کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1301900 | 1498954 | 2013 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A series of bimetallic chain coordination polymers bearing [Ag(PPh3)2] chromophores: Synthesis, structure and luminescence A series of bimetallic chain coordination polymers bearing [Ag(PPh3)2] chromophores: Synthesis, structure and luminescence](/preview/png/1301900.png)
• Three cyanide-bridged univalent coinage metal polymeric chain compounds are presented.
• The AgI ions are coordinated by two bridging cyanide ions and two triphenylphosphane.
• Photoluminescence electronic transitions are attributed by DFT calculations to MMLCT.
A series of three cyanide-bridged chain coordination compounds with the formulae [M(CN)2(PPh3)2Ag]n (M is Ag, Cu or Au) is presented. The compounds have been prepared by room temperature reactions of triphenylphosphane with the cyanide salts of silver(I), copper(I) and gold(I). The compounds are characterised with IR, elemental analyses, SEM-EDX and X-ray powder diffraction, and the molecular structures were elucidated by single crystal X-ray diffraction. The three compounds are best described as one-dimensional cyanide-bridged chain coordination polymers, where the tetrahedral AgI ions are coordinated by 2 triphenylphosphane ligands and 2 cyanides, forming a AgN2P2 chromophore. The linear Ag(I), Cu(I) and Au(I) centers are in two-coordinate geometry with C-bound cyanides. No aurophilic or argentophilic interactions are observed, but in the lattice only C-H…π and C-H…M hydrogen bonds are present. The solid-state luminescence properties of the three compounds are discussed and assigned, in agreement with DFT calculations, to MMLCT.
Three cyanide-bridged univalent coinage metal polymeric chain compounds of the formulae [M(C = N)2(PPh3)2Ag]n are presented and its solid-state photoluminescence electronic transitions are attributed to MMLCT.Figure optionsDownload as PowerPoint slide
Journal: Inorganic Chemistry Communications - Volume 36, October 2013, Pages 18–21