What is the chemical structure of Titanium, bis (2,6 - difluorophenyl) bis [ (1,2,3,4,5-.eta.) -1 - methyl - 2,4 - cyclopentadien - 1 - yl] -

The name of this compound is bis (2,6-difluorophenyl) bis [ (1,2,3,4,5 - η） - 1-methyl-2,4-cyclopentadiene-1-yl] titanium.

In terms of its chemical structure, it is centered on the titanium (Ti) atom. Surrounding the titanium atom, there are two (1,2,3,4,5 - η） - 1-methyl-2,4-cyclopentadiene-1-yl ligands. Five carbon atoms on the cyclopentadienyl group are connected to the titanium atom by η-coordination, with 1-methyl as the substituent on the cyclopentadienyl group. In addition, there are two 2,6-difluorophenyl ligands attached to the titanium atom. In the 2,6-difluorophenyl group, the 2 and 6 positions of the benzene ring are replaced by fluorine atoms, and the entire phenyl group forms a coordination bond with the titanium atom. In this way, through the combination of these ligands and titanium atoms, the unique chemical structure of the compound is constructed. The spatial arrangement of different groups and electronic effects will have a significant impact on the physical and chemical properties of the compound.

Titanium, bis (2,6 - difluorophenyl) bis [ (1,2,3,4,5-.eta.) -1 - methyl - 2,4 - cyclopentadien - 1 - yl] - What are the physical properties

Titanium, bis (2,6-difluorophenyl) bis [ (1,2,3,4,5 - η） - 1-methyl-2,4-cyclopentadiene-1-yl] This material has a variety of physical properties. Its appearance is often specific, or crystalline, with regular crystal form, unique optical properties, showing unique effects on light refraction and reflection, and may have potential applications in the field of optical instrument manufacturing.

In terms of solubility, it has a certain solubility in some organic solvents and can be soluble in specific non-polar organic solvents such as toluene. This property makes it possible to participate in the reaction as a homogeneous catalyst in organic synthesis reaction systems and promote chemical reactions.

Thermal stability is also worthy of attention. It can maintain structural stability within a certain temperature range. When the temperature rises to a certain critical value, the structure may change, which in turn affects its chemical activity and physical state. This indicates that its applicable conditions need to be carefully considered when applying in high temperature environments.

In addition, the compound has weak electrical conductivity and is similar to an insulator, which determines that it is difficult to act as a conductive material in the field of electricity, but there may be room for exploration in the development of insulating materials.

In short, the physical properties of titanium, bis (2,6-difluorophenyl) bis [ (1,2,3,4,5 - η） - 1-methyl-2,4-cyclopentadiene-1-yl] make it have the potential for exploration and application in many fields, and it needs to be further studied and developed according to its characteristics.

Titanium, bis (2,6 - difluorophenyl) bis [ (1,2,3,4,5-.eta.) -1 - methyl - 2,4 - cyclopentadien - 1 - yl] - What are the main application fields?

Titanium, bis (2,6-difluorophenyl) bis [ (1,2,3,4,5 - η） - 1-methyl-2,4-cyclopentadiene-1-yl] is a compound with a wide range of main application fields.

In the field of organic synthesis, this compound often acts as a catalyst. It exhibits excellent performance in catalyzing the polymerization of olefins. It can precisely regulate the microstructure of the polymer, such as controlling the molecular weight distribution of the polymer and its stereoregularity. With its unique electronic effect and steric resistance, it can achieve fine regulation of the active center of the polymerization reaction, so as to prepare polyolefin materials with specific properties, such as some new plastics with unique physical properties and processing properties, which can meet the strict requirements of high-end plastic products for material properties.

In the field of organometallic chemistry research, it is also a key research object. With the help of the study of this compound, scholars have deeply explored the interaction mechanism between metals and ligands, and clarified the influence of the electronic properties and spatial structure of ligands on the activity of metal centers. This not only helps to enrich the basic theory of organometallic chemistry, but also provides a key theoretical support for the design and synthesis of more efficient and highly selective new organometallic catalysts.

In the field of materials science, its application cannot be ignored. Using this compound as a precursor, through specific chemical reactions and processes, inorganic materials or composites with special properties can be prepared. For example, when preparing some materials with unique electrical and optical properties, this compound can be used as a starting material to participate in the construction process of the material, endowing the material with novel functional characteristics to meet the needs of high-performance materials in electronic devices, optical devices and other fields.

Titanium, bis (2,6 - difluorophenyl) bis [ (1,2,3,4,5-.eta.) -1 - methyl - 2,4 - cyclopentadien - 1 - yl] - What are the preparation methods

There are several methods for preparing bis (2,6-difluorophenyl) bis [ (1,2,3,4,5 - η） - 1-methyl-2,4-cyclopentadiene-1-yl] titanium.

First, react with a suitable cyclopentadiene derivative with a titanium source. Take 1-methyl-2,4-cyclopentadiene first, and after appropriate treatment, such as in a suitable solvent, react with a base to form a cyclopentadienyl negative ion. Bases, such as n-butyl lithium, can capture the active hydrogen of cyclopentadiene and cause the formation of negative ions. < Br >
In this negative ion system, titanium-containing compounds such as titanium tetrachloride are added. Titanium tetrachloride undergoes a nucleophilic substitution reaction with cyclopentadienyl negative ions, and titanium atoms are combined with cyclopentadienyl negative ions. Subsequently, 2,6-difluorophenyl corresponding reagents, such as 2,6-difluorophenyl halide, are added in the presence of a catalyst and react with the formed titanium-containing intermediate. After a series of reaction steps, 2,6-difluorophenyl is attached to the titanium atom to obtain the target product.

Second, a step-by-step synthesis strategy can also be used. The titanium complex containing 1-methyl-2,4-cyclopentadienyl group was synthesized first. Under specific reaction conditions, titanium was combined with cyclopentadienyl group to form a stable complex structure. After that, the complex was modified to introduce 2,6-difluorophenyl group. This introduction process, either by means of the reactivity of organometallic reagents, or by using specific chemical reaction mechanisms, such as nucleophilic addition, substitution, etc., achieves the purpose of connecting 2,6-difluorophenyl groups on titanium atoms, and finally obtains bis (2,6-difluorophenyl) bis [ (1,2,3,4,5 - η） - 1-methyl-2,4-cyclopentadiene-1-yl] titanium. During the synthesis process, attention should be paid to the control of reaction conditions, such as temperature, reaction time, reactant ratio, etc., which are all related to the purity and yield of the product.

Titanium, bis (2,6 - difluorophenyl) bis [ (1,2,3,4,5-.eta.) -1 - methyl - 2,4 - cyclopentadien - 1 - yl] - What are the characteristics in chemical reactions

Titanium (bis (2,6-difluorophenyl) bis [ (1,2,3,4,5-η) -1-methyl-2,4-cyclopentadiene-1-yl]) is unique in chemical reactions. This compound has a specific structure. Among the molecules, 2,6-difluorophenyl and (1,2,3,4,5-η) -1-methyl-2,4-cyclopentadiene-1-based ligands surround the center of titanium, and its spatial arrangement is exquisite, just like building a microscopic chemical "castle".

Because of its unique structure, it shines in the field of catalytic reactions. In many organic synthesis reactions, it is often used as a high-efficiency catalyst. Its catalytic activity is very high, which can greatly speed up the reaction process, just like installing an "accelerator" for the chemical reaction. For example, in the polymerization of olefins, it can precisely regulate the microstructure and molecular weight distribution of the polymer. This means that polymer materials with specific properties can be customized on demand, which contributes to the development of materials science.

Furthermore, this compound has special requirements for reaction conditions. It often needs to participate in the reaction in a more severe anhydrous and oxygen-free environment, like a picky "VIP". This is because the active center of titanium easily reacts with water and oxygen, which causes its structure and properties to change, which in turn affects its efficacy in the reaction.

In addition, its selectivity is also very significant. In complex multi-step reactions or systems with multiple competing reaction paths, it can be "precisely guided" to promote the reaction in a specific direction, generate the desired product, and greatly improve the efficiency and product purity of the reaction. It is of great significance in the field of fine chemical synthesis and helps to synthesize many high-value-added fine chemicals.