Cluster carbonyls of Os, Fe and Fe‐Rh on oxide supports: Synthesis and properties

Кузнецов, Б. Н.; Kovalchuk, Vladimir I.; Чесноков, Николай В.; Mikova, Nadezhda M.; Наймушина, Л В

doi:10.1002/masy.19981360109

Cited by 2 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A well-known carbonyl osmium complex Os 3 (CO) 12 (Figure 1) is widely used in synthesis in organometallic and inorganic chemistry [12][13][14]. It acts as a catalyst for a wide range of reactions [15]. It was considered as a model system for studies of mechanisms of photoinduced reactions [16][17][18] and vibrational and NMR spectroscopy [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Chirality and Relativistic Effects in Os3(CO)12

Ryzhikov¹,

Mirzaeva²,

Kozlova³

et al. 2021

Molecules

View full text Add to dashboard Cite

The energy and structural parameters were obtained for all forms of the carbonyl complex of osmium Os3(CO)12 with D3h and D3 symmetries using density functional theory (DFT) methods. The calculations took into account various levels of relativistic effects, including those associated with nonconservation of spatial parity. It was shown that the ground state of Os3(CO)12 corresponds to the D3 symmetry and thus may be characterized either as left-twisted (D3S) or right-twisted (D3R). The D3S↔D3R transitions occur through the D3h transition state with an activation barrier of ~10–14 kJ/mol. Parity violation energy difference (PVED) between D3S and D3R states equals to ~5 × 10−10 kJ/mol. An unusual three-center exchange interaction was found inside the {Os3} fragment. It was found that the cooperative effects of the mutual influence of osmium atoms suppress the chirality of the electron system in the cluster.

show abstract

Section: Introductionmentioning

confidence: 99%

Chirality and Relativistic Effects in Os3(CO)12

Ryzhikov¹,

Mirzaeva²,

Kozlova³

et al. 2021

Molecules

View full text Add to dashboard Cite

show abstract

“…For example, copper salts introduced into cellulose can reduce the onset temperature of intense thermal transformation processes of cellulose by 40°-50° and raise the yield and the specifi c surface area of PCMs as compared with the unmodifi ed cellulose [13].…”

mentioning

confidence: 99%

Production and properties of porous carbon materials from chemically modified microcrystalline cellulose

et al. 2015

View full text Add to dashboard Cite

Certain fundamental aspects of how the porous structure is formed in carbon materials produced by pyrolysis of microcrystalline cellulose modifi ed with phosphoric acid, potassium hydroxide, and zinc chloride were determined. The above chemical promoters shift the onset of the process of intense thermal transformation of cellulose to lower temperatures and promote formation of porous carbon materials. Water treatment of porous carbon materials produced by pyrolysis of microcrystalline cellulose with high content of a promoter leads to additional pore opening due to the removal of the excess amount of the promoter and soluble products formed in its interaction with cellulose, which makes it possible to obtain porous carbon materials with specifi c surface area of up to 1500 m 2 g -1 .

show abstract

Cluster carbonyls of Os, Fe and Fe‐Rh on oxide supports: Synthesis and properties

Cited by 2 publications

References 8 publications

Chirality and Relativistic Effects in Os3(CO)12

Chirality and Relativistic Effects in Os3(CO)12

Production and properties of porous carbon materials from chemically modified microcrystalline cellulose

Contact Info

Product

Resources

About