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Formation of Complex Ions

Formation of Complex Ions

A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...

Valence Bond Theory

Valence Bond Theory

Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...

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Updated: Oct 29, 2025

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions

Published on: July 30, 2017

単核パラジウム (I) アミド複合体

Jian Liu¹, Melissa M Bollmeyer², Yujeong Kim^3,4

¹State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.

Journal of the American Chemical Society

|July 7, 2021

まとめ

この要約は機械生成です。

研究者らは,触媒の重要な中間物質である新しいPalladium ((I)) amido複合体, [ ((BINAP) Pd ((NHAr^Trip) ]を分離した. この発見により,パラジウム化学とその触媒的応用に関する理解が進んでいます.

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Detection and Recovery of Palladium, Gold and Cobalt Metals from the Urban Mine Using Novel Sensors/Adsorbents Designated with Nanoscale Wagon-wheel-shaped Pores

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Published on: December 6, 2015

Mizoroki-Heck Cross-coupling Reactions Catalyzed by Dichloro{bis[1,1',1''-phosphinetriyltripiperidine]}palladium Under Mild Reaction Conditions

Mizoroki-Heck Cross-coupling Reactions Catalyzed by Dichloro{bis[1,1',1''-phosphinetriyltripiperidine]}palladium Under Mild Reaction Conditions

Published on: March 20, 2014

関連する実験動画

Last Updated: Oct 29, 2025

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions

Published on: July 30, 2017

Detection and Recovery of Palladium, Gold and Cobalt Metals from the Urban Mine Using Novel Sensors/Adsorbents Designated with Nanoscale Wagon-wheel-shaped Pores

Detection and Recovery of Palladium, Gold and Cobalt Metals from the Urban Mine Using Novel Sensors/Adsorbents Designated with Nanoscale Wagon-wheel-shaped Pores

Published on: December 6, 2015

Mizoroki-Heck Cross-coupling Reactions Catalyzed by Dichloro{bis[1,1',1''-phosphinetriyltripiperidine]}palladium Under Mild Reaction Conditions

Mizoroki-Heck Cross-coupling Reactions Catalyzed by Dichloro{bis[1,1',1''-phosphinetriyltripiperidine]}palladium Under Mild Reaction Conditions

Published on: March 20, 2014

科学分野:

有機金属化学
カタリシス
無機化学

背景:

単核パラジウム (I) 種は,パラジウム触媒反応における重要な,しかし十分に理解されていない中間物質である.
アクセシビリティが限られているため,これらの反応性種の詳細な研究が困難です.

研究の目的:

安定した単核パラジウム ((I) アミド複合体を分離し,特徴づけること.
Pd (I) アミド種の電子構造と結合を調査する.
新しいパラジウム複合体の反応性を調べる

主な方法:

(BINAP) PdCl₂とLiNHAr^Tripからパラジウム (I) アミド複合体 (BINAP) Pd (NHAr^Trip) を合成する.
X線結晶学,電子パラマグネティック共振 (EPR) と多端PdX線吸収スペクトロスコーピー (XAS) を用いた特徴化.
電子構造と結合相互作用を明らかにするための理論的計算.

主要な成果:

単核Pd(I) アミド複合体の分離と完全な特徴付けに成功しました.
X線結晶学で複合体の構造が明らかになった
配光学および理論的研究は,パウリ反発にもかかわらず,インターリガンド分散力によって影響された安定したPd-N結合を示した.

結論:

この研究は,以前は入手不可能なPd (I) アミドの中間物質への直接的なアクセスを提供しています.
この発見は,Pd (I) 種の安定化メカニズムについての洞察を提供します.
特徴づけられた複合体は,同解性Pd-N結合分裂とアミン脱プロトネーションを含む,その電子特性と一致する反応性を表している.