Lanthanum tetrazinc, LaZn<sub>4</sub>

Oshchapovsky, Igor; Pavlyuk, Volodymyr; Dmytriv, Grygoriy; Griffin, Alexandra

doi:10.1107/s0108270112020367

Cited by 16 publications

(10 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…clusters. Earlier, we also observed that, in the binary phase LaZn 4 , the La atom was surrounded only by Zn atoms, forming an 18-vertex cluster (Oshchapovsky et al, 2012). The packing of the 16-vertex clusters and 18-vertex pseudo-Frank-Kasper polyhedra in the unit cell of both structures is shown in Fig.…”

Section: Commentmentioning

confidence: 51%

Tm_2.22Co₆Sn₂₀and TmLi₂Co₆Sn₂₀stannides as disordered derivatives of the Cr₂₃C₆structure type

Stetskiv

Rozdzynska-Kielbik

Pavlyuk

2013

Acta Crystallogr C Cryst Struct Commun

Self Cite

View full text Add to dashboard Cite

A new ternary dithulium hexacobalt icosastannide, Tm2.22Co6Sn20, and a new quaternary thulium dilithium hexacobalt icosastannide, TmLi2Co6Sn20, crystallize as disordered variants of the binary cubic Cr23C6 structure type (cF116). 48 Sn atoms occupy sites of m.m2 symmetry, 32 Sn atoms sites of .3m symmetry, 24 Co atoms sites of 4m.m symmetry, eight Li (or Tm in the case of the ternary phase) atoms sites of -3 symmetry and four Tm atoms sites of m3m symmetry. The environment of one Tm atom is an 18-vertex polyhedron and that of the second Tm (or Li) atom is a 16-vertex polyhedron. Tetragonal antiprismatic coordination is observed for the Co atoms. Two Sn atoms are enclosed in a heavily deformed bicapped hexagonal prism and a monocapped hexagonal prism, respectively, and the environment of the third Sn atom is a 12-vertex polyhedron. The electronic structures of both title compounds were calculated using the tight-binding linear muffin-tin orbital method in the atomic spheres approximation (TB-LMTO-ASA). Metallic bonding is dominant in these compounds, but the presence of Sn-Sn covalent dumbbells is also observed.

show abstract

Section: Commentmentioning

confidence: 51%

Tm_2.22Co₆Sn₂₀and TmLi₂Co₆Sn₂₀stannides as disordered derivatives of the Cr₂₃C₆structure type

Stetskiv

Rozdzynska-Kielbik

Pavlyuk

2013

Acta Crystallogr C Cryst Struct Commun

Self Cite

View full text Add to dashboard Cite

show abstract

“…These states are mainly close to the lower valence band from –12 to –5 eV for Li 0.22 Zn 0.89 O in comparison to ZnO (from –7 to 0 eV). It should be noted that these oxides, like other zinc intermetallic phases earlier studied by us, get the greatest contribution to the density of states in the lower valence band from 3d‐type states of the zinc atoms 13–17. Crystal orbital Hamilton population (COHP) and integrated COHP (iCOHP) calculations were used to obtain a quantitative evaluation of the bonding strength between the different types of atoms in both the ternary and the binary structures (see Figure 4, c–f, and Table 2).…”

Section: Resultsmentioning

confidence: 69%

Synthesis of 5‐Hydroxymethylfurural from Carbohydrates using Large‐Pore Mesoporous Tin Phosphate

et al. 2014

View full text Add to dashboard Cite

A large-pore mesoporous tin phosphate (LPSnP-1) material has been synthesized hydrothermally by using Pluronic P123 as the structure-directing agent. The material is composed of aggregated nanoparticles of 10-15 nm in diameter and has a BET surface area of 216 m(2) g(-1) with an average pore diameter of 10.4 nm. This pore diameter is twice as large as that of mesoporous tin phosphate materials synthesized through the surfactant-templating pathways reported previously. LPSnP-1 shows excellent catalytic activity for the conversion of fructose, glucose, sucrose, cellobiose, and cellulose to 5-hydroxymethylfurfural (HMF) in a water/methyl isobutyl ketone biphasic solvent to give maximum yields of HMF of 77, 50, 51, 39, and 32 mol %, respectively, under microwave-assisted heating at 423 K. Under comparable reaction conditions, LPSnP-1 gives 12 % more HMF yield than a small-pore mesoporous tin phosphate catalyst that has an identical framework composition. This confirms the beneficial role of large mesopores and nanoscale particle morphology in catalytic reactions that involve bulky natural carbohydrate molecules.

show abstract

“…The structure solution corresponds to the Cmcm space group and a model consistent with the structure type of PbSbO 2 Cl. The orthorhombic superstructure observed occurs in oxyhalides and is found rarely in intermetallics, e.g., in LaZn 4 [31] and SrPdGa 3 [35]. Similar to CeCuAl 3 a small Ag/Al mixing occurs on the Ag site along with a weak (ca.…”

Section: Crystal Structurementioning

confidence: 97%

Single crystal growth of CeTAl3 (T = Cu, Ag, Au, Pd and Pt)

Senyshyn

Regnat

Duvinage

et al. 2016

Journal of Alloys and Compounds

View full text Add to dashboard Cite

We report single crystal growth of the series of CeT Al 3 compounds with T = Cu, Ag, Au, Pd and Pt by means of optical float zoning. High crystalline quality was confirmed in a thorough characterization process. With the exception of CeAgAl 3 , all compounds crystallize in the non-centrosymmetric tetragonal BaNiSn 3 structure (space group: I4mm, No. 107), whereas CeAgAl 3 adopts the related orthorhombic PbSbO 2 Cl structure (Cmcm, No. 63). An attempt to grow CeNiAl 3 resulted in the composition CeNi 2 Al 5 . Low temperature resistivity measurements down to ∼0.1 K did not reveal evidence suggestive of magnetic order in CePtAl 3 and CePdAl 3 . In contrast, CeAuAl 3 , CeCuAl 3 and CeAgAl 3 display signatures of magnetic transitions at 1.3 K, 2.1 K and 3.2 K, respectively. This is consistent with previous reports of antiferromagnetic order in CeAuAl 3 , and CeCuAl 3 as well as ferromagnetism in CeAgAl 3 , respectively.

show abstract

Lanthanum tetrazinc, LaZn₄

Cited by 16 publications

References 14 publications

Tm_2.22Co₆Sn₂₀and TmLi₂Co₆Sn₂₀stannides as disordered derivatives of the Cr₂₃C₆structure type

Tm_2.22Co₆Sn₂₀and TmLi₂Co₆Sn₂₀stannides as disordered derivatives of the Cr₂₃C₆structure type

Synthesis of 5‐Hydroxymethylfurural from Carbohydrates using Large‐Pore Mesoporous Tin Phosphate

Single crystal growth of CeTAl3 (T = Cu, Ag, Au, Pd and Pt)

Contact Info

Product

Resources

About

Lanthanum tetrazinc, LaZn4

Cited by 16 publications

References 14 publications

Tm2.22Co6Sn20and TmLi2Co6Sn20stannides as disordered derivatives of the Cr23C6structure type

Tm2.22Co6Sn20and TmLi2Co6Sn20stannides as disordered derivatives of the Cr23C6structure type

Synthesis of 5‐Hydroxymethylfurural from Carbohydrates using Large‐Pore Mesoporous Tin Phosphate

Single crystal growth of CeTAl3 (T = Cu, Ag, Au, Pd and Pt)

Contact Info

Product

Resources

About

Lanthanum tetrazinc, LaZn₄

Tm_2.22Co₆Sn₂₀and TmLi₂Co₆Sn₂₀stannides as disordered derivatives of the Cr₂₃C₆structure type

Tm_2.22Co₆Sn₂₀and TmLi₂Co₆Sn₂₀stannides as disordered derivatives of the Cr₂₃C₆structure type