44(2), β = 94.51(2), γ = 97.36(2)°, and V = 1357(1) Å3. The final R indices are R = 0.059 and RW = 0.062 for 1, R = 0.098 and RW = 0.090 for 2, and R = 0.053 and Rw = 0.042 for 3. The structural characteristics of these complexes are compared and discussed. 3 shows piezochromism (mechanochromism); its color changes from orange to green upon grinding. 1 and 2 turn orange when heated at 120 °C for a few minutes. The extent of conversion either by grinding or heating was studied by EXAFS (X-ray absorption fine structure) and IR spectroscopy. The orange crystals turn green when exposed to chloroform vapor, and the green crystals turn orange upon exposure to acetonitrile vapor.

Original languageEnglish
Pages (from-to)3207-3216
Number of pages10
JournalBulletin of the Chemical Society of Japan
Volume69
Issue number11
Publication statusPublished - 1996 Nov

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ethylenediamine
Schiff Bases
X ray absorption fine structure spectroscopy
Vapors
Crystals
Chloroform
Infrared spectroscopy
Crystal structure
Color
Heating
X rays
Molecules
oxovanadium IV
diphenyl
acetonitrile

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Nakajima, K., Kojima, M., Azuma, S., Kasahara, R., Tsuchimoto, M., Kubozono, Y., ... Fujita, J. (1996). Interconversion between Polymeric Orange and Monomeric Green Forms of a Schiff Base-Oxovanadium(IV) Complex. Bulletin of the Chemical Society of Japan, 69(11), 3207-3216.

Interconversion between Polymeric Orange and Monomeric Green Forms of a Schiff Base-Oxovanadium(IV) Complex. / Nakajima, Kiyohiko; Kojima, Masaaki; Azuma, Shunryo; Kasahara, Ryuichi; Tsuchimoto, Masanobu; Kubozono, Yoshihiro; Maeda, Hironobu; Kashino, Setsuo; Ohba, Shigeru; Yoshikawa, Yuzo; Fujita, Junnosuke.

In: Bulletin of the Chemical Society of Japan, Vol. 69, No. 11, 11.1996, p. 3207-3216.

Research output: Contribution to journalArticle

Nakajima, K, Kojima, M, Azuma, S, Kasahara, R, Tsuchimoto, M, Kubozono, Y, Maeda, H, Kashino, S, Ohba, S, Yoshikawa, Y & Fujita, J 1996, 'Interconversion between Polymeric Orange and Monomeric Green Forms of a Schiff Base-Oxovanadium(IV) Complex', Bulletin of the Chemical Society of Japan, vol. 69, no. 11, pp. 3207-3216.
Nakajima K, Kojima M, Azuma S, Kasahara R, Tsuchimoto M, Kubozono Y et al. Interconversion between Polymeric Orange and Monomeric Green Forms of a Schiff Base-Oxovanadium(IV) Complex. Bulletin of the Chemical Society of Japan. 1996 Nov;69(11):3207-3216.
Nakajima, Kiyohiko ; Kojima, Masaaki ; Azuma, Shunryo ; Kasahara, Ryuichi ; Tsuchimoto, Masanobu ; Kubozono, Yoshihiro ; Maeda, Hironobu ; Kashino, Setsuo ; Ohba, Shigeru ; Yoshikawa, Yuzo ; Fujita, Junnosuke. / Interconversion between Polymeric Orange and Monomeric Green Forms of a Schiff Base-Oxovanadium(IV) Complex. In: Bulletin of the Chemical Society of Japan. 1996 ; Vol. 69, No. 11. pp. 3207-3216.
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title = "Interconversion between Polymeric Orange and Monomeric Green Forms of a Schiff Base-Oxovanadium(IV) Complex",
abstract = "The orange and green forms of the Schiff base-oxovanadium(IV) complex, [VO{sal-(RR)-stien}]·MeOH (1, green), [VO{sal-(RR)-stien}]·2CHC13 (2, green), and [VO{sal-(RR)-stien}]·CH3CN (3, orange) (H2{sal-(RR)-stien} = N,N′-disalicylidene-(RR)-1,2-diphenyl-1,2-ethanediamine), have been prepared, and their crystal structures were determined by an X-ray method. The green forms, 1 and 2, contain mononuclear square pyramidal molecules of the complex, while the orange form 3 consists of individual complexes stacked to give an infinite linear ⋯V=O⋯V=O⋯ chain. 1, which crystallizes as monoclinic in space group P21 with Z=4, has the cell parameters a=16.684(2), b=16.923(4), c=9.249(3) {\AA}, β = 105.76(2)°, and V=2513(1) {\AA}3. 2, which crystallizes as triclinic in space group P1 with Z=2, has the cell parameters a = 13.187(3), b = 13.469(3), c = 10.450(3) {\AA}, α = 103.72(2), β = 103.20(3), γ = 63.03(2)°, and V = 1591.2(7) {\AA}3. 3 crystallizes as triclinic in space group P1 with Z=2. The cell parameters are a = 13.300(3), b = 13.667(4), c = 7.551(1) {\AA}, α = 90.44(2), β = 94.51(2), γ = 97.36(2)°, and V = 1357(1) {\AA}3. The final R indices are R = 0.059 and RW = 0.062 for 1, R = 0.098 and RW = 0.090 for 2, and R = 0.053 and Rw = 0.042 for 3. The structural characteristics of these complexes are compared and discussed. 3 shows piezochromism (mechanochromism); its color changes from orange to green upon grinding. 1 and 2 turn orange when heated at 120 °C for a few minutes. The extent of conversion either by grinding or heating was studied by EXAFS (X-ray absorption fine structure) and IR spectroscopy. The orange crystals turn green when exposed to chloroform vapor, and the green crystals turn orange upon exposure to acetonitrile vapor.",
author = "Kiyohiko Nakajima and Masaaki Kojima and Shunryo Azuma and Ryuichi Kasahara and Masanobu Tsuchimoto and Yoshihiro Kubozono and Hironobu Maeda and Setsuo Kashino and Shigeru Ohba and Yuzo Yoshikawa and Junnosuke Fujita",
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T1 - Interconversion between Polymeric Orange and Monomeric Green Forms of a Schiff Base-Oxovanadium(IV) Complex

AU - Nakajima, Kiyohiko

AU - Kojima, Masaaki

AU - Azuma, Shunryo

AU - Kasahara, Ryuichi

AU - Tsuchimoto, Masanobu

AU - Kubozono, Yoshihiro

AU - Maeda, Hironobu

AU - Kashino, Setsuo

AU - Ohba, Shigeru

AU - Yoshikawa, Yuzo

AU - Fujita, Junnosuke

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N2 - The orange and green forms of the Schiff base-oxovanadium(IV) complex, [VO{sal-(RR)-stien}]·MeOH (1, green), [VO{sal-(RR)-stien}]·2CHC13 (2, green), and [VO{sal-(RR)-stien}]·CH3CN (3, orange) (H2{sal-(RR)-stien} = N,N′-disalicylidene-(RR)-1,2-diphenyl-1,2-ethanediamine), have been prepared, and their crystal structures were determined by an X-ray method. The green forms, 1 and 2, contain mononuclear square pyramidal molecules of the complex, while the orange form 3 consists of individual complexes stacked to give an infinite linear ⋯V=O⋯V=O⋯ chain. 1, which crystallizes as monoclinic in space group P21 with Z=4, has the cell parameters a=16.684(2), b=16.923(4), c=9.249(3) Å, β = 105.76(2)°, and V=2513(1) Å3. 2, which crystallizes as triclinic in space group P1 with Z=2, has the cell parameters a = 13.187(3), b = 13.469(3), c = 10.450(3) Å, α = 103.72(2), β = 103.20(3), γ = 63.03(2)°, and V = 1591.2(7) Å3. 3 crystallizes as triclinic in space group P1 with Z=2. The cell parameters are a = 13.300(3), b = 13.667(4), c = 7.551(1) Å, α = 90.44(2), β = 94.51(2), γ = 97.36(2)°, and V = 1357(1) Å3. The final R indices are R = 0.059 and RW = 0.062 for 1, R = 0.098 and RW = 0.090 for 2, and R = 0.053 and Rw = 0.042 for 3. The structural characteristics of these complexes are compared and discussed. 3 shows piezochromism (mechanochromism); its color changes from orange to green upon grinding. 1 and 2 turn orange when heated at 120 °C for a few minutes. The extent of conversion either by grinding or heating was studied by EXAFS (X-ray absorption fine structure) and IR spectroscopy. The orange crystals turn green when exposed to chloroform vapor, and the green crystals turn orange upon exposure to acetonitrile vapor.

AB - The orange and green forms of the Schiff base-oxovanadium(IV) complex, [VO{sal-(RR)-stien}]·MeOH (1, green), [VO{sal-(RR)-stien}]·2CHC13 (2, green), and [VO{sal-(RR)-stien}]·CH3CN (3, orange) (H2{sal-(RR)-stien} = N,N′-disalicylidene-(RR)-1,2-diphenyl-1,2-ethanediamine), have been prepared, and their crystal structures were determined by an X-ray method. The green forms, 1 and 2, contain mononuclear square pyramidal molecules of the complex, while the orange form 3 consists of individual complexes stacked to give an infinite linear ⋯V=O⋯V=O⋯ chain. 1, which crystallizes as monoclinic in space group P21 with Z=4, has the cell parameters a=16.684(2), b=16.923(4), c=9.249(3) Å, β = 105.76(2)°, and V=2513(1) Å3. 2, which crystallizes as triclinic in space group P1 with Z=2, has the cell parameters a = 13.187(3), b = 13.469(3), c = 10.450(3) Å, α = 103.72(2), β = 103.20(3), γ = 63.03(2)°, and V = 1591.2(7) Å3. 3 crystallizes as triclinic in space group P1 with Z=2. The cell parameters are a = 13.300(3), b = 13.667(4), c = 7.551(1) Å, α = 90.44(2), β = 94.51(2), γ = 97.36(2)°, and V = 1357(1) Å3. The final R indices are R = 0.059 and RW = 0.062 for 1, R = 0.098 and RW = 0.090 for 2, and R = 0.053 and Rw = 0.042 for 3. The structural characteristics of these complexes are compared and discussed. 3 shows piezochromism (mechanochromism); its color changes from orange to green upon grinding. 1 and 2 turn orange when heated at 120 °C for a few minutes. The extent of conversion either by grinding or heating was studied by EXAFS (X-ray absorption fine structure) and IR spectroscopy. The orange crystals turn green when exposed to chloroform vapor, and the green crystals turn orange upon exposure to acetonitrile vapor.

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