Bis-[cyclic(alkyl)(amino)carbene]-derived diradicals

被引：2

作者：

Nayak, Mithilesh Kumar ^{[1
]}

Elvers, Benedict J. ^{[2
]}

Mehta, Sakshi ^{[3
]}

Krummenacher, Ivo ^{[4
,5
]}

Mondal, Abhishake ^{[3
]}

Braunschweig, Holger ^{[4
,5
]}

Schulzke, Carola ^{[2
]}

Ravat, Prince ^{[6
]}

Jana, Anukul ^{[1
]}

机构：

[1] Tata Inst Fundamental Res Hyderabad, Hyderabad 500107, India

[2] Univ Greifswald, Inst Biochem, Felix Hausdorff Str 4, D-17489 Greifswald, Germany

[3] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, India

[4] Julius Maximilians Univ Wurzburg, Inst Inorgan Chem, D-97074 Wurzburg, Germany

[5] Julius Maximilians Univ Wurzburg, Inst Sustainable Chem & Catalysis Boron, D-97074 Wurzburg, Germany

[6] Univ Wurzburg, Inst Organ Chem, D-97074 Hubland, Germany

来源：

CHEMICAL COMMUNICATIONS | 2024年 / 60卷 / 13期

关键词：

CYCLIC (ALKYL)(AMINO)CARBENES CAACS; RADICALS; CARBENES; TRANSITION; BIRADICALS; ACCESS; BONDS;

D O I：

10.1039/d3cc05779h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Crystalline polymeric structures of trans-1,4-cyclohexylene bridged N-tethered bis-CAACs in the form of their LiOTf adducts were synthesized and isolated. These were further used as building blocks for the synthesis of crystalline (amino)(carboxy)-based diradicals. The triplet diradical character of these compounds was unambiguously confirmed by the presence of a half-field signal in their EPR spectra. Theoretical calculations show that the singlet state is marginally more stable than the triplet state. Crystalline (amino)(carboxy)-based diradicals were synthesized from newly designed N,N '-trans-1,4-cyclohexylene bridged bis-CAACs. A half-field EPR signal unambiguously confirms their triplet diradical character.

引用

页码：1739 / 1742

页数：4

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