The CO release properties of κ2N1,N2 Mn(I) tricarbonyl photoCORMs with tridentate benzimidazole coligands,Inorganic Chemistry Frontiers

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The CO release properties of κ2N1,N2 Mn(I) tricarbonyl photoCORMs with tridentate benzimidazole coligands
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2017-08-01 00:00:00 , DOI: 10.1039/c7qi00390k
Ahmed M. Mansour _{1,

2,

3,

4,

5} , Alexandra Friedrich _{6,

7,

8,

9}

Affiliation

Fac-[MnBr(L^1,2-κ²N¹,N²)(CO)₃] and fac-[MnBr(L³)(CO)₃] (1–3) (2,6-bis(benzimidazole-2′-yl)pyridine (L¹), 2,6-bis(1-ethyl-benzimidazol-2′-yl)pyridine (L²) and 2-(2-pyridyl)benzimidazole (L³)), capable of CO release upon illumination at 468 nm, were synthesized and fully characterized, including the single crystal X-ray analysis of 1 and 2. The photoCORMs are stable in the dark in DMSO and aqueous buffer under the reducing properties of the myoglobin assay. The κ²N¹,N² bidentate mode of L^1,2 ligands changes into meridional, tridentate mode upon illumination as illustrated via solution NMR studies. The influence of the alkylation of benzimidazole ligand on the electronic structure was studied using time dependent density functional theory calculations.

中文翻译：

κ的CO释放性质² Ñ ¹，Ñ ²的Mn（我）三羰基photoCORMs具有三齿苯并咪唑共配

面式[MnBr（L ^1,2 -κ ² Ñ ¹，Ñ ²）（CO）₃ ]和FAC - [MnBr（L ³）（CO）₃ ]（1-3）（2,6-二（苯并咪唑-2'-基）吡啶（L ¹），2,6-双（1-乙基-苯并咪唑-2-2-基）吡啶（L ²）和2-（2-吡啶基）苯并咪唑（L ³））合成并充分表征了在468 nm照射下释放的CO的释放量，包括1和2的单晶X射线分析。在肌红蛋白测定的还原特性下，photoCORM在黑暗中在DMSO和水性缓冲液中稳定。κ² Ñ ¹， Ñ ² L的双齿方式^1,2所示照射时配位体的变化进子午，三齿模式经由溶液NMR研究。使用随时间变化的密度泛函理论计算研究了苯并咪唑配体的烷基化对电子结构的影响。

更新日期：2017-09-12

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