1H NMR, EPR, UV-Vis, and Electrochemical Studies of Imidazole Complexes of Ru(III). Crystal Structures of cis-[(Im)2(NH3)4RuIII]Br3 and [(1MeIm)6RuII]Cl2·2H2O

M. J. Clarke; V. M. Bailey; P. E. Doan; C. D. Hiller; K. J. LaChance-Galang; H. Daghlian; S. Mandal; C. M. Bastos; D. Lang

doi:10.1021/ic960355c

¹H NMR, EPR, UV-Vis, and Electrochemical Studies of Imidazole Complexes of Ru(III). Crystal Structures of cis-[(Im)₂(NH₃)₄Ru^III]Br₃ and [(1MeIm)₆Ru^II]Cl₂·2H₂O

M. J. Clarke^*, V. M. Bailey, P. E. Doan, C. D. Hiller, K. J. LaChance-Galang, H. Daghlian, S. Mandal, C. M. Bastos, D. Lang

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Abstract

Comparisons of the spectroscopic properties of a number of Ru^III complexes of imidazole ligands provide methods of distinguishing between various types of bonding that can occur in proteins and nucleic acids. In particular, EPR and ¹H NMR parameters arising from the paramagnetism of Ru^III should aid in determining binding sites of Ru^III drugs in macromolecules. Electrochemical studies on several imidazole complexes of ruthenium suggest that imidazole may serve as a significant π-acceptor ligand in the presence of anionic ligands. Crystal structures are reported on two active immunosuppressant complexes. cis-[(Im)₂(NH₃)₄Ru^III]Br₃ crystallizes in the triclinic space group P1̄ (No. 2) with the cell parameters a = 8.961(2) Å, b = 12.677(3) Å, c = 7.630(2) Å, α = 98.03- (2)°, β = 100.68(2)°, γ = 81.59(2)°, and Z = 2 (R = 0.044). [(1MeIm)₆Ru^II]Cl₂·2H₂O crystallizes in the monoclinic space group P2₁/n (No. 14) with the cell parameters a = 7.994(2) Å, b = 13.173(4) Å, c = 14.904(2) Å, β = 97.89(1)°, and Z = 2 (R = 0.052). The average Ru^II-N bond distance is 2.106(8) Å.

Original language	English (US)
Pages (from-to)	4896-4903
Number of pages	8
Journal	Inorganic chemistry
Volume	35
Issue number	17
DOIs	https://doi.org/10.1021/ic960355c
State	Published - 1996

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Inorganic Chemistry
Physical and Theoretical Chemistry

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Clarke, M. J., Bailey, V. M., Doan, P. E., Hiller, C. D., LaChance-Galang, K. J., Daghlian, H., Mandal, S., Bastos, C. M., & Lang, D. (1996). ¹H NMR, EPR, UV-Vis, and Electrochemical Studies of Imidazole Complexes of Ru(III). Crystal Structures of cis-[(Im)₂(NH₃)₄Ru^III]Br₃ and [(1MeIm)₆Ru^II]Cl₂·2H₂O. Inorganic chemistry, 35(17), 4896-4903. https://doi.org/10.1021/ic960355c

@article{7c7c59559a464a56895d1978a7be275c,

title = "1H NMR, EPR, UV-Vis, and Electrochemical Studies of Imidazole Complexes of Ru(III). Crystal Structures of cis-[(Im)2(NH3)4RuIII]Br3 and [(1MeIm)6RuII]Cl2·2H2O",

abstract = "Comparisons of the spectroscopic properties of a number of RuIII complexes of imidazole ligands provide methods of distinguishing between various types of bonding that can occur in proteins and nucleic acids. In particular, EPR and 1H NMR parameters arising from the paramagnetism of RuIII should aid in determining binding sites of RuIII drugs in macromolecules. Electrochemical studies on several imidazole complexes of ruthenium suggest that imidazole may serve as a significant π-acceptor ligand in the presence of anionic ligands. Crystal structures are reported on two active immunosuppressant complexes. cis-[(Im)2(NH3)4RuIII]Br3 crystallizes in the triclinic space group P{\=1} (No. 2) with the cell parameters a = 8.961(2) {\AA}, b = 12.677(3) {\AA}, c = 7.630(2) {\AA}, α = 98.03- (2)°, β = 100.68(2)°, γ = 81.59(2)°, and Z = 2 (R = 0.044). [(1MeIm)6RuII]Cl2·2H2O crystallizes in the monoclinic space group P21/n (No. 14) with the cell parameters a = 7.994(2) {\AA}, b = 13.173(4) {\AA}, c = 14.904(2) {\AA}, β = 97.89(1)°, and Z = 2 (R = 0.052). The average RuII-N bond distance is 2.106(8) {\AA}.",

author = "Clarke, {M. J.} and Bailey, {V. M.} and Doan, {P. E.} and Hiller, {C. D.} and LaChance-Galang, {K. J.} and H. Daghlian and S. Mandal and Bastos, {C. M.} and D. Lang",

year = "1996",

doi = "10.1021/ic960355c",

language = "English (US)",

volume = "35",

pages = "4896--4903",

journal = "Inorganic chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

number = "17",

}

TY - JOUR

T1 - 1H NMR, EPR, UV-Vis, and Electrochemical Studies of Imidazole Complexes of Ru(III). Crystal Structures of cis-[(Im)2(NH3)4RuIII]Br3 and [(1MeIm)6RuII]Cl2·2H2O

AU - Clarke, M. J.

AU - Bailey, V. M.

AU - Doan, P. E.

AU - Hiller, C. D.

AU - LaChance-Galang, K. J.

AU - Daghlian, H.

AU - Mandal, S.

AU - Bastos, C. M.

AU - Lang, D.

PY - 1996

Y1 - 1996

N2 - Comparisons of the spectroscopic properties of a number of RuIII complexes of imidazole ligands provide methods of distinguishing between various types of bonding that can occur in proteins and nucleic acids. In particular, EPR and 1H NMR parameters arising from the paramagnetism of RuIII should aid in determining binding sites of RuIII drugs in macromolecules. Electrochemical studies on several imidazole complexes of ruthenium suggest that imidazole may serve as a significant π-acceptor ligand in the presence of anionic ligands. Crystal structures are reported on two active immunosuppressant complexes. cis-[(Im)2(NH3)4RuIII]Br3 crystallizes in the triclinic space group P1̄ (No. 2) with the cell parameters a = 8.961(2) Å, b = 12.677(3) Å, c = 7.630(2) Å, α = 98.03- (2)°, β = 100.68(2)°, γ = 81.59(2)°, and Z = 2 (R = 0.044). [(1MeIm)6RuII]Cl2·2H2O crystallizes in the monoclinic space group P21/n (No. 14) with the cell parameters a = 7.994(2) Å, b = 13.173(4) Å, c = 14.904(2) Å, β = 97.89(1)°, and Z = 2 (R = 0.052). The average RuII-N bond distance is 2.106(8) Å.

AB - Comparisons of the spectroscopic properties of a number of RuIII complexes of imidazole ligands provide methods of distinguishing between various types of bonding that can occur in proteins and nucleic acids. In particular, EPR and 1H NMR parameters arising from the paramagnetism of RuIII should aid in determining binding sites of RuIII drugs in macromolecules. Electrochemical studies on several imidazole complexes of ruthenium suggest that imidazole may serve as a significant π-acceptor ligand in the presence of anionic ligands. Crystal structures are reported on two active immunosuppressant complexes. cis-[(Im)2(NH3)4RuIII]Br3 crystallizes in the triclinic space group P1̄ (No. 2) with the cell parameters a = 8.961(2) Å, b = 12.677(3) Å, c = 7.630(2) Å, α = 98.03- (2)°, β = 100.68(2)°, γ = 81.59(2)°, and Z = 2 (R = 0.044). [(1MeIm)6RuII]Cl2·2H2O crystallizes in the monoclinic space group P21/n (No. 14) with the cell parameters a = 7.994(2) Å, b = 13.173(4) Å, c = 14.904(2) Å, β = 97.89(1)°, and Z = 2 (R = 0.052). The average RuII-N bond distance is 2.106(8) Å.

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UR - http://www.scopus.com/inward/citedby.url?scp=0001663293&partnerID=8YFLogxK

U2 - 10.1021/ic960355c

DO - 10.1021/ic960355c

M3 - Article

C2 - 11666690

AN - SCOPUS:0001663293

SN - 0020-1669

VL - 35

SP - 4896

EP - 4903

JO - Inorganic chemistry

JF - Inorganic chemistry

IS - 17

ER -

¹H NMR, EPR, UV-Vis, and Electrochemical Studies of Imidazole Complexes of Ru(III). Crystal Structures of cis-[(Im)₂(NH₃)₄Ru^III]Br₃ and [(1MeIm)₆Ru^II]Cl₂·2H₂O

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