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Showing 1 to 12 of 36 entries
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Cosmic-ray positron energy spectrum measured by PAMELA.

Physical review letters

Adriani O, Barbarino GC, Bazilevskaya GA, Bellotti R, Bianco A, Boezio M, Bogomolov EA, Bongi M, Bonvicini V, Bottai S, Bruno A, Cafagna F, Campana D, Carbone R, Carlson P, Casolino M, Castellini G, De Donato C, De Santis C, De Simone N, Di Felice V, Formato V, Galper AM, Karelin AV, Koldashov SV, Koldobskiy SA, Krutkov SY, Kvashnin AN, Leonov A, Malakhov V, Marcelli L, Martucci M, Mayorov AG, Menn W, Mergé M, Mikhailov VV, Mocchiutti E, Monaco A, Mori N, Munini R, Osteria G, Palma F, Papini P, Pearce M, Picozza P, Pizzolotto C, Ricci M, Ricciarini SB, Rossetto L, Sarkar R, Scotti V, Simon M, Sparvoli R, Spillantini P, Stochaj SJ, Stockton JC, Stozhkov YI, Vacchi A, Vannuccini E, Vasilyev GI, Voronov SA, Yurkin YT, Zampa G, Zampa N, Zverev VG.
PMID: 24010424
Phys Rev Lett. 2013 Aug 23;111(8):081102. doi: 10.1103/PhysRevLett.111.081102. Epub 2013 Aug 19.

Precision measurements of the positron component in the cosmic radiation provide important information about the propagation of cosmic rays and the nature of particle sources in our Galaxy. The satellite-borne experiment PAMELA has been used to make a new...

Trinuclear alkyl hydrido rare-earth complexes supported by amidopyridinato ligands: synthesis, structures, C-Si bond activation and catalytic activity in ethylene polymerization.

Dalton transactions (Cambridge, England : 2003)

Lyubov DM, Cherkasov AV, Fukin GK, Ketkov SY, Shavyrin AS, Trifonov AA.
PMID: 24983231
Dalton Trans. 2014 Oct 14;43(38):14450-60. doi: 10.1039/c4dt00806e.

The reaction of Ap(9Me)Lu(CH2SiMe3)2(thf) (Ap(9Me) = (2,4,6-trimethylphenyl)[6-(2,4,6-triisopropylphenyl)pyridine-2-yl]amido ligand) with two molar equivalents of PhSiH3 affords a trinuclear alkyl-hydrido cluster [(Ap(9Me)Lu)3(μ(2)-H)3(μ(3)-H)2(CH2SiMe3)(thf)2]. The analogous reactions with Ap(9Me)Ln(CH2SiMe3)2(thf) (Ln = Y, Yb) are more complex and result in the formation of mixtures...

Time Dependence of the Electron and Positron Components of the Cosmic Radiation Measured by the PAMELA Experiment between July 2006 and December 2015.

Physical review letters

Adriani O, Barbarino GC, Bazilevskaya GA, Bellotti R, Boezio M, Bogomolov EA, Bongi M, Bonvicini V, Bottai S, Bruno A, Cafagna F, Campana D, Carlson P, Casolino M, Castellini G, De Santis C, Di Felice V, Galper AM, Karelin AV, Koldashov SV, Koldobskiy SA, Krutkov SY, Kvashnin AN, Leonov A, Malakhov V, Marcelli L, Martucci M, Mayorov AG, Menn W, Mergé M, Mikhailov VV, Mocchiutti E, Monaco A, Mori N, Munini R, Osteria G, Panico B, Papini P, Pearce M, Picozza P, Ricci M, Ricciarini SB, Simon M, Sparvoli R, Spillantini P, Stozhkov YI, Vacchi A, Vannuccini E, Vasilyev GI, Voronov SA, Yurkin YT, Zampa G, Zampa N, Potgieter MS, Vos EE.
PMID: 27367381
Phys Rev Lett. 2016 Jun 17;116(24):241105. doi: 10.1103/PhysRevLett.116.241105. Epub 2016 Jun 17.

Cosmic-ray electrons and positrons are a unique probe of the propagation of cosmic rays as well as of the nature and distribution of particle sources in our Galaxy. Recent measurements of these particles are challenging our basic understanding of...

Selective protonation of the Y-C bond in trinuclear yttrium alkyl-hydrido clusters and formation of the cationic polyhydrido core.

Chemistry (Weinheim an der Bergstrasse, Germany)

Lyubov DM, Döring C, Ketkov SY, Kempe R, Trifonov AA.
PMID: 21381143
Chemistry. 2011 Mar 28;17(14):3824-6. doi: 10.1002/chem.201003616. Epub 2011 Mar 04.

No abstract available.

TD DFT insights into unusual properties of excited sandwich complexes: structural transformations and vibronic interactions in Rydberg-state bis(η.

Physical chemistry chemical physics : PCCP

Ketkov SY, Rychagova EA, Tzeng SY, Tzeng WB.
PMID: 30211920
Phys Chem Chem Phys. 2018 Oct 07;20(37):23988-23997. doi: 10.1039/c8cp04845b. Epub 2018 Sep 13.

Sandwich compounds represent the only class of organometallics revealing vibronic structures of Rydberg transitions in their gas-phase absorption and ionization spectra. This provides rare possibilities of verifying computational results for Rydberg-state metal complexes by comparison with experimental spectroscopic data....

Reversible Addition of Carbon Dioxide to Main Group Metal Complexes at Temperatures about 0 °C.

Chemistry (Weinheim an der Bergstrasse, Germany)

Koptseva TS, Sokolov VG, Ketkov SY, Rychagova EA, Cherkasov AV, Skatova AA, Fedushkin IL.
PMID: 33645870
Chemistry. 2021 Mar 26;27(18):5745-5753. doi: 10.1002/chem.202004991. Epub 2021 Mar 01.

The reaction of dialane [LAl-AlL] (1; L=dianion of 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene, dpp-bian) with carbon dioxide results in two different products depending on solvent. In toluene at temperatures of about 0 °C, the reaction gives cycloadduct [L(CO

Growth Kinetics and Protective Efficacy of Attenuated ASFV Strain Congo with Deletion of the EP402 Gene.

Viruses

Koltsova G, Koltsov A, Krutko S, Kholod N, Tulman ER, Kolbasov D.
PMID: 34203302
Viruses. 2021 Jun 28;13(7). doi: 10.3390/v13071259.

African swine fever (ASF) is an emerging disease threat to the swine industry worldwide. There is no vaccine against ASF, and progress is hindered by a lack of knowledge concerning the extent of ASFV strain diversity and the viral...

Rare-earth metal-mediated PhC[triple bond, length as m-dash]N insertion into N,N-bis(trimethylsilyl)naphthalene-1,8-diamido dianion - a synthetic approach to complexes coordinated by ansa-bridged amido-amidinato ligand.

Dalton transactions (Cambridge, England : 2003)

Lyubov DM, Cherkasov AV, Fukin GK, Lyssenko KA, Rychagova EA, Ketkov SY, Trifonov AA.
PMID: 29226296
Dalton Trans. 2018 Jan 02;47(2):438-451. doi: 10.1039/c7dt03809g.

Lithium silylamides 1,8-C

PAMELA results on the cosmic-ray antiproton flux from 60 MeV to 180 GeV in kinetic energy.

Physical review letters

Adriani O, Barbarino GC, Bazilevskaya GA, Bellotti R, Boezio M, Bogomolov EA, Bonechi L, Bongi M, Bonvicini V, Borisov S, Bottai S, Bruno A, Cafagna F, Campana D, Carbone R, Carlson P, Casolino M, Castellini G, Consiglio L, De Pascale MP, De Santis C, De Simone N, Di Felice V, Galper AM, Gillard W, Grishantseva L, Hofverberg P, Jerse G, Karelin AV, Koldashov SV, Krutkov SY, Kvashnin AN, Leonov A, Malvezzi V, Marcelli L, Mayorov AG, Menn W, Mikhailov VV, Mocchiutti E, Monaco A, Mori N, Nikonov N, Osteria G, Papini P, Pearce M, Picozza P, Pizzolotto C, Ricci M, Ricciarini SB, Rossetto L, Simon M, Sparvoli R, Spillantini P, Stozhkov YI, Vacchi A, Vannuccini E, Vasilyev G, Voronov SA, Wu J, Yurkin YT, Zampa G, Zampa N, Zverev VG.
PMID: 20867623
Phys Rev Lett. 2010 Sep 17;105(12):121101. doi: 10.1103/PhysRevLett.105.121101. Epub 2010 Sep 13.

The satellite-borne experiment PAMELA has been used to make a new measurement of the cosmic-ray antiproton flux and the antiproton-to-proton flux ratio which extends previously published measurements down to 60 MeV and up to 180 GeV in kinetic energy....

Chemistry of the phosphorus-nitrogen ligands. Multiple isomeric transformations of the diphosphinohydrazine bearing 8-quinolyl substituent: P→C, P→N, and P→P migrations caused by different factors.

Inorganic chemistry

Kornev AN, Belina NV, Sushev VV, Panova JS, Lukoyanova OV, Ketkov SY, Fukin GK, Lopatin MA, Abakumov GA.
PMID: 20839879
Inorg Chem. 2010 Oct 18;49(20):9677-82. doi: 10.1021/ic101410u.

The reaction of 8-quinolylhydrazine with 2 equiv of Ph(2)PCl in the presence of Et(3)N gives 8-[(Ph(2)P)(2)NNH]-Quin (1) (Quin = quinolyl) in 84% yield. The heating of 1 at 130 °C for 1 h in toluene results in migration of...

Boron complexes of redox-active diimine ligand.

Dalton transactions (Cambridge, England : 2003)

Fedushkin IL, Markina OV, Lukoyanov AN, Morozov AG, Baranov EV, Maslov MO, Ketkov SY.
PMID: 23435476
Dalton Trans. 2013 Jun 14;42(22):7952-61. doi: 10.1039/c3dt33055a. Epub 2013 Feb 22.

Boron complexes (dpp-bian)BCl2 (1) and (dpp-bian)BX (X = Cl, 2; Br, 3) (dpp-bian = 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene) have been prepared by reacting mixtures dpp-bian-BX3 (1 : 1) with one (1) and two (2 and 3) equivalents of sodium correspondingly in toluene....

The intramolecular rearrangement of phosphinohydrazides [R'2P-NR-NR-M] → [RN═PR'2-NR-M]: general rules and exceptions. transformations of bulky phosphinohydrazines (R-NH-N(PPh2)2, R = tBu, Ph2P).

Inorganic chemistry

Kornev AN, Sushev VV, Panova YS, Belina NV, Lukoyanova OV, Fukin GK, Ketkov SY, Abakumov GA, Lönnecke P, Hey-Hawkins E.
PMID: 22208524
Inorg Chem. 2012 Jan 16;51(2):874-81. doi: 10.1021/ic201617p. Epub 2011 Dec 30.

Reactions of diphosphinohydrazines R-NH-N(PPh(2))(2) (R = tBu (1), Ph(2)P (3)) with some metalation reagents (Co[N(SiMe(3))(2)](2), LiN(SiMe(3))(2), La[N(SiMe(3))(2)](3), nBuLi, MeLi) were performed. Compound 1 was synthesized by the reaction of Ph(2)PCl with tert-butylhydrazine hydrochloride in 83% yield. This compound reveals...

Showing 1 to 12 of 36 entries