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.
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收藏
页码：343 / 348
页数：6
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