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What is the chemical structure of 4-iodibenzo [b, d] thiophene?
The [b, d] boron-nitrogen compounds formed by boron-nitrogen are interesting in their transformation. For boron, the atomic number is five, and the outer particle has three; for nitrogen, the atomic number is seven, and the outer particle has five.
The difference between boron-nitrogen compounds is often found in the allotropic shape of carbon. Take hexagonal boron-nitrogen as an example, it is similar to graphite. Boron-nitrogen atoms interact to form a hexagonal plane. Each boron atom is formed by a total of three nitrogen atoms, and each nitrogen atom is also formed by a total of three boron atoms. This combination method makes the plane atoms very solid.
, Weak world-force interaction. Therefore, hexagonal boron nitrogen is graphite-like and has a certain slippery property, which can be used as a slippery material.
cubic boron nitrogen is similar to gold stone. Boron atoms are located in the center of the four sides, and nitrogen atoms are located in the four sides, and vice versa. Boron and nitrogen atoms are joined together to form a hard and fixed position. This makes the cubic boron nitrogen hardness high, which is second to gold stone, and can be used in cutting, grinding, etc.
, the reduction of boron nitrogen compounds [b, d], or in the form of gold, are all due to their atomic properties and combination methods. It exhibits special physicalization properties, which are important in materials science and other aspects.
What are the main physical properties of 4-iododibenzo [b, d] thiophene?
The lead-mercury mixture [b, d] is a common product used in the Dan family. Its main physical properties are as follows:
Lead, heavy in quality and heavy in nature. "Tiangong Kaiwu" says: "Where lead is heavy in quality and heavy in nature." The color of lead is silver and dark in color, often lumpy, and its surface is left in the air for a long time, prone to a dark film. The melting point of lead is quite low, about 327 degrees Celsius. It is easy to melt into a liquid when heated, and has good development. It can be hammered into thin sheets. Its density is very high, and it feels heavy.
Mercury, commonly known as mercury, is liquid at room temperature and is the only liquid metal. "Tiangong Kaiwu" talks about the characteristics of mercury: "Its shape is like mercury, so it is called mercury." Mercury is silvery white in color, bright and dazzling, and has excellent fluidity. It rolls like a bead on a flat surface, making it difficult to grasp. Its density is also high, insoluble in water, and can form amalgamates with many metals. The boiling point of mercury is 356.7 degrees Celsius, and it is volatile when heated. Mercury vapor is toxic.
Lead-mercury mixture [b, d], which has some properties of both. Its density is still relatively large, and its appearance may vary depending on the proportion of the two, or it may be a silvery white liquid or a semi-solid state under certain conditions. Under the influence of chemical properties, its physical properties may also change, such as melting point, fluidity, etc. During the refining process of medicinal pills, the change of its physical properties has a great impact on the formation of medicinal pills. The alchemist needs to be carefully controlled during the refining process. According to the characteristics of its physical properties, control the temperature, ratio and other factors in order to refine the ideal medicinal pill.
In what fields is 4-iodibenzo [b, d] thiophene used?
"Tiangong Kaiwu" says: "The saltpeter and sulfur are the essence of yin, and they are poisonous. When it is extinguished by fire, it must be sent by yang medicine." The black powder is made of saltpeter, sulfur, and charcoal. The combination of these three, when burned, will explode, and the power is amazing.
The application of black powder [b, d] was mostly used in warfare in ancient times. On the battlefield, using gunpowder to make firecrackers and artillery can startle the enemy's horses and disrupt the enemy's formation. When siege, fire and artillery bombard the city, the city walls are shaken, and the enemy is terrified.
Furthermore, during festivals, it is also used. During the holidays, firecrackers are set off, making a loud sound to drive away evil and add joy to the atmosphere of celebration. The fireworks are bright and the spectators are happy.
And among the people, there are also people who use black powder as a guide to make fireworks. Fireworks bloom in colorful colors, painting magnificent scenes in the night sky for people to watch and entertain.
It can be seen that black powder [b, d] has applications in wars, festivals, entertainment and many other fields. It is a great invention of ancient times and has far-reaching influence.
What are the synthesis methods of 4-iododibenzo [b, d] thiophene?
If you want to forge the sword of "b" and "d" together, there are many methods, all of which depend on ingenuity and fine craftsmanship.
The first to be selected as a good material, the iron needs to be pure in texture and contain less impurities. This is the foundation of the sword. Good iron is like the iron of ancient Kunwu, which is incomparably tough and can make the blade sharp and not easy to break. To choose a good material, you need to go through thousands of tempering. Put the iron in the fire, calcine it with fierce fire, wait for it to be as red as a glow, take it out and place it on the anvil, and the craftsman will beat it repeatedly with a sledgehammer. The strength of beating needs to be both rigid and soft, and the impurities should be removed with a heavy blow, and the quality should be tapped evenly. This process requires patience and perseverance, just like the ancients who cast
The control of the heat is also the key. If the fire is small, the iron is not melted through and the texture is uneven; if the fire is large, the iron is easy to overburn and destroy its toughness. When the warm fire is slowly baked, the iron is gradually melted, and then the fire is used to urge the melting. It is just right to observe the state of the liquid iron, such as gold waves surging, and the color is translucent.
When casting, the mold needs to be carefully made. The shape of the mold is related to the state of the sword, the "b" and "d" swords, or there may be unique curves and shapes, and the mold must be accurate. Slowly inject the melted liquid iron into the mold, and the action needs to be stable. If the liquid iron is poured, all previous efforts will be wasted. When the liquid iron cools and solidifies, carefully take out the first-
However, the sword still needs to be sharpened at the beginning. With stones of different thicknesses, the blade should be polished in turn. First, the burrs should be roughly removed and the shape should be adjusted, and then the fine grinding should make it smooth like a mirror, with cold light flashing. When grinding, you need to follow its texture and use even force to make the blade flat and sharp.
The method of quenching is also indispensable. Reheat the sharpened sword to a specific temperature, quickly immerse it in water or oil, and the sudden cold will increase the hardness of the sword body. The quenching liquid, temperature and time need to be precisely grasped, such as the quenching of Longquan Sword. With the unique water of the local area, the time should be controlled according to the ancient method, so that the sword is hard and soft.
In this way, after selecting materials, tempering, casting, grinding, hardening and many other processes, and doing it with care, you can get the "b" and "d" combined sword, which is both beautiful and practical, just like the ancient famous sword, carrying the wisdom and hard work of craftsmen.
What are the market prospects for 4-iodibenzo [b, d] thiophene?
Looking at [b, d] the scene of the two cities today is really complicated and unpredictable. Its prospects are not only bright and bright, but also contain hidden opportunities.
At the moment, the economic foundation of the two cities is still stable. In recent years, policy support has been quite strong, and it has achieved remarkable results in infrastructure building, scientific and technological innovation investment, etc. This has laid a solid foundation for the development of the two cities, such as the foundation of Guangsha, so that the two cities can stand firm in the economic wave. Many emerging industries have sprung up after a rain and are booming. High-tech enterprises continue to emerge, and their innovative vitality has injected new springs into the economies of the two cities, such as new energy, artificial intelligence and other fields. The development momentum is rapid and shining like stars, outlining a grand blueprint for the future development of the two cities.
However, the prospects of the two cities are not smooth. Market competition is becoming increasingly fierce, and the rise of surrounding cities should not be underestimated. If the two cities form a encirclement, they want to share the market. This is like sailing against the current, if you don't advance, you will retreat. If the two cities slack a little, they may be overtaken. The global economic situation is changing, trade protectionism is on the rise, and the international market fluctuates frequently. It is like a storm and rain, impacting the foreign trade of the two cities. The economic extroversion of the two cities is quite high, and the wind and grass in the international market may trigger a chain reaction, affecting the operation and development of enterprises in the two cities.
Furthermore, there is also room for optimization of the internal structure. The road to transformation of traditional industries is still long, and some enterprises are trapped in the old model, which is difficult to adapt to the rhythm of the new economy. For example, although they are ambitious, their pace is slightly stagnant. And talent competition is also the key. If they cannot attract and retain high-end talents, it is like a woman who cannot cook without rice, and innovation and development will be unsustainable.
Overall, [b, d] The two cities have bright prospects and challenges. When taking a positive attitude, taking advantage of the situation, grasping policy opportunities, and strengthening their own advantages, such as Kunpeng spreading its wings, it will skyrocket. At the same time, it is necessary to face up to challenges, accelerate industrial restructuring, enhance innovation capabilities, and enhance the attractiveness of talents, so as to ride the wave of the market and create brilliant prospects.