Novel β-enaminoamide zinc complexes were synthesized by reacting N,N-diethy-3-(isobutylamino)-2-butenamide (1) and N,N-dimethy-3-(isobutylamino)-2-butenamide (2), with diethylzinc to afford the desired zinc bis (β-enaminoamidate) complexes 3 and 4. Compounds 3 and 4 were recrystallized to afford high-quality single crystals which were characterized by single-crystal x-ray diffraction. Complex 3, [C24H46N4O2Zn], crystallized as monomer in the triclinic space group P-1 with cell parameters: a = 10.5405(8) Å, b = 10.7725(9) Å, c = 13.3097(11) Å, α = 104.806(7)°, β = 106.642(7)°, γ = 104.704(7)°, V = 1309.8(2) Å3, Z = 2. Complex 4, [C20H38N4O2Zn], also crystallized as a monomer in the monoclinic space group C with cell parameters: a = 17.0683(7) Å, b = 13.0259(3) Å, c = 11.5136(5) Å, α = γ = 90°, β = 116.400(5)°, V = 2292.86(15) Å3, Z = 4. The β-enaminoamide zinc complexes were obtained by reacting 2 equivalents of the appropriate free ligand with 1 equivalent of diethyl zinc to afford the desired β-enaminoamide zinc complex.

中文翻译：

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β-烯胺酰胺锌配合物的合成及结构表征

通过 N,N-二乙基-3-(异丁基氨基)-2-丁烯酰胺 (1) 和 N,N-二甲基-3-(异丁基氨基)-2-丁烯酰胺 (2) 与二乙基锌反应合成了新型 β-烯胺酰胺锌配合物得到所需的双（β-烯氨基酰胺酸锌）配合物 3 和 4。化合物 3 和 4 被重结晶，得到高质量的单晶，通过单晶 X 射线衍射表征。配合物 3，[C24H46N4O2Zn]，在三斜空间群 P-1 中结晶为单体，晶胞参数：a = 10.5405(8) Å，b = 10.7725(9) Å，c = 13.3097(11) Å，α = 104.806 7)°, β = 106.642(7)°, γ = 104.704(7)°, V = 1309.8(2) Å3, Z = 2. 配合物 4, [C20H38N4O2Zn], 也作为单体结晶在单斜空间群 C电池参数：a = 17.0683(7) Å, b = 13.0259(3) Å, c = 11.5136(5) Å, α = γ = 90°, β = 116.400(5)°, V = 2292.86(15) Å3 , Z = 4。