当前位置：
X-MOL 学术
›
Dalton Trans.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
A series of (E)-1,2-diaryldigermenes incorporating bulky Eind groups: structural characteristics and absorption properties
Dalton Transactions ( IF 3.5 ) Pub Date : 2022-11-23 , DOI: 10.1039/d2dt03427a Shogo Yagura 1 , Naoki Hayakawa 1 , Airi Kuroda 1 , Kei Ota 1 , Rhota Tanishita 1 , Genya Urasaki 1 , Tsukasa Nakahodo 1 , Hidetaka Nakai 1 , Manabu Hoshino 2 , Daisuke Hashizume 2 , Tsukasa Matsuo 1
Dalton Transactions ( IF 3.5 ) Pub Date : 2022-11-23 , DOI: 10.1039/d2dt03427a Shogo Yagura 1 , Naoki Hayakawa 1 , Airi Kuroda 1 , Kei Ota 1 , Rhota Tanishita 1 , Genya Urasaki 1 , Tsukasa Nakahodo 1 , Hidetaka Nakai 1 , Manabu Hoshino 2 , Daisuke Hashizume 2 , Tsukasa Matsuo 1
Affiliation
|
A series of (E)-1,2-diaryldigermenes, (Eind)ArGe![[double bond, length as m-dash]](https://www.rsc.org/images/entities/char_e001.gif)
GeAr(Eind) [Ar = phenyl (2), thiophen-2-yl (3), 9,9-dimethyl-2-fluorenyl (4) and 2,2′-bithiophen-5-yl (5)], supported by the fused-ring bulky 1,1,3,3,5,5,7,7-octaethyl-s-hydrindacen-4-yl (Eind) groups, have been obtained as yellow-orange to red crystalline solids by the reaction of 1,2-dibromodigermene, (Eind)BrGeGeBr(Eind) (1), with ArLi. In the crystals of 2–5, the digermene cores show a flexible nature adopting a trans-bent geometry with the trans-bent angles (θ) between the Ge–Ge vector and the CEind–Ge–CAr plane of 34.04(12)° (2), 38.3(3)° and 38.8(3)° (3), 33.69(12)° (4) and 39.30(13)° (5). In the UV-vis spectra, strong π–π* absorptions have been observed with an absorption maximum at 451 nm (ε = 1.3 × 104) (2), 455 nm (ε = 9.7 × 103) (3), 480 nm (ε = 1.3 × 104) (4) and 497 nm (ε = 1.4 × 104) (5), retaining the GeGe double bond in solution. The absorption data and DFT calculations provide evidence for the intrinsic π-conjugation between the GeGe chromophore and aromatic rings involving the narrowing of the HOMO–LUMO gaps (ΔE) with the extension of the carbon π-electron systems.
中文翻译：
一系列包含庞大 Eind 基团的 (E)-1,2-diaryldigermenes：结构特征和吸收特性
一系列 ( E )-1,2-diaryldigermenes, (Eind)ArGeGeAr(Eind) [Ar = 苯基 ( 2 ), thiophen-2-yl ( 3 ), 9,9-dimethyl-2-fluorenyl ( 4 )和 2,2'-联噻吩-5-基 ( 5 )]，由稠环大体积1,1,3,3,5,5,7,7-octaethyl- s -hydrindacen-4-yl (Eind ) 基团，已通过 1,2-二溴二锗烯 (Eind)BrGe GeBr(Eind) ( 1 ) 与 ArLi 的反应获得橙黄色至红色结晶固体。在2-5的晶体中，双锗烯核显示出灵活的性质，采用具有反式角度的反式几何形状（θ) 在 Ge-Ge 矢量和34.04(12)° ( 2 )、38.3(3)° 和 38.8(3)° ( 3 )、33.69(12)° ( 4 )的 C Eind –Ge –C Ar平面之间和 39.30(13)° ( 5 )。在紫外-可见光谱中，已观察到强 π–π* 吸收，吸收最大值位于 451 nm ( ε = 1.3 × 10 4 ) ( 2 ), 455 nm ( ε = 9.7 × 10 3 ) ( 3 ), 480 nm ( ε = 1.3 × 10 4 ) ( 4 ) 和 497 nm ( ε = 1.4 × 10 4 ) ( 5 )，保留 Ge溶液中的Ge双键。吸收数据和 DFT 计算为 Ge Ge 发色团和芳环之间的固有 π 共轭提供了证据，涉及 HOMO-LUMO 间隙 (Δ E ) 的缩小以及碳 π 电子系统的扩展。
更新日期：2022-11-23
GeAr(Eind) [Ar = phenyl (2), thiophen-2-yl (3), 9,9-dimethyl-2-fluorenyl (4) and 2,2′-bithiophen-5-yl (5)], supported by the fused-ring bulky 1,1,3,3,5,5,7,7-octaethyl-s-hydrindacen-4-yl (Eind) groups, have been obtained as yellow-orange to red crystalline solids by the reaction of 1,2-dibromodigermene, (Eind)BrGeGeBr(Eind) (1), with ArLi. In the crystals of 2–5, the digermene cores show a flexible nature adopting a trans-bent geometry with the trans-bent angles (θ) between the Ge–Ge vector and the CEind–Ge–CAr plane of 34.04(12)° (2), 38.3(3)° and 38.8(3)° (3), 33.69(12)° (4) and 39.30(13)° (5). In the UV-vis spectra, strong π–π* absorptions have been observed with an absorption maximum at 451 nm (ε = 1.3 × 104) (2), 455 nm (ε = 9.7 × 103) (3), 480 nm (ε = 1.3 × 104) (4) and 497 nm (ε = 1.4 × 104) (5), retaining the GeGe double bond in solution. The absorption data and DFT calculations provide evidence for the intrinsic π-conjugation between the GeGe chromophore and aromatic rings involving the narrowing of the HOMO–LUMO gaps (ΔE) with the extension of the carbon π-electron systems.
中文翻译：
一系列包含庞大 Eind 基团的 (E)-1,2-diaryldigermenes：结构特征和吸收特性
一系列 ( E )-1,2-diaryldigermenes, (Eind)ArGe
GeAr(Eind) [Ar = 苯基 ( 2 ), thiophen-2-yl ( 3 ), 9,9-dimethyl-2-fluorenyl ( 4 )和 2,2'-联噻吩-5-基 ( 5 )]，由稠环大体积1,1,3,3,5,5,7,7-octaethyl- s -hydrindacen-4-yl (Eind ) 基团，已通过 1,2-二溴二锗烯 (Eind)BrGe GeBr(Eind) ( 1 ) 与 ArLi 的反应获得橙黄色至红色结晶固体。在2-5的晶体中，双锗烯核显示出灵活的性质，采用具有反式角度的反式几何形状（θ) 在 Ge-Ge 矢量和34.04(12)° ( 2 )、38.3(3)° 和 38.8(3)° ( 3 )、33.69(12)° ( 4 )的 C Eind –Ge –C Ar平面之间和 39.30(13)° ( 5 )。在紫外-可见光谱中，已观察到强 π–π* 吸收，吸收最大值位于 451 nm ( ε = 1.3 × 10 4 ) ( 2 ), 455 nm ( ε = 9.7 × 10 3 ) ( 3 ), 480 nm ( ε = 1.3 × 10 4 ) ( 4 ) 和 497 nm ( ε = 1.4 × 10 4 ) ( 5 )，保留 Ge溶液中的Ge双键。吸收数据和 DFT 计算为 Ge Ge 发色团和芳环之间的固有 π 共轭提供了证据，涉及 HOMO-LUMO 间隙 (Δ E ) 的缩小以及碳 π 电子系统的扩展。
京公网安备 11010802027423号