Molecular Strands and Related Properties of Silver(I) Triflate with 3,3¡¯-Oxybispyridine vs 3,3¡¯-Thiobispyridine

Bulletin of the Korean chemical society

Ok-Sang Jung¹  Yun Ju Kim¹  Hee K. Chae¹  Young-A Lee¹  Ki-Min Park¹ 

关键词: Strands;    Coordination polymers;    Silver(I) complexes;    Bipyridines;    Anion exchange;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Studies on subtle spacer ligand effects of AgCF₃SO₃ with 3,3�?-Py₂X (X = O vs S) have been carried out. The reaction of AgCF₃SO₃ with 3,3�?-Py₂O and 3,3�?-Py₂S produces [Ag(CF₃SO₃)(3,3�?-Py₂O)] and [Ag(3,3�?-Py₂S)] (CF₃SO₃), respectively. Crystallographic characterization of [Ag(CF₃SO₃)(3,3�?-Py₂O)] (monoclinic P1, a =8.405(2) �?, b = 10.714(2) �?, c = 18.031(2) �?, �?= 77.36(2), �?= 107.83(2)�?, �?= 66.92(2), V = 1438.0(5) �?³ , Z =2,R = 0.0486) reveals that the skeletal structure is an anion-bridged double-strand. The double-strands are packed like a plywood. The framework of [Ag(3,3�?-Py₂S)](CF₃SO₃) (orthorhombic Pcab, a = 17.330(2) �?, b = 8.640(1) �?, c = 19.933(6) �?, V = 2985(1) �?³ , Z =8, R = 0.0437) is a sinusoidal single-strand. The formation of each coordination polymer appears to be primarily associated with the donating ability and the confor ma-tional energy barrier of the spacer ligands. Thermal analysesindicate that [Ag(CF₃SO₃)(3,3�?-Py₂O)] and [Ag(3,3�?-Py₂S)](CF₃SO₃) are stable up to 250 �? and 210 �?, respectively. For the anion exchangeability, the nature of the spacer ligand is more significant factor than the distance of silver(�?)···triflate.

【 授权许可】

Unknown