Synthesis and Characterization of Group 11 1,1,3,3-Tetraalkylguanidinate (TAG) Clusters: [M2(μ-TAG){μ-N(SiMe3)2}]2 (M = Cu, Ag, and Au)
Posted on 2009-03-16 - 00:00
The addition of diethylcyanamide to a tetrahydrofuran solution of lithium dialkylamide {LiN(CH3)2 or LiNCH2CH2CH2CH2, Li(PYR)} results in the corresponding lithium 1,1,3,3-tetraalkylguanidinate, Li(TAG). Two equivalents of Li(TAG) and 2 equiv of lithium bistrimethylsilylamide, LiN(SiMe3)2, were subsequently reacted with 4 equiv of Group 11 halide (CuCl, AgBr, and AuCl) to generate tetranuclear complexes with the general formula [M2(μ-TAG){μ-N(SiMe3)2}]2 where M and TAG = {Cu, DEDMG, (1)}, {Ag, DEDMG, (2)}, {Au, DEDMG, (3)}, {Cu, DEPYRG, (4)}, {Ag, DEPYRG, (5)}, and {Au, DEPYRG, (6)}. Compounds 1−6 were characterized by single-crystal X-ray diffraction. The bulk powders for all complexes were found to be in agreement with the crystal structures based on elemental analyses, FT-IR spectroscopy, 1H and 13C NMR studies.
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Bunge, Scott D.; Steele, Jennifer L. (2016). Synthesis and Characterization of Group 11 1,1,3,3-Tetraalkylguanidinate (TAG) Clusters: [M2(μ-TAG){μ-N(SiMe3)2}]2 (M = Cu, Ag, and Au). ACS Publications. Collection. https://doi.org/10.1021/ic802291u
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