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  • Title: Syntheses of 2,4-disubstituted 1,3,5-triazapentadienyl ligands having two guanidinato moieties and their use in the isolation of copper(I) complexes.
    Author: Zhou M, Li P, Tong H, Song Y, Gong T, Guo J, Weng L, Liu D.
    Journal: Inorg Chem; 2008 Mar 17; 47(6):1886-8. PubMed ID: 18278864.
    Abstract:
    2,4-N,N'-Disubstituted 1,3,5-triazapentadienyl ligands as their lithium salts [Li{(N(R)C(R'))2N}]2 [where R = SiMe3 here and hereafter and R' = dimethylamino (1) or 1-piperidino (2)] were synthesized via the reactions of LiN(SiMe3)2 with 2 equiv of the alpha-hydrogen-free carbonitrile dimethylcyanamide or 1-piperdinecarbonitrile and used in the isolation of the two-coordinate copper(I) complexes [Cu{(N(R)C(R'))2N}]2 [R' = dimethylamino (3) and 1-piperidino (4)]. Complex 2 features a twisted W-shaped ligand backbone in the solid state. Complexes 3 and 4 show an unusual 12-membered ring dinuclear copper( I) triazapentadienyl and a less expressed ability to form a stable delocalized triazapentadienyl system.
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