Two chromium(II) acetate complexes with N-heterocyclic carbene (NHC) coligands

Christian Heiser , Kurt Merzweiler , V. Jancik (Editor)
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引用次数: 0

Abstract

The crystal structures of two chromium(II) acetate complexes with N-heterocyclic carbene coligands were determined.

Tetra­kis(μ-acetato-κ2O:O′)bis­{[1,3-bis­(2,6-diiso­propyl­phen­yl)imidazol-2-yl­idene-κC2]chromium(II)} tetra­hydro­furan disolvate, [Cr2(C2H3O2)4(C27H36N4)2]·2C4H8O or [Cr2(OAc)4(IDipp)2]·2C4H8O (1), and tetra­kis­(μ-acetato-κ2O:O′)bis­{[1,3-bis­(2,4,6-tri­methyl­phen­yl)imidazol-2-yl­idene-κC2]chromium(II)},{Cr2(C2H3O2)4(C21H24N2)2] or [Cr2(OAc)4(IMes)2] (2), were synthesized from anhydrous chromium(II) acetate [Cr2(OAc)4] and the corresponding NHC (NHC = N-heterocyclic carbene) in toluene as solvent. Both complexes crystallize in the triclinic system, space group P

. The mol­ecular structures consist of Cr2(OAc)4 paddle-wheels that carry two terminal NHC ligands. This leads to a square-pyramidal coordination of the chromium atoms.

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两种含有 N-杂环碳烯 (NHC) 配体的醋酸铬(II)络合物。
四-双(μ-乙酰基-κ2 O:O')bis-{[1,3-bis-(2,6-diso-propyl-phen-yl)imidazol-2-yl-idene-κC 2]chromium(II)} tetra-hydro-furan disolvate、[Cr2(C2H3O2)4(C27H36N4)2]-2C4H8O或[Cr2(OAc)4(IDipp)2]-2C4H8O (1),以及四-双-(μ-乙酰基-κ2 O:O')bis-{[1,3-bis-(2,4,6-tri-methyl-phen-yl)imidazol-2-yl-idene-κC 2]chromium(II)},{Cr2(C2H3O2)4(C21H24N2)2] or [Cr2(OAc)4(IMes)2] (2),是由无水醋酸铬(II)[Cr2(OAc)4]和相应的 NHC(NHC = N-杂环碳烯)在甲苯溶剂中合成的。这两种复合物都在 P 空间群的三linic 系统中结晶。其分子结构由带有两个末端 NHC 配体的 Cr2(OAc)4 桨轮组成。这导致铬原子的方阵配位。
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来源期刊
CiteScore
1.90
自引率
0.00%
发文量
351
审稿时长
3 weeks
期刊介绍: Acta Crystallographica Section E: Crystallographic Communications is the IUCr''s open-access structural communications journal. It provides a fast, simple and easily accessible publication mechanism for crystal structure determinations of inorganic, metal-organic and organic compounds. The electronic submission, validation, refereeing and publication facilities of the journal ensure rapid and high-quality publication of fully validated structures. The primary article category is Research Communications; these are peer-reviewed articles describing one or more structure determinations with appropriate discussion of the science.
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