Abstract
Reaction of Ph3SnCl and K3[Cu(CN)4] with quinoxaline (qox) at room temperature affords the novel 3D-supramolecular coordination polymer (SCP) 3∞ [Cu2(CN)4·(Ph3Sn)2·qox], I, as the first example of the organotin-CuCN SCP containing the Ph3Sn fragment. The structure of I displays two Cu(CN)2 building blocks connected by a Ph3Sn cation and qox ligand creating the rhombic [Cu2(μ-CN)2] motif. The structure of I contains three different fused rings, the minicycle [Cu2(μ-CN)2], the 18-atomic [Cu4(Ph3Sn)2(CN)4(qox)2], and the 24-atomic [C8N8Cu4(Ph3Sn)4] rings, which create a non-interpenetrating 3D-network. These rings form a box-like structure with cavities suitable to accommodate bulky phenyl groups. SCP I belongs to the rapidly growing family of supramolecular assemblies containing the quite unusual [Cu2(μ-CN)2] motif, the repeated appearance of which raises the question whether cuprophilic interactions therein are the basic cause of the existence of I.
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Etaiw, S.Ed.H., Abdou, S.N.A. A Novel 3D-Supramolecular Coordination Polymer Based on CuCN, Ph3Sn Cation and Quinoxaline. J Inorg Organomet Polym 20, 622–627 (2010). https://doi.org/10.1007/s10904-010-9383-4
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DOI: https://doi.org/10.1007/s10904-010-9383-4