Facile synthesis and structural properties of (diamine)tetracarboxylatoplatinum(IV) complexes

Kwan Mook Kim; Young A. Lee; Sung Sil Lee; Youn Soo Sohn

doi:10.1016/S0020-1693(99)00169-3

Facile synthesis and structural properties of (diamine)tetracarboxylatoplatinum(IV) complexes

Kwan Mook Kim, Young A. Lee, Sung Sil Lee, Youn Soo Sohn

Department of Chemistry & Nanoscience

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

26 Scopus citations

Abstract

(Diamine)tetracarboxylatoplatinum(IV) complexes, A₂Pt(OOCR)₄ (A₂=trans-(±)-1,2-diaminocyclohexane (dach), 2,2-dimethyl-1,3-propanediamine (dmpda), ethylenediamine (en), 2 NH₃, 2 cyclopropylamine (cpa); R=CH₃, C₂H₅), have been facilely synthesized by reacting (diamine)tetrahydroxoplatinum(IV) with carboxylic anhydrides in dichloromethane, and their structural properties were examined by X-ray analysis and ¹H NMR spectroscopy. The reactant (dach)Pt(OH)₄ crystallizes in the triclinic space group P1̄ (No. 2) with two molecules in an asymmetric unit and the local geometry around the platinum(IV) atom is a regular octahedron, but the carboxylated product (dach)Pt(O₂CCH₃)₄ crystallizes in monoclinic space group P2₁/c (No. 14) and the platinum(IV) atom is in a distorted octahedral environment. The most interesting structural aspect of the title complexes is that the equatorial Pt(IV)-carboxylate bonds are slightly longer than the axial ones, probably due to the difference in trans influence of the nitrogen and oxygen donating atoms. The ¹H NMR spectra also show that the axial and equatorial acetate groups are not equivalent.

Original language	English
Pages (from-to)	52-56
Number of pages	5
Journal	Inorganica Chimica Acta
Volume	292
Issue number	1
DOIs	https://doi.org/10.1016/S0020-1693(99)00169-3
State	Published - 2 Sep 1999

Bibliographical note

Funding Information:
This research was financially supported by the Ministry of Science and Technology in Korea.

Keywords

Carboxylato complexes
Crystal structures
Diamine complexes
Platinum complexes

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10.1016/S0020-1693(99)00169-3

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title = "Facile synthesis and structural properties of (diamine)tetracarboxylatoplatinum(IV) complexes",

abstract = "(Diamine)tetracarboxylatoplatinum(IV) complexes, A2Pt(OOCR)4 (A2=trans-(±)-1,2-diaminocyclohexane (dach), 2,2-dimethyl-1,3-propanediamine (dmpda), ethylenediamine (en), 2 NH3, 2 cyclopropylamine (cpa); R=CH3, C2H5), have been facilely synthesized by reacting (diamine)tetrahydroxoplatinum(IV) with carboxylic anhydrides in dichloromethane, and their structural properties were examined by X-ray analysis and 1H NMR spectroscopy. The reactant (dach)Pt(OH)4 crystallizes in the triclinic space group P{\=1} (No. 2) with two molecules in an asymmetric unit and the local geometry around the platinum(IV) atom is a regular octahedron, but the carboxylated product (dach)Pt(O2CCH3)4 crystallizes in monoclinic space group P21/c (No. 14) and the platinum(IV) atom is in a distorted octahedral environment. The most interesting structural aspect of the title complexes is that the equatorial Pt(IV)-carboxylate bonds are slightly longer than the axial ones, probably due to the difference in trans influence of the nitrogen and oxygen donating atoms. The 1H NMR spectra also show that the axial and equatorial acetate groups are not equivalent.",

keywords = "Carboxylato complexes, Crystal structures, Diamine complexes, Platinum complexes",

author = "Kim, {Kwan Mook} and Lee, {Young A.} and Lee, {Sung Sil} and Sohn, {Youn Soo}",

note = "Funding Information: This research was financially supported by the Ministry of Science and Technology in Korea.",

year = "1999",

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doi = "10.1016/S0020-1693(99)00169-3",

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T1 - Facile synthesis and structural properties of (diamine)tetracarboxylatoplatinum(IV) complexes

AU - Kim, Kwan Mook

AU - Lee, Young A.

AU - Lee, Sung Sil

AU - Sohn, Youn Soo

N1 - Funding Information: This research was financially supported by the Ministry of Science and Technology in Korea.

PY - 1999/9/2

Y1 - 1999/9/2

N2 - (Diamine)tetracarboxylatoplatinum(IV) complexes, A2Pt(OOCR)4 (A2=trans-(±)-1,2-diaminocyclohexane (dach), 2,2-dimethyl-1,3-propanediamine (dmpda), ethylenediamine (en), 2 NH3, 2 cyclopropylamine (cpa); R=CH3, C2H5), have been facilely synthesized by reacting (diamine)tetrahydroxoplatinum(IV) with carboxylic anhydrides in dichloromethane, and their structural properties were examined by X-ray analysis and 1H NMR spectroscopy. The reactant (dach)Pt(OH)4 crystallizes in the triclinic space group P1̄ (No. 2) with two molecules in an asymmetric unit and the local geometry around the platinum(IV) atom is a regular octahedron, but the carboxylated product (dach)Pt(O2CCH3)4 crystallizes in monoclinic space group P21/c (No. 14) and the platinum(IV) atom is in a distorted octahedral environment. The most interesting structural aspect of the title complexes is that the equatorial Pt(IV)-carboxylate bonds are slightly longer than the axial ones, probably due to the difference in trans influence of the nitrogen and oxygen donating atoms. The 1H NMR spectra also show that the axial and equatorial acetate groups are not equivalent.

AB - (Diamine)tetracarboxylatoplatinum(IV) complexes, A2Pt(OOCR)4 (A2=trans-(±)-1,2-diaminocyclohexane (dach), 2,2-dimethyl-1,3-propanediamine (dmpda), ethylenediamine (en), 2 NH3, 2 cyclopropylamine (cpa); R=CH3, C2H5), have been facilely synthesized by reacting (diamine)tetrahydroxoplatinum(IV) with carboxylic anhydrides in dichloromethane, and their structural properties were examined by X-ray analysis and 1H NMR spectroscopy. The reactant (dach)Pt(OH)4 crystallizes in the triclinic space group P1̄ (No. 2) with two molecules in an asymmetric unit and the local geometry around the platinum(IV) atom is a regular octahedron, but the carboxylated product (dach)Pt(O2CCH3)4 crystallizes in monoclinic space group P21/c (No. 14) and the platinum(IV) atom is in a distorted octahedral environment. The most interesting structural aspect of the title complexes is that the equatorial Pt(IV)-carboxylate bonds are slightly longer than the axial ones, probably due to the difference in trans influence of the nitrogen and oxygen donating atoms. The 1H NMR spectra also show that the axial and equatorial acetate groups are not equivalent.

KW - Carboxylato complexes

KW - Crystal structures

KW - Diamine complexes

KW - Platinum complexes

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ER -

Facile synthesis and structural properties of (diamine)tetracarboxylatoplatinum(IV) complexes

Abstract

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Keywords

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