The X-ray structure of bis(5,7-dimethyl-1,2,4-triazolo-[1,5α]pyrimidinium) hexachloroplatinate(IV) and spectroscopic properties of Pt(II) and Pt(IV) chloride complexes with 1,2,4-triazolo-[1,5α]-pyrimidines

被引：35

作者：

Szlyk, E

Pazderski, L

Lakomska, I

Surdykowski, A

Glowiak, T

Sitkowski, J

Kozerski, L

机构：

[1] Nicholas Copernicus Univ, Dept Chem, PL-87100 Torun, Poland

[2] Univ Wroclaw, Inst Chem, PL-50383 Wroclaw, Poland

[3] Drug Inst, PL-00725 Warsaw, Poland

来源：

POLYHEDRON | 2002年 / 21卷 / 03期

关键词：

platinum chloride complexes; X-ray structures; N-donor ligands; N-15; NMR; 1,2,4-triazolo-[1,5 alpha]-pyrimidines;

D O I：

10.1016/S0277-5387(01)01000-2

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Pt(II) and Pt(IV) chloride complexes with 1,2,4-triazolo-[1,5alpha]-pyrimidines: trans[Pt(tp)(2)Cl-2], trans-[Pt(dmtp)(2)Cl-2], trans[Pt(tp)(2)Cl-4] and trans-[Pt(dmtp)(2)Cl-4] where tp = 1,2,4-triazolo-[1,5alpha]-pyrimidine and dmtp = 5,7-dimethyl-1,2,4-triazolo-[1,5a]pyrimidine were synthesised and studied by H-1, C-13, N-15, Pt-195 NMR and IR spectroscopies. Significant N-15 NMR upfield coordination shifts (92-96 ppm) were observed for the N(3) atom indicating that this nitrogen is the metallation site. The X-ray structure of an ionic pair (dmtpH)(2)[PtCl6] {bis(5,7-dimethyl-1,2,4-triazolo-[1,5alpha]-pyrimidinium) hexachloroplatinate(IV)} was determined. exhibiting the presence of unique (dmtpH)(2)(2+) dimeric cations, protonated at N(3), N(3') atoms and linked by hydrogen bonding. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：343 / 348

页数：6

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