ओस्मियम हिंदी उपयोग और उदाहरण

अकार्बनिक यौगिक ओस्मियम हेक्साफ्लोराइड (Osmium hexafluoride, रासायनिक सूत्र: OsF6), जिसे ओस्मियम(VI) फ्लोराइड (osmium(VI) fluoride) भी कहा जाता है, ओस्मियम व फ्लोरीन का एक अकार्बनिक रासायनिक यौगिक है।

उच्चतापसह धातुएँ ओस्मियम (Osmium ; संकेत : Os; परमाणुभार 190 ; परमाणुसंख्या 76) एक रासायनिक तत्व है।

""उच्चतापसह धातुएँ ओस्मियम (Osmium ; संकेत : Os; परमाणुभार 190 ; परमाणुसंख्या 76) एक रासायनिक तत्व है।

इस समूह में लोहा (Fe), रुथेनियम (Ru), ओस्मियम (Os) और हैसियम (Hs) तत्व शामिल हैं।

ओस्मियम इसके अंग्रेजी अर्थ का उदाहरण

Although there are many routes to accomplish this oxidation, the most common and direct processes use a high-oxidation-state transition metal (typically osmium or manganese).

In the dihydroxylation mechanism, a ligand first coordinates to the metal catalyst (depicted as osmium), which dictates the chiral selectivity of the olefin.

The Milas hydroxylation, Upjohn dihydroxylation, and Sharpless asymmetric dihydroxylation reactions all use osmium as the catalyst as well as varying secondary oxidizing agents.

It also employs N-Methylmorpholine N-oxide (NMO) as the stoichiometric oxidant to regenerate the osmium catalyst, allowing for catalytic amounts of osmium to be used.

The use of tetramethylenediamine (TMEDA) as a ligand produced syn-diols with a favorable diastereomeric ratio compared to Kishi’s protocol; however, stoichiometric osmium is employed.

Since osmium tetroxide is expensive and toxic, other metals have been used to prepare vicinal diols from olefins.

Manganese is also used in dihydroxylation and is often chosen when osmium tetroxide methods yield poor results.

have worked on an enantiospecific synthesis of sugars pertaining to kakelokelose and other sugars, employing many different dihydroxylation reactions with osmium catalyst.

The picture was obtained on a thin film of polymer cast onto mercury from solution, and then stained with osmium tetroxide.

The complex contains the world's largest reserves of platinum-group metals (PGMs) or platinum group elements (PGEs)—platinum, palladium, osmium, iridium, rhodium, and ruthenium along with vast quantities of iron, tin, chromium, titanium and vanadium.

The osmium complex is also known.

In terms of raw material shopping, this taxol molecule consists of the aforementioned Wieland-Miescher ketone, 2-methyl-3-pentanone, lithium aluminium hydride, osmium tetroxide, phenyllithium, pyridinium chlorochromate, the Corey-Chaykovsky reagent and acryloyl chloride.

Two more hydroxyl groups were added by oxidation of the newly formed double bond with a catalytic amount of osmium tetroxide in the presence of N-methylmorpholine N-oxide.