Two conformational polymorphs of (N,N-dibutyldithiocarbamato-κ2
S,S′)[tris(3,5-diphenylpyrazol-1-yl-κN
2)hydroborato]cobalt(II), [Co(C45H34BN6)(C9H18NS2)] or [TpPh2Co(S2CNBu2)], 1, are accessible by recrystallization from dichloromethane–methanol to give orthorhombic polymorph 1a, while slow evaporation from acetonitrile produces triclinic polymorph 1b. The two polymorphs have been characterized by IR spectroscopy and single-crystal X-ray crystallography at 150 K. Polymorphs 1a and 1b crystallize in the orthorhombic space group Pbca and the triclinic space group P-1, respectively. The polymorphs have a trans (1a) and cis (1b) orientation of the butyl groups with respect to the S2CN plane of the dithiocarbamate ligand, which results in an intermediate five-coordinate geometry for 1a and a square-pyramidal geometry for 1b. Hirshfeld surface analysis reveals minor differences between the two polymorphs, with 1a exhibiting stronger C—H...S interactions and 1b favouring C—H...π interactions.
(N,N-二丁基二硫代氨基甲酸-κ2)[三(3,5-二苯基吡唑-1-基-κN)
S,S′)[三(3,5-二苯基吡唑-1-基-κN
2)氢硼酸]钴(II),[Co(C45H34BN6)(C9H18NS2)] 或 [TpPh2Co(S2CNBu2)],1,可通过从二氯甲烷-甲醇中重结晶得到正菱形多晶体 1a,而从乙腈中缓慢蒸发则可得到三菱形多晶体 1b。红外光谱和单晶 X 射线晶体学对这两种多晶体进行了表征,其温度为 150 K。多晶型 1a 和 1b 分别在正交空间群 Pbca 和三菱空间群 P-1 中结晶。多晶型 1a 和 1b 的丁基相对于二硫代氨基甲酸配体的 S2CN 平面具有反式(1a)和顺式(1b)取向,这导致 1a 具有中间五配位几何形状,而 1b 具有方锥体几何形状。Hirshfeld 表面分析显示这两种多晶型之间存在细微差别,1a 表现出较强的 C-H...S 相互作用,而 1b 则偏向于 C-H...π 相互作用。