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Synthesis and X-ray Crystal Structure of Polymeric and Dimeric Copper(I) Cyanide Complexes Incorporating A Bicyclic Guanidine Ligand
journal contribution
posted on 2023-06-07, 21:20 authored by Martyn Coles, Peter B Hitchcock1,3,4,6,7,8-Hexahydro-2H-pyrimido[1,2-a]pyrimidine (hppH) reacts with copper(I) cyanide to afford the polymeric chain [(hppH)CuCN]¿ (1), consisting of distorted trigonal planar copper atoms linked by cyanide bridges. Attempts to isolate molecular species by repeating the reaction in the presence of triphenylphosphine gave a dimeric complex of the general formula [Cu2(CN)2(PPh3)4(hppH)] (2). The solid-state structure of 2 is consistent with a zwitterionic complex, comprising of [Cu(+)(PPh3)2(hppH)] and [Cu(¿)(CN)2(PPh3)2] metal centres, linked by a cyanide bridge. Variable temperature NMR studies suggest that the formation of higher oligomers may occur in solution at low temperature.
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Publication status
- Published
Journal
PolyhedronISSN
0277-5387External DOI
Issue
24-25Volume
20Page range
3027 - 3032Department affiliated with
- Chemistry Publications
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- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06Usage metrics
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