ALKALI NUCLEOBASE INTERACTIONS - INVOLVEMENT OF EXOCYCLIC OXYGENS OF 1-METHYLURACIL AND 1-METHYLTHYMINE IN NA+ BINDING

被引：33
作者：
FISCHER, B
PREUT, H
LIPPERT, B
SCHOLLHORN, H
THEWALT, U
机构：
[1] UNIV DORTMUND,FACHBEREICH CHEM,W-4600 DORTMUND,GERMANY
[2] UNIV ULM,SEKT RONTGEN & ELEKTRONENBEUGUNG,W-7900 ULM,GERMANY
来源：
POLYHEDRON | 1990年 / 9卷 / 18期
关键词：
D O I：
10.1016/S0277-5387(00)86942-9
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Co-crystallization of Na[AuCl4] with 1-methyluracil, C5H6N2O2 (1-MeUH), and 1-methylthymine, C6H8N2O2 (1-MeTH), at pH 0.8 yields predominently salts of composition [Na(1-MeUH)4][AuCl4] (1) and [Na(1-MeTH)(H2O)4][AUCl4]·1-MeTH·2H2O (2). Both 1 and 2 crystallize in space group P1 with cell dimensions a = 10.531(3), 1, 8.436(5), 2; b = 9.194(3), 1, 10.521(7), 2; c = 7.924(2), 1, 15.917(11) Å, 2; α = 96.68(3), 1, 102.61(5), 2; β = 85.09(3), 1, 90.45(5), 2; γ = 103.88(3), 1, 108.10(5)°, 2; U = 738.4, 1, 1306(2) Å3, 2; Z = 1, 1, 2, 2. Na+ binding to 1-MeUH is through O(4) in 1 and O(2) in 2. The packing of cations and anions in 1 is special in that infinite stacks of alternating [Na(1-MeUH)4]+ and [AuCl4]- are formed with the metals 3.962(1) Å apart. © 1990.
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页码：2199 / 2204
页数：6
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