SYNTHESIS AND PROPERTIES OF DIAMINEPLATINUM(II) AND DIAMINEPLATINUM(IV) COMPLEXES INVOLVING CYCLOHEXYLIDENEMALONATE LIGAND

Authors
JUNG, CSLEE, SSKIM, KMJUNG, OSSOHN, YS
Issue Date
1995-10-20
Publisher
KOREAN CHEMICAL SOC
Citation
BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.16, no.10, pp.981 - 984
Abstract
New diamineplatinum(II) complexes of cyclohexylidenemalonate (chm) ligand, A(2)Pt(OOC)(2)C=C(CH2)(4)CH2 (1, A(2)=ethylenediamine (en); 2, A(2)=propylenediamine (pn); 3, A=NH3; 4, A=isopropylamine (ipa)) have been prepared. Their oxidation with H2O2 has led to the corresponding dihydroxoplatinum(IV) complexes: cis, cis, trans-A(2)Pt((OOC)2C=C (CH2)(4)CH2)(OH)(2) (5, A(2)=en; 6, A(2)=pn; 7, A=NH3; 8, A=ipa). The title complexes have been characterized by means of various spectroscopies and X-ray crystallography. 5 crystallizes in the monoclinic space group P2(1)/a (Z 4) with a=12.098(7) Angstrom, b=9.552(2) Angstrom, c 16.258(4) Angstrom, beta=98.03(5)degrees and V=1860(1) Angstrom.(3) The structure was refined to R=0.074. The local geometry around platinum atom is approximately octahedral with each hydroxide group in trans position. These platinum complexes are stable in aqueous solution. Pt(IV) complexes are readily reduced to the corresponding Pt(II) complexes by ascorbic acid.
Keywords
PLATINUM ANTICANCER DRUG; DNA; TETRAPLATIN; METABOLITE; REDUCTION; PRODUCTS; CRYSTAL; PLATINUM ANTICANCER DRUG; DNA; TETRAPLATIN; METABOLITE; REDUCTION; PRODUCTS; CRYSTAL
ISSN
0253-2964
URI
https://pubs.kist.re.kr/handle/201004/144949
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