协调化合物和有机金属化合物之间的差异

Key Difference – Coordination CompoundVS有机金属化合物

Coordination compounds and organometallic compounds are complex compounds. Thekey difference在协调化合物和有机金属化合物之间coordination compounds contain协调共价键whereas organometallic compounds contain metal-carbon bonds.

配位化合物是复杂的化合物，该化合物由富含电子的分子或离子包围的金属离子组成。这些周围的组件称为配体。有机金属化合物是存在金属碳共价键的复杂化合物。如果至少存在一种金属碳键，则该化合物被认为是有机金属化合物。

内容

1.Overview and Key Difference
2.What is Coordination Compound
3.What is Organometallic Compound
4.Relationship Between Coordination Compound and Organometallic Compound
5.并排比较 - 协调化合物与表格形式的有机金属化合物
6。概括

What is Coordination Compound?

配位化合物是含有中央金属原子或离子的复杂化合物，这些化合物被富含电子分子或被称为配体的离子包围。这些配体通过坐标的共价键键入金属原子（或离子）。当将配体的孤独电子对捐赠给金属原子或金属离子的空D轨道时，形成坐标的共价键。大部分的时间，transition metal原子经历这种化合物形成，因为这些原子富含空的d原子轨道。

Coordination compounds can be neutral (Co(NH₃)Cl₃), positively charged ([Nd(H₂o）₉]³) or negatively charged ([UF₈]⁴）。带电的配位化合物也称为复合离子。不同的协调配合物具有不同的几何结构。协调化合物的几何形状取决于复合物的配位数。配位数是键合与中央金属原子或离子的配体数。

• Coordination number = 2 is the linear geometry
• Coordination number = 3 is the trigonal planar geometry
• 协调数= 4是四面体或方形平面几何形状
• Coordination number = 5 is the trigonal bipyramidal geometry
• Coordination number = 6 is the octahedral geometry
• Coordination number = 7 is the pentagonal bipyramidal geometry
• Coordination number = 8 is the square antiprismatic geometry

What is Organometallic Compound?

有机金属化合物是存在金属碳共价键的复杂化合物。These compounds have covalent bonds between the carbon and metal atoms. However, there are some exceptions as well; metal-cyano bonds are not considered as organometallic bonds. Metal carbonyl complexes are considered as organometallic compounds.

The metal involved in the formation of organometallic chemical bond can be analkali metal, alkaline earth metal, a transition metal or can be even a metalloid such as Boron. Some common examples for organometallic compounds are Grignard reagent containing either Lithium (Li) or Magnesium (Mg), ferrocene, tetracarbonyl nickel, etc. Boron is a metalloid, but it also forms organometallic compounds such as organoborane compounds.

有机金属化合物是亲核碳原子的良好来源。这是因为与碳相比，金属的电负性非常低。因此，金属原子可以通过向碳原子提供键电子来轻松形成阳离子。现在，碳原子富含电子，因此可以充当nucleophile。该碳亲核器可以攻击亲电碳原子并形成新的碳碳键。

What is the Relationship Between Coordination Compound and Organometallic Compound?

• Some coordination compounds contain metal ions surrounded by organic ligands. If these ligands are bound to the metal atom via heteroatoms such as oxygen and nitrogen, then the compound is considered as a coordination compound. But if there are direct bonds between carbon atoms and the metal atom, then it is considered as an organometallic compound.

Dif是什么ference Between Coordination Compound and Organometallic Compound?

协调化合物VS有机金属化合物
配位化合物是含有中央金属原子或离子的复杂化合物，这些化合物被富含电子分子或被称为配体的离子包围。	有机金属化合物是存在金属碳共价键的复杂化合物。
化学键合
Coordination compounds contain coordinate covalent bonds between metal atoms and ligands.	Organometallic compounds contain at least one metal-carbon covalent bond.
Components
配位化合物含有金属原子或离子和富含电子的配体。	有机金属化合物含有金属原子和分子的有机部分。
Colour
基于中央金属原子的氧化态，几乎所有的协调化合物都非常丰富多彩。	Organometallic compounds are not essentially colourful.

概括– Coordination CompoundVS有机金属化合物

Coordination compounds are complex compounds composed of a metal atom or a metal ion surrounded by electron-rich ligands. These ligands are bonded to the metal atom via coordinate covalent bonds. Organometallic compounds are complex compounds that have at least one Metal-Carbon bond. The difference between coordination compound and the organometallic compound is that coordination compounds contain coordinate covalent bonds whereas organometallic compounds contain metal-carbon bonds.

Reference:

1.“Coordination Compounds.” Chemistry LibreTexts, Libretexts, 19 Jan. 2018.Available here
2.“Organometallic Chemistry.” Wikipedia, Wikimedia Foundation, 27 Mar. 2018.Available here

Image Courtesy:

1.’Metal-Edta’by Smoke-Footdrivativative工作：Chamberlain2007（谈话） - Medta.png，（公共领域）通过Commons Wikimedia
2.'Ferrocene-2d'原始上传器是Benjah-bmm27在英语Wikipedia（公共领域）通过Commons Wikimedia