Abstract: A liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of nematic phase, a low minimum temperature of nematic phase, small viscosity, suitable optical anisotropy, large positive dielectric anisotropy, large specific resistance, high stability to UV light and heat or a large elastic constant, or having a suitable balance regarding at least two of the characteristics, and an AM device having a short response time, a large voltage holding ratio, a low threshold voltage, a large contrast ratio and a long service life, etc. are described. The composition has a nematic phase and contains an additive that can suppress formation of an impurity, and a specific compound having large dielectric anisotropy as a first component, and may contain a specific compound having a high maximum temperature or small viscosity as a second component. The AM device is an LCD device including the composition.

Abstract: A liquid crystal composition having a suitable balance regarding at least one or two of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, small viscosity, suitable optical anisotropy, large positive dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat or a large elastic constant; and an AM device having a short response time, a large voltage holding ratio, a low threshold voltage, a large contrast ratio or a long service life. The composition has positive dielectric anisotropy and contains a specific compound having high stability to ultraviolet light as a first component, and a liquid crystal display device includes the composition.

Abstract: A liquid crystal composition satisfying at least one characteristic such as high maximum temperature of a nematic phase, low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light, heat or the like, or having a suitable balance regarding at least two of the characteristics; and an AM device having characteristics such as short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio and a long service life. The liquid crystal composition contains a compound that can contribute to high stability to heat or ultraviolet light, has negative dielectric anisotropy and the nematic phase.

Abstract: A liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or a liquid crystal composition having a suitable balance regarding at least two of the characteristics. The liquid crystal composition contains a compound contributing to the high stability to heat or ultraviolet light, and has a negative dielectric anisotropy and a nematic phase. The composition contains a specific compound having a large negative dielectric anisotropy as a first component, and may contain a specific compound having the high maximum temperature or the small viscosity as a second component.

Abstract: The present invention provides a chemical vapor deposition raw material, which has a low melting point, has heat stability such that no thermal decomposition occurs during vaporization, readily decomposes at low temperature during film-formation, and can stably form a nickel thin-film having fewer impurities. The present invention relates to a chemical vapor deposition raw material containing an organic nickel compound, in which a cyclopentadienyl group or a derivative thereof is coordinated to nickel, and a cycloalkenyl group having one allyl group or a derivative thereof is coordinated to the carbon skeleton of cycloalkyl. This raw material has a low melting point, proper heat stability and film-formation ability at low temperature. Further, due to a high vapor pressure, the raw material is suitable for a three-dimensional electrode material having a three-dimensional structure.

Abstract: A liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat, or having a suitable balance regarding at least two of the characteristics; and an AM device having characteristics such as short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio and long service life are provided.

Abstract: Provided are a liquid crystal composition and an AM device including the composition. The composition has a nematic phase and contains a specific compound having a large dielectric anisotropy as a first component, a specific compound having a small viscosity as a second component, and may contain a specific compound having a high maximum temperature or a small viscosity as a third component or a specific compound having a large dielectric anisotropy as a fourth component, and a liquid crystal display device includes the composition.

Abstract: To provide a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat, or having a suitable balance regarding at least two of the characteristics; and an AM device having characteristics such as short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio and long service life.

Abstract: A liquid crystal composition having at least one or a suitable balance regarding at least two of characteristics such as high maximum temperature of a nematic phase, low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light or heat and a large elastic constant; an AM device having characteristics such as short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio and long service life are described.

Abstract: A liquid crystal composition satisfies at least one of characteristics such as a high maximum temperature, a low minimum temperature, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light, to heat or the like, or has a suitable balance regarding at least two of the characteristics; and an AM device has characteristics such as a short response time, a large voltage holding ratio, a low threshold voltage, a large contrast ratio and a long service life. The liquid crystal composition contains a specific compound having at least two polymerizable groups, and the liquid crystal display device includes the composition. The composition contains a specific compound having large negative dielectric anisotropy as a first component, and may contain a specific compound having the high maximum temperature or the small viscosity as a second component.

Abstract: The present invention is an organoruthenium compound for a chemical vapor deposition raw material, including dodecacarbonyl triruthenium represented by the following chemical formula, wherein the iron (Fe) concentration is 1 ppm or less. The DCR in the present invention can be produced by obtaining crude DCR by directly carbonylating ruthenium through allowing a ruthenium salt and carbon monoxide to react with each other and by purifying the crude DCR by a sublimation method. In the synthesis step, the concentration of Fe in the obtained crude DCR is preferably set at 10 ppm or less.

Abstract: The present invention provides a method of extracting an asymmetric ?-diketone compound from a ?-diketone compound containing at least one symmetric ?-diketone compound mixed in the asymmetric ?-diketone compound, and the method includes the step (A) of adjusting a pH of a mixed solution of the ?-diketone compound and water at 11.5 or more and dissolving the ?-diketone compound into water to form a ?-diketone compound solution and the step (B) of subsequently adjusting the pH of the ?-diketone compound solution at 9.5 or less and recovering the asymmetric ?-diketone compound of Chemical Formula 1 separated from the ?-diketone compound solution. The present invention further includes at least either (a) a step of setting the upper limit of the pH of the mixed solution to 12.5 to form a ?-diketone compound solution in the step (A) and bringing the ?-diketone compound solution into contact with a hydrophobic solvent or (b) a step of setting the lower limit of the pH of the ?-diketone compound solution to 8.

Abstract: A liquid crystal composition and an AM LCD device including the same are described. The liquid crystal composition has a negative dielectric anisotropy, contains a specific compound having a large negative dielectric anisotropy as a first component, and may further contain a specific compound having high a maximum temperature or a small viscosity as a second component, a specific compound having a negative dielectric anisotropy as a third component, and/or a specific compound having a polymerizable group as an additive component.

Abstract: The present invention is a method for producing dodecacarbonyl triruthenium (DCR) including a process of carbonylating ruthenium chloride with carbon monoxide, in which an amine is added to a reaction system at 0.8 molar equivalent or more with respect to chlorine of the ruthenium chloride and the carbonylation is conducted at a reaction temperature of 50 to 100° C. and a reaction pressure of 0.2 to 0.9 MPa. According to the present invention, it is possible to produce dodecacarbonyl triruthenium having less residual impurity metals without applying a reaction condition of a high pressure.

Abstract: A liquid crystal composition having at least one or a suitable balance regarding at least two of characteristic such as high maximum temperature of a nematic phase, low minimum temperature thereof, small viscosity, suitable optical anisotropy, large dielectric anisotropy, large specific resistance, high stability to ultraviolet-light or heat, or large elastic constant; an AM-device having short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio, a negatively large DC brightness relaxation time constant and long-service-life. The liquid crystal composition contains a compound contributing to high stability to heat or ultraviolet-light as an additive component and a specific compound having positively large dielectric anisotropy, and a liquid crystal display device includes the composition.

Abstract: A liquid crystal composition and an AM device containing the liquid crystal composition are described. The liquid crystal composition has a negative dielectric anisotropy, and includes a specific compound having a large optical anisotropy and a small viscosity as a first component, a specific compound having a small viscosity as a second component, and a specific compound having a large optical anisotropy as a third component. The composition may further include a specific compound having a high maximum temperature as a fourth component, a specific compound having a negative dielectric anisotropy as a fifth component, and/or a specific compound having a polymerizable group as an additive component.

Abstract: A liquid crystal composition that has negative dielectric anisotropy and that comprises a specific compound having a large optical anisotropy and a small viscosity as a first component, a specific compound having a small viscosity as a second component, and a specific compound having a large negative dielectric anisotropy as a third component, and may comprise a specific compound having a high maximum temperature or a low maximum temperature as a fourth component, or a specific compound having a polymerizable group as an additive component.

Abstract: To provide a liquid crystal composition satisfying at least one characteristic such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large dielectric anisotropy, large specific resistance, high stability to ultraviolet light, high stability to heat and large elastic constant, or has a suitable balance between at least two of these characteristics. To provide an AM device having short response time, large voltage holding ratio, low threshold voltage, large contrast ratio, long service life and so forth. A liquid crystal composition that has a nematic phase and that comprises a compound having large dielectric anisotropy as a first component and a compound having small viscosity as a second component, and may comprise a compound having high maximum temperature or small viscosity as a third component and a compound having a large dielectric anisotropy as a fourth component, and a liquid crystal display device comprising this composition.

Abstract: A liquid crystal composition having at least one or a suitable balance regarding at least two of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance and high stability to ultraviolet light and heat is described; an AM device having characteristics such as short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio and a long service life.

Abstract: The present invention is a method for producing dodecacarbonyl triruthenium (DCR) including a process of carbonylating ruthenium chloride with carbon monoxide, in which an amine is added to a reaction system at 0.8 molar equivalent or more with respect to chlorine of the ruthenium chloride and the carbonylation is conducted at a reaction temperature of 50 to 100° C. and a reaction pressure of 0.2 to 0.9 MPa. According to the present invention, it is possible to produce dodecacarbonyl triruthenium having less residual impurity metals without applying a reaction condition of a high pressure.