Molecular rearrangement accompanied by solid-state isomerization of {N,N'-di-3-ethoxysalicylidene-(R,S)(S,R)-1,2-diphenyl-1,2- ethanediamine}oxovanadium(IV)

Gakuse Hoshina, Shigeru Ohba, Kiyohiko Nakajima, Hiroyuki Ishida, Masaaki Kojima, Masanobu Tsuchimoto

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Two geometrical isomers, exo- and endo-[VO(3-EtOsal-meso-stien)] (H2(3- EtOsal-meso-stien)=N,N'-di-3-ethoxysalicylidene-(R,S)(S,R)-1,2-diphenyl-1,2- ethanediamine), were selectively prepared separately. X-Ray structure analyses were carded out for two different crystals of the endo-isomer: endo- [VO(3-EtOsal-meso-stien)] · 3H2O, (A), monoclinic P21/c, a = 10.435(3), b = 9.696(3), c = 30.948(3) Å, β = 94.87(2)°, V = 3120(1) Å3 and Z = 4; endo-[VO(3-EtOsal-mesostien)] · CH3CN, (B), monoclinic P21/c, a = 15.935(3), b = 9.510(2), c = 20.891(2) Å, β = 100.58(1)°, V = 3112(1) Å3 and Z = 4. Under an argon atmosphere, the endo-isomer in both crystals A and B isomerized to the exo-isomer completely upon heating at 210°C for 20 h. The X-ray powder diffraction patterns of the heated crystals A' and B' were approximately identical with that of exo-[VO(3-EtOsal-meso-stien)] · H2O (C). In the latter the V=O bonds are arranged in crystals to form a fairly weak linear chain structure (V=O ··· V=O ···). The drastic rearrangement of the metal complexes in the solid state accompanied by the isomerization reaction indicates that the thermal reaction proceeds in a non- topochemical fashion.

Original languageEnglish
Pages (from-to)1037-1041
Number of pages5
JournalBulletin of the Chemical Society of Japan
Volume72
Issue number5
DOIs
Publication statusPublished - May 1999

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Isomerization
Isomers
Crystals
Argon
Coordination Complexes
X ray powder diffraction
Diffraction patterns
Heating
X rays
oxovanadium IV
meso-1,2-diphenylethylenediamine

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Molecular rearrangement accompanied by solid-state isomerization of {N,N'-di-3-ethoxysalicylidene-(R,S)(S,R)-1,2-diphenyl-1,2- ethanediamine}oxovanadium(IV). / Hoshina, Gakuse; Ohba, Shigeru; Nakajima, Kiyohiko; Ishida, Hiroyuki; Kojima, Masaaki; Tsuchimoto, Masanobu.

In: Bulletin of the Chemical Society of Japan, Vol. 72, No. 5, 05.1999, p. 1037-1041.

Research output: Contribution to journalArticle

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title = "Molecular rearrangement accompanied by solid-state isomerization of {N,N'-di-3-ethoxysalicylidene-(R,S)(S,R)-1,2-diphenyl-1,2- ethanediamine}oxovanadium(IV)",
abstract = "Two geometrical isomers, exo- and endo-[VO(3-EtOsal-meso-stien)] (H2(3- EtOsal-meso-stien)=N,N'-di-3-ethoxysalicylidene-(R,S)(S,R)-1,2-diphenyl-1,2- ethanediamine), were selectively prepared separately. X-Ray structure analyses were carded out for two different crystals of the endo-isomer: endo- [VO(3-EtOsal-meso-stien)] · 3H2O, (A), monoclinic P21/c, a = 10.435(3), b = 9.696(3), c = 30.948(3) {\AA}, β = 94.87(2)°, V = 3120(1) {\AA}3 and Z = 4; endo-[VO(3-EtOsal-mesostien)] · CH3CN, (B), monoclinic P21/c, a = 15.935(3), b = 9.510(2), c = 20.891(2) {\AA}, β = 100.58(1)°, V = 3112(1) {\AA}3 and Z = 4. Under an argon atmosphere, the endo-isomer in both crystals A and B isomerized to the exo-isomer completely upon heating at 210°C for 20 h. The X-ray powder diffraction patterns of the heated crystals A' and B' were approximately identical with that of exo-[VO(3-EtOsal-meso-stien)] · H2O (C). In the latter the V=O bonds are arranged in crystals to form a fairly weak linear chain structure (V=O ··· V=O ···). The drastic rearrangement of the metal complexes in the solid state accompanied by the isomerization reaction indicates that the thermal reaction proceeds in a non- topochemical fashion.",
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T1 - Molecular rearrangement accompanied by solid-state isomerization of {N,N'-di-3-ethoxysalicylidene-(R,S)(S,R)-1,2-diphenyl-1,2- ethanediamine}oxovanadium(IV)

AU - Hoshina, Gakuse

AU - Ohba, Shigeru

AU - Nakajima, Kiyohiko

AU - Ishida, Hiroyuki

AU - Kojima, Masaaki

AU - Tsuchimoto, Masanobu

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N2 - Two geometrical isomers, exo- and endo-[VO(3-EtOsal-meso-stien)] (H2(3- EtOsal-meso-stien)=N,N'-di-3-ethoxysalicylidene-(R,S)(S,R)-1,2-diphenyl-1,2- ethanediamine), were selectively prepared separately. X-Ray structure analyses were carded out for two different crystals of the endo-isomer: endo- [VO(3-EtOsal-meso-stien)] · 3H2O, (A), monoclinic P21/c, a = 10.435(3), b = 9.696(3), c = 30.948(3) Å, β = 94.87(2)°, V = 3120(1) Å3 and Z = 4; endo-[VO(3-EtOsal-mesostien)] · CH3CN, (B), monoclinic P21/c, a = 15.935(3), b = 9.510(2), c = 20.891(2) Å, β = 100.58(1)°, V = 3112(1) Å3 and Z = 4. Under an argon atmosphere, the endo-isomer in both crystals A and B isomerized to the exo-isomer completely upon heating at 210°C for 20 h. The X-ray powder diffraction patterns of the heated crystals A' and B' were approximately identical with that of exo-[VO(3-EtOsal-meso-stien)] · H2O (C). In the latter the V=O bonds are arranged in crystals to form a fairly weak linear chain structure (V=O ··· V=O ···). The drastic rearrangement of the metal complexes in the solid state accompanied by the isomerization reaction indicates that the thermal reaction proceeds in a non- topochemical fashion.

AB - Two geometrical isomers, exo- and endo-[VO(3-EtOsal-meso-stien)] (H2(3- EtOsal-meso-stien)=N,N'-di-3-ethoxysalicylidene-(R,S)(S,R)-1,2-diphenyl-1,2- ethanediamine), were selectively prepared separately. X-Ray structure analyses were carded out for two different crystals of the endo-isomer: endo- [VO(3-EtOsal-meso-stien)] · 3H2O, (A), monoclinic P21/c, a = 10.435(3), b = 9.696(3), c = 30.948(3) Å, β = 94.87(2)°, V = 3120(1) Å3 and Z = 4; endo-[VO(3-EtOsal-mesostien)] · CH3CN, (B), monoclinic P21/c, a = 15.935(3), b = 9.510(2), c = 20.891(2) Å, β = 100.58(1)°, V = 3112(1) Å3 and Z = 4. Under an argon atmosphere, the endo-isomer in both crystals A and B isomerized to the exo-isomer completely upon heating at 210°C for 20 h. The X-ray powder diffraction patterns of the heated crystals A' and B' were approximately identical with that of exo-[VO(3-EtOsal-meso-stien)] · H2O (C). In the latter the V=O bonds are arranged in crystals to form a fairly weak linear chain structure (V=O ··· V=O ···). The drastic rearrangement of the metal complexes in the solid state accompanied by the isomerization reaction indicates that the thermal reaction proceeds in a non- topochemical fashion.

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