Search results
Results From The WOW.Com Content Network
The prothrombin time ratio is the ratio of a subject's measured prothrombin time (in seconds) to the normal laboratory reference PT. The PT ratio varies depending on the specific reagents used, and has been replaced by the INR. [3] Elevated INR may be useful as a rapid and inexpensive diagnostic of infection in people with COVID-19. [4]
Platinum disulfide is the inorganic compound with the formula Pt S 2.It is a black, semiconducting solid, which is insoluble in all solvents.The compound adopts the cadmium iodide structure, being composed of sheets of octahedral Pt and pyramidal sulfide centers.
Platinum(II) sulfide is the inorganic compound with the formula Pt S. It is a green solid, insoluble in all solvents. It is a green solid, insoluble in all solvents. The compound adopts an unusual structure, being composed of square planar Pt and tetrahedral sulfide centers. [ 1 ]
Theoretical chemistry requires quantities from core physics, such as time, volume, temperature, and pressure.But the highly quantitative nature of physical chemistry, in a more specialized way than core physics, uses molar amounts of substance rather than simply counting numbers; this leads to the specialized definitions in this article.
F 2 Pt: platinum difluoride: 18820-56-9 F 2 Pu: plutonium difluoride: 20882-15-9 F 2 S: sulfur difluoride: 13814-25-0 F 2 SW: tungsten difluoride monosulfide: 41831-78-1 F 2 S 2: difluorodisulfane: 13709-35-8 F 2 S 2: thiothionyl fluoride: 16860-99-4 F 2 S 2: thiothionyl fluoride: 101947-30-2 F 2 S 2 W: tungsten difluoride disulfide: 41831-81-6 ...
Pt, 192 Pt, 194 Pt, 195 Pt, 196 Pt, and 198 Pt. The most abundant of these is 195 Pt, comprising 33.83% of all platinum. It is the only stable isotope with a non-zero spin. The spin of 1 / 2 and other favourable magnetic properties of the nucleus are utilised in 195 Pt NMR. Due to its spin and large abundance, 195 Pt satellite peaks are also ...
Treatment of PtCl 4 with aqueous base gives the [Pt(OH) 6] 2− ion. With methyl Grignard reagents followed by partial hydrolysis, PtCl 4 converts to the cuboidal cluster [Pt(CH 3) 3 (OH)] 4. [6] Upon heating PtCl 4 evolves chlorine to give PtCl 2: PtCl 4 → PtCl 2 + Cl 2. The heavier halides, PtBr 4 and PtI 4, are also known.
Platinum hexafluoride is the chemical compound with the formula Pt F 6, and is one of seventeen known binary hexafluorides. It is a dark-red volatile solid that forms a red gas. The compound is a unique example of platinum in the +6 oxidation state. With only four d-electrons, it is paramagnetic with a triplet ground state.