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weak to strong (usually 3 or 4) 1500 1580 1600 C≡C terminal alkynes 2100–2140 weak disubst. alkynes 2190–2260 very weak (often indistinguishable) C=O aldehyde/ketone saturated aliph./cyclic 6-membered 1720 α,β-unsaturated 1685 aromatic ketones 1685 cyclic 5-membered 1750 cyclic 4-membered 1775 aldehydes 1725
As the main part of the 'window' spectrum, a clear electromagnetic spectral transmission 'window' can be seen between 8 and 14 μm. A fragmented part of the 'window' spectrum (one might say a louvred part of the 'window') can also be seen in the visible to mid-wavelength infrared between 0.2 and 5.5 μm.
The 38 8-1/8 engines are inline diesel engines, with combustion occurring between two opposed pistons within a single cylinder liner. The engine has a bore of 8-1/8 inches (206.4 mm), a stroke of 10 inches (254.0 mm) for each piston, and the cylinder height is 38 inches (970 mm). The engine block is of dry block construction. [1]
The rial (Persian: ریال ایران, romanized: riyâl-è Irân; abbreviation: Rl (singular) and Rls (plural) [15] [16] or IR [17] in Latin; ISO code: IRR) is the official currency of Iran. It is subdivided into 100 dinars , but due to the rial's low purchasing power the dinar is not practically used.
Tris(2-phenylpyridine)iridium, abbreviated [Ir(ppy) 3] is the organoiridium complex with the formula Ir(C 6 H 4-C 5 H 4 N) 3. The complex, a yellow-green solid, is a derivative of Ir 3+ bound to three monoanionic 2-pyridinylphenyl ligands. It is electroluminescent, emitting green light. The complex is observed with the facial stereochemistry ...
The software to generate the lookup table is so small and fast that it is usually faster to compute them on program startup than to load precomputed tables from storage. One popular technique is to use the bit-at-a-time code 256 times to generate the CRCs of the 256 possible 8-bit bytes. [4]
[3] [4] The complex is widely used precursor to other iridium complexes. A notable derivative is Crabtree's catalyst. [5] The chloride ligands can also be replaced with methoxide to give cyclooctadiene iridium methoxide dimer, Ir 2 (OCH 3) 2 (C 8 H 12) 2. [6] The cyclooctadiene ligand is prone to isomerize in cationic complexes of the type [(C ...
China was the first country to operate a demonstration generation-IV reactor, the HTR-PM in Shidaowan, Shandong, [7] [8] which is a pebble-bed type high-temperature gas-cooled reactor. It was connected to the grid in December 2023, making it the world's first Gen IV reactor to enter commercial operation.