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DOE OSTI2020

Materials Data on Rb(OsO3)2 by Materials Project

RbOs2O6 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Rb1+ is bonded to six equivalent O2- atoms to form RbO6 octahedra that share corners with twelve equivalent OsO6 octahedra. The corner-sharing octahedral tilt angles are 70°. All Rb–O bond lengths are 3.18 Å. Os+5.50+ is bonded to six equivalent O2- atoms to form OsO6 octahedra that share corners with six equivalent RbO6 octahedra and corners with six equivalent OsO6 octahedra. The corner-sharing octahedra tilt angles range from 40–70°. All Os–O bond lengths are 1.93 Å. O2- is bonded in a distorted bent 150 degrees geometry to one Rb1+ and two equivalent Os+5.50+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Yb(SiOs)2 by Materials Project

Yb(OsSi)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Yb3+ is bonded to eight equivalent Os+1.50- atoms to form distorted edge-sharing YbOs8 hexagonal bipyramids. All Yb–Os bond lengths are 3.19 Å. Os+1.50- is bonded in a 4-coordinate geometry to four equivalent Yb3+ and four equivalent Si atoms. All Os–Si bond lengths are 2.40 Å. Si is bonded in a 5-coordinate geometry to four equivalent Os+1.50- and one Si atom. The Si–Si bond length is 2.52 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tm(SiOs)2 by Materials Project

Tm(OsSi)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Tm3+ is bonded to eight equivalent Os+1.50- atoms to form distorted edge-sharing TmOs8 hexagonal bipyramids. All Tm–Os bond lengths are 3.17 Å. Os+1.50- is bonded in a 4-coordinate geometry to four equivalent Tm3+ and four equivalent Si atoms. All Os–Si bond lengths are 2.39 Å. Si is bonded in a 5-coordinate geometry to four equivalent Os+1.50- and one Si atom. The Si–Si bond length is 2.44 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Lu3Si13Os4 by Materials Project

Lu3Os4Si13 crystallizes in the cubic Pm-3n space group. The structure is three-dimensional. Lu3+ is bonded in a 12-coordinate geometry to four equivalent Os+1.25- and twelve equivalent Si+0.31- atoms. All Lu–Os bond lengths are 3.10 Å. There are eight shorter (3.14 Å) and four longer (3.19 Å) Lu–Si bond lengths. Os+1.25- is bonded in a 6-coordinate geometry to three equivalent Lu3+ and six equivalent Si+0.31- atoms. All Os–Si bond lengths are 2.42 Å. There are two inequivalent Si+0.31- sites. In the first Si+0.31- site, Si+0.31- is bonded in a 2-coordinate geometry to three equivalent Lu3+, two equivalent Os+1.25-, and one Si+0.31- atom. The Si–Si bond length is 2.77 Å. In the second Si+0.31- site, Si+0.31- is bonded in a cuboctahedral geometry to twelve equivalent Si+0.31- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho3Si13Os4 by Materials Project

Ho3Os4Si13 crystallizes in the cubic Pm-3n space group. The structure is three-dimensional. Ho3+ is bonded in a 12-coordinate geometry to four equivalent Os+1.25- and twelve equivalent Si+0.31- atoms. All Ho–Os bond lengths are 3.11 Å. There are eight shorter (3.16 Å) and four longer (3.20 Å) Ho–Si bond lengths. Os+1.25- is bonded in a 6-coordinate geometry to three equivalent Ho3+ and six equivalent Si+0.31- atoms. All Os–Si bond lengths are 2.43 Å. There are two inequivalent Si+0.31- sites. In the first Si+0.31- site, Si+0.31- is bonded in a 2-coordinate geometry to three equivalent Ho3+, two equivalent Os+1.25-, and one Si+0.31- atom. The Si–Si bond length is 2.75 Å. In the second Si+0.31- site, Si+0.31- is bonded in a cuboctahedral geometry to twelve equivalent Si+0.31- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Er3Si13Os4 by Materials Project

Er3Os4Si13 crystallizes in the cubic Pm-3n space group. The structure is three-dimensional. Er3+ is bonded in a 12-coordinate geometry to four equivalent Os+1.25- and twelve equivalent Si+0.31- atoms. All Er–Os bond lengths are 3.11 Å. There are eight shorter (3.16 Å) and four longer (3.21 Å) Er–Si bond lengths. Os+1.25- is bonded in a 6-coordinate geometry to three equivalent Er3+ and six equivalent Si+0.31- atoms. All Os–Si bond lengths are 2.43 Å. There are two inequivalent Si+0.31- sites. In the first Si+0.31- site, Si+0.31- is bonded in a 2-coordinate geometry to three equivalent Er3+, two equivalent Os+1.25-, and one Si+0.31- atom. The Si–Si bond length is 2.76 Å. In the second Si+0.31- site, Si+0.31- is bonded in a cuboctahedral geometry to twelve equivalent Si+0.31- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tb(SiOs)2 by Materials Project

TbOs2Si2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Tb3+ is bonded in a 8-coordinate geometry to eight equivalent Os+1.50- atoms. All Tb–Os bond lengths are 3.20 Å. Os+1.50- is bonded in a 4-coordinate geometry to four equivalent Tb3+ and four equivalent Si atoms. All Os–Si bond lengths are 2.40 Å. Si is bonded in a 5-coordinate geometry to four equivalent Os+1.50- and one Si atom. The Si–Si bond length is 2.49 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm(SiOs)2 by Materials Project

SmOs2Si2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Sm3+ is bonded in a 8-coordinate geometry to eight equivalent Os+1.50- atoms. All Sm–Os bond lengths are 3.23 Å. Os+1.50- is bonded in a 4-coordinate geometry to four equivalent Sm3+ and four equivalent Si atoms. All Os–Si bond lengths are 2.40 Å. Si is bonded in a 5-coordinate geometry to four equivalent Os+1.50- and one Si atom. The Si–Si bond length is 2.56 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Pr(SiOs)2 by Materials Project

PrOs2Si2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Pr3+ is bonded in a 8-coordinate geometry to eight equivalent Os+1.50- atoms. All Pr–Os bond lengths are 3.27 Å. Os+1.50- is bonded in a 4-coordinate geometry to four equivalent Pr3+ and four equivalent Si atoms. All Os–Si bond lengths are 2.41 Å. Si is bonded in a 5-coordinate geometry to four equivalent Os+1.50- and one Si atom. The Si–Si bond length is 2.66 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Pr(Al5Os)2 by Materials Project

Pr(OsAl5)2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Pr is bonded in a 10-coordinate geometry to four equivalent Os and sixteen Al atoms. All Pr–Os bond lengths are 3.49 Å. There are a spread of Pr–Al bond distances ranging from 3.18–3.70 Å. Os is bonded in a 10-coordinate geometry to two equivalent Pr and ten Al atoms. There are a spread of Os–Al bond distances ranging from 2.58–2.77 Å. There are five inequivalent Al sites. In the first Al site, Al is bonded in a 2-coordinate geometry to one Pr and two equivalent Os atoms. In the second Al site, Al is bonded in a distorted linear geometry to two equivalent Pr and two equivalent Os atoms. In the third Al site, Al is bonded in a 2-coordinate geometry to two equivalent Pr and two equivalent Os atoms. In the fourth Al site, Al is bonded in a distorted bent 120 degrees geometry to two equivalent Pr and two equivalent Os atoms. In the fifth Al site, Al is bonded in a 12-coordinate geometry to one Pr and two equivalent Os atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ag(OsO3)2 by Materials Project

Ag(OsO3)2 crystallizes in the orthorhombic Ima2 space group. The structure is three-dimensional. there are two inequivalent Os+5.50+ sites. In the first Os+5.50+ site, Os+5.50+ is bonded to six O2- atoms to form corner-sharing OsO6 octahedra. The corner-sharing octahedra tilt angles range from 35–46°. There are a spread of Os–O bond distances ranging from 1.87–1.96 Å. In the second Os+5.50+ site, Os+5.50+ is bonded to six O2- atoms to form corner-sharing OsO6 octahedra. The corner-sharing octahedra tilt angles range from 35–46°. There are a spread of Os–O bond distances ranging from 1.89–1.97 Å. Ag1+ is bonded in a hexagonal planar geometry to six O2- atoms. There are a spread of Ag–O bond distances ranging from 2.50–2.79 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Os+5.50+ and two equivalent Ag1+ atoms. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent Os+5.50+ atoms. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Os+5.50+ and one Ag1+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to two Os+5.50+ and one Ag1+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2025

Olefin Coupling Catalyzed by (Pybox)Os Complexes via Osmacyclopentane Intermediates: Comparison with Isoelectronic (Phebox)Ir

(Pybox)Os is found to catalyze alkene hydrovinylation, effecting the dimerization of ethylene, tail-to-tail coupling of propene and 1-butene, and cross-coupling of ethylene with higher α-olefins. This reactivity contrasts with the previously reported dehydrogenative coupling of ethylene to give butadiene catalyzed by the isoelectronic fragment (Phebox)Ir. The reaction mechanism was investigated through computational and experimental means. Both the Os- and Ir-catalyzed reactions proceed through a [2 + 2 + 1] cyclization of the corresponding bis-olefin complex to yield an experimentally observed metallacyclopentane intermediate. In both cases, the metallacyclopentane undergoes β- H elimination, via a dechelated κ 2 -pincer-ligated intermediate, to yield a σ−π-but-3-enyl hydride complex or derivative. Both the greater reactivity and the distinct chemoselectivity of the Os system relative to the Ir system are attributable to C−H reductive elimination by the σ−π-but-3-enyl hydride having a barrier for Os much lower than that for Ir. This lower barrier to C−H elimination for Os is unexpected given that the thermodynamic driving force for elimination is much less for Os than for Ir. Computational studies of model complexes were conducted, comparing (Pybox)Os(L)(CH 3 )(H) with the isoelectronic (Phebox)Ir(L)(CH 3 )(H). The results indicate that the more facile kinetics with Os relative to Ir may be general for C−H elimination from six-coordinate d 6 complexes of the two metals, as well as for the microscopic reverse, i.e., C−H addition to the corresponding four-coordinate d 8 species.

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗
DOE OSTI2020

Materials Data on Ho5(Ge5Os2)2 by Materials Project

Ho5(Os2Ge5)2 crystallizes in the tetragonal P4/mbm space group. The structure is three-dimensional. there are three inequivalent Ho sites. In the first Ho site, Ho is bonded in a 8-coordinate geometry to four equivalent Os and twelve Ge atoms. All Ho–Os bond lengths are 3.27 Å. There are eight shorter (2.98 Å) and four longer (3.38 Å) Ho–Ge bond lengths. In the second Ho site, Ho is bonded to four equivalent Os and eight Ge atoms to form distorted face-sharing HoGe8Os4 cuboctahedra. All Ho–Os bond lengths are 3.12 Å. There are a spread of Ho–Ge bond distances ranging from 2.88–3.11 Å. In the third Ho site, Ho is bonded in a 12-coordinate geometry to four equivalent Os and ten Ge atoms. All Ho–Os bond lengths are 3.30 Å. There are a spread of Ho–Ge bond distances ranging from 3.29–3.39 Å. Os is bonded in a 10-coordinate geometry to five Ho and five Ge atoms. There are a spread of Os–Ge bond distances ranging from 2.44–2.61 Å. There are three inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to six Ho, two equivalent Os, and one Ge atom. The Ge–Ge bond length is 2.52 Å. In the second Ge site, Ge is bonded in a 2-coordinate geometry to five Ho, two equivalent Os, and one Ge atom. The Ge–Ge bond length is 2.58 Å. In the third Ge site, Ge is bonded in a 2-coordinate geometry to four Ho, two equivalent Os, and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.94 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sb2Os(OF7)2 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Pu(SiOs)2 by Materials Project

PuOs2Si2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Pu4+ is bonded in a 8-coordinate geometry to eight equivalent Os2- atoms. All Pu–Os bond lengths are 3.18 Å. Os2- is bonded in a 4-coordinate geometry to four equivalent Pu4+ and four equivalent Si atoms. All Os–Si bond lengths are 2.40 Å. Si is bonded in a 5-coordinate geometry to four equivalent Os2- and one Si atom. The Si–Si bond length is 2.38 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tm5(Ge5Os2)2 by Materials Project

Tm5(Os2Ge5)2 crystallizes in the tetragonal P4/mbm space group. The structure is three-dimensional. there are three inequivalent Tm sites. In the first Tm site, Tm is bonded in a 8-coordinate geometry to four equivalent Os and twelve Ge atoms. All Tm–Os bond lengths are 3.26 Å. There are eight shorter (2.94 Å) and four longer (3.37 Å) Tm–Ge bond lengths. In the second Tm site, Tm is bonded to four equivalent Os and eight Ge atoms to form distorted face-sharing TmGe8Os4 cuboctahedra. All Tm–Os bond lengths are 3.10 Å. There are a spread of Tm–Ge bond distances ranging from 2.87–3.12 Å. In the third Tm site, Tm is bonded in a 12-coordinate geometry to four equivalent Os and ten Ge atoms. All Tm–Os bond lengths are 3.27 Å. There are a spread of Tm–Ge bond distances ranging from 3.27–3.41 Å. Os is bonded in a 10-coordinate geometry to five Tm and five Ge atoms. There are a spread of Os–Ge bond distances ranging from 2.45–2.61 Å. There are three inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to six Tm, two equivalent Os, and one Ge atom. The Ge–Ge bond length is 2.48 Å. In the second Ge site, Ge is bonded in a 2-coordinate geometry to five Tm, two equivalent Os, and one Ge atom. The Ge–Ge bond length is 2.55 Å. In the third Ge site, Ge is bonded in a 2-coordinate geometry to four Tm, two equivalent Os, and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.88 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Y5(Si7Os2)2 by Materials Project

Y5(Os2Si7)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent Y3+ sites. In the first Y3+ site, Y3+ is bonded to two equivalent Os+1.75- and ten Si+0.57- atoms to form a mixture of distorted edge, face, and corner-sharing YSi10Os2 cuboctahedra. There are one shorter (3.16 Å) and one longer (3.17 Å) Y–Os bond lengths. There are a spread of Y–Si bond distances ranging from 2.99–3.20 Å. In the second Y3+ site, Y3+ is bonded to two equivalent Os+1.75- and ten Si+0.57- atoms to form a mixture of distorted edge, face, and corner-sharing YSi10Os2 cuboctahedra. There are one shorter (3.16 Å) and one longer (3.18 Å) Y–Os bond lengths. There are a spread of Y–Si bond distances ranging from 2.98–3.16 Å. In the third Y3+ site, Y3+ is bonded in a 4-coordinate geometry to six Os+1.75- and twelve Si+0.57- atoms. There are a spread of Y–Os bond distances ranging from 3.13–3.21 Å. There are a spread of Y–Si bond distances ranging from 2.99–3.20 Å. There are two inequivalent Os+1.75- sites. In the first Os+1.75- site, Os+1.75- is bonded in a 7-coordinate geometry to two equivalent Y3+ and seven Si+0.57- atoms. There are a spread of Os–Si bond distances ranging from 2.33–2.59 Å. In the second Os+1.75- site, Os+1.75- is bonded in a 5-coordinate geometry to five Y3+ and five Si+0.57- atoms. There are a spread of Os–Si bond distances ranging from 2.39–2.44 Å. There are seven inequivalent Si+0.57- sites. In the first Si+0.57- site, Si+0.57- is bonded in a 2-coordinate geometry to three Y3+, two Os+1.75-, and three Si+0.57- atoms. There are a spread of Si–Si bond distances ranging from 2.42–2.69 Å. In the second Si+0.57- site, Si+0.57- is bonded in a 1-coordinate geometry to six Y3+, one Os+1.75-, and two Si+0.57- atoms. There are one shorter (2.44 Å) and one longer (2.46 Å) Si–Si bond lengths. In the third Si+0.57- site, Si+0.57- is bonded in a 8-coordinate geometry to six Y3+ and two Si+0.57- atoms. The Si–Si bond length is 2.41 Å. In the fourth Si+0.57- site, Si+0.57- is bonded in a 2-coordinate geometry to three Y3+, two Os+1.75-, and three Si+0.57- atoms. There are one shorter (2.44 Å) and one longer (2.70 Å) Si–Si bond lengths. In the fifth Si+0.57- site, Si+0.57- is bonded in a 2-coordinate geometry to three Y3+, two Os+1.75-, and three Si+0.57- atoms. There are one shorter (2.56 Å) and one longer (2.69 Å) Si–Si bond lengths. In the sixth Si+0.57- site, Si+0.57- is bonded in a 1-coordinate geometry to three Y3+, two Os+1.75-, and three Si+0.57- atoms. The Si–Si bond length is 2.68 Å. In the seventh Si+0.57- site, Si+0.57- is bonded in a 5-coordinate geometry to two equivalent Y3+, three equivalent Os+1.75-, and four Si+0.57- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2025

Influence of the chiral magnetic effect on particle-pair elliptic anisotropy

The chiral magnetic effect (CME) is a phenomenon in which electric charge is separated by a strong magnetic field from local domains of chirality imbalance in quantum chromodynamics. The CME-sensitive, azimuthal correlator difference Δ⁢𝛾 between opposite-sign (OS) and same-sign (SS) charged hadron pairs is contaminated by a major physics background proportional to the particle elliptic anisotropy (𝑣 2 ). The CME signal, on the other hand, contributes to the difference in the pair elliptic anisotropies between OS and SS pairs (Δ⁢ 𝑣 2,pair ). We investigate Δ⁢ 𝑣 2,pair and find its sensitivity to CME to be similar to that of the Δ⁢𝛾 observable.

Particle correlations & fluctuations↗