Detail of "15978-93-5"

Reference

Spectrophotometric study of kinetics of platinum(II) diacidodiammine isomerization in aqueous solutions

Spectrophotometric study of kinetics of platinum(II) diacidodiammine isomerization in aqueous solutions. Spitsyn, V. I.; Kileev, R. G.; Zheligovskaya, N. N. (Mosk. Gos. Univ., Moscow, USSR). Vestn. Mosk. Univ., Khim., 17(5), 560-4 (Russian) 1976. CODEN: VMUKA5. DOCUMENT TYPE: Journal CA Section: 67 (Catalysis and Reaction Kinetics) Section cross-reference(s): 78 The 1st order rate consts. for isomerization of cis-Pt(NH3)2X2 (X = Br, I) at 20-80.degree. are [(5. 15978-91-3 and 15978-93-5 are cas registry numbers. These chemicals are also mentioned in this article.6 .+-. 0.5) .times. 10-5]-[(6.4 .+-. 0.3) .times. 10-3] and [(1.6 .+-. 0.6) .times. 10-4]-[(1.1 .+-. 0.3) .times. 10-2], resp. The activation parameters are: .DELTA.Ea 14.36 .+-. 0.16, 12.2 .+-. 0.2 kcal/mol; .DELTA.H* 13.76 .+-. 0.20, 11.6 .+-. 0.3 kcal/mol; .DELTA.S* -38.00 .+-. 0.15, -44 .+-. 0.2 entropy units, resp. The strong trans influence of the acido ligands results in an intermediate with dissocd. NH3 ligands (indicated by higher pH of cis-complex solns. compared to trans-complexes). Rearrangement gives the trans-complex. .

Improved preparation of intermediate of cisplatin-diiododiammineplatinum

Improved preparation of intermediate of cisplatin-diiododiammineplatinum.Some chemicals with cas registry numbers like 10025-99-7 and 15978-93-5 are also used. Guo, Taisheng (Qilu Pharm. Fact., Jinan 250100, Peop. Rep. China). Zhongguo Yiyao Gongye Zazhi, 22(7), 322-3 (Chinese) 1991. CODEN: ZYGZEA. ISSN: 1001-8255. DOCUMENT TYPE: Journal CA Section: 78 (Inorganic Chemicals and Reactions) Prepn. of intermediate of cis-Pt(NH3)2I2 (398% yield) was improved by gradual addn. of acidified N2H4.H2O soln. to aq. K2PtCl4 soln. with subsequent reaction with KI. .