SYNTHESIS OF 1,10-DITHIA-4,7,13,16-TETRA-AZACYCLO-OCTADECANE, 1-AZA-4,7-DITHIACYCLONONANE, AND N,N'-1,2-BIS(1-AZA-4,7-DITHIACYCLONONYL)ETHANE - STRUCTURAL AND SOLUTION STUDIES OF THEIR SILVER COMPLEXES

被引:79
作者
CRAIG, AS
KATAKY, R
MATTHEWS, RC
PARKER, D
FERGUSON, G
LOUGH, A
ADAMS, H
BAILEY, N
SCHNEIDER, H
机构
[1] UNIV DURHAM,DEPT CHEM,S RD,DURHAM DH1 3LE,ENGLAND
[2] UNIV GUELPH,DEPT CHEM,GUELPH N1G 2W1,ONTARIO,CANADA
[3] UNIV SHEFFIELD,DEPT CHEM,SHEFFIELD S3 7HF,S YORKSHIRE,ENGLAND
[4] MAX PLANCK INST BIOPHYS CHEM,W-3400 GOTTINGEN,GERMANY
来源
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 | 1990年 / 09期
关键词
D O I
10.1039/p29900001523
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The synthesis of the ligands 1-aza-4,7-dithiacyclononane, N,N′-1,2-bis(1-aza-4,7-dithiacyclononyl)ethane, and 1,10-dithia-4,7,13,16- tetra-azacyclo-octadecane and their silver(I) complexes are reported. Stability constants in water and methanol have been determined using pH-metric methods, and enthalpies of complexation measured calorimetrically in methanol. The N-alkyl derivatives show enhanced enthalpies of complexation, but exhibit unfavourable entropies of complexation. Crystal structures of the [18]-N 4S2 and bis[9]-NS2 silver complexes reveal distorted octahedral co-ordination geometry, although in aqueous solution the bis[9]-NS2 silver complex does not adopt the sandwich structure revealed in the crystallographic analysis.
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页码:1523 / 1531
页数:9
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