Sr3In2P4 und Ca3ln2As4, Zintlphasen mit Bänderanionen aus kanten-und eckenverknüpften InP4- bzw. InAs4-Tetraedern/ Sr3In2P4 and Ca3In2As4, Zintl Phases with Strings of InP4 and InAs4 Tetrahedra, Resp., Sharing Edges and Corners

1986 ◽  
Vol 41 (11) ◽  
pp. 1416-1419 ◽  
Author(s):  
Gerhard Cordier ◽  
Herbert Schäfer ◽  
Michael Stelter
Keyword(s):  
Zintl Phases ◽  
Orthorhombic System ◽  
Space Group ◽  
Lattice Constants ◽  
Partial Lattice ◽  
New Compounds

Abstract The new compounds Sr3In2P4 and Ca3In2As4 crystallize in the orthorhombic system , space group Pnnm (No. 58), with the following lattice constants:Sr3In2P4: a = 1632.3(6), b = 682.8(3), c = 428.9(2);Ca3In2As4: a = 1621.2(6), b = 659.5(3), c = 430.6(2).In the anionic partial lattice InP4 (InAs4) tetrahedra are connected by common edges and corners and form (InP23-)n ((In As23-)n) strings of alternating four-membered and eight-membered rings.

scholarly journals Perantimonidogallate und -indate: Zur Kenntnis von Ca5Ga2Sb6 , Ca5In2Sb6 und Sr5In2Sb6 / Ca5Ga2Sb6, Ca5In2Sb6 and Sr5In2Sb6 : the First Perantimonidogallate and -indates

1985 ◽  
Vol 40 (1) ◽  
pp. 5-8 ◽  
Author(s):  
Gerhard Cordier ◽  
Herbert Schäfer ◽  
Michael Stelter
Keyword(s):  
Alkaline Earth ◽  
Zintl Phases ◽  
Orthorhombic System ◽  
Space Group ◽  
Lattice Constants ◽  
New Compounds

The new compounds Ca5Ga2Sb6, Ca5In2Sb6 and Sr5In2Sb6 crystallize in the orthorhombic system (space group: Pbam, No. 55) with the lattice constants:Ca5Ga2Sb6: a = 1402.1(5) pm, b = 1210.6(4) pm, c = 445.2(2) pm;Ca5In2Sb6: a = 1425.6(5) pm, b = 1213.3(4) pm, c = 457.2(2) pm;Sr5In2Sb6: a = 1474.9(5) pm, b = 1269.6(4) pm, c = 466.0(2) pm.In the structures there are anionic E(III)2E(V)6-strings, compensated by the alkaline earth ions. The compounds belong to the Zintl phases

Neue Zintlphasen: Ba3GaSb3, Ca3GaAs3 und Ca3InP3 / On New Zintlphases: Ba3GaSb3, Ca3GaAs3 und Ca3InP3

1985 ◽  
Vol 40 (9) ◽  
pp. 1100-1104 ◽  
Author(s):  
Gerhard Cordier ◽  
Herbert Schäfer ◽  
Michael Steher
Keyword(s):  
Zintl Phases ◽  
Common Edge ◽  
Orthorhombic System ◽  
Space Group ◽  
Lattice Constants ◽  
New Compounds

The new compounds Ca3GaAs3 and Ca3InP3 crystallize in the orthorhombic system, space group Pnma (No. 62) with the lattice constants Ca3GaAs3: a = 1217.1(5) pm, b = 419.7(2) pm, c = 1341.4(5) pm; Ca3InP3: a = 1201.9(5) pm, b = 413.8(2) pm, c = 1346.0(5) pm.In the structures distorted GaAs4- and InP4-tetrahedra resp. are connected by common corners to chains. The new compound Ba3GaSb3 crystallizes in the orthorhom bic system, space group Pnma (No. 62) with the lattice constants a = 1411.7(5) pm, b - 2116.7(7) pm, c = 712.8(3) pm. Two distorted GaSb4-tetrahedra are connected by a common edge to isolated Ga2Sb6-groups. The three compounds belong to the Zintl phases.

Sr5Al2Sb6 und Ba5In2Sb6: Zwei neue Zintlphasen mit unterschiedlichen Bänderanionen / Sr5Al2Sb6 and Ba5In2Sb6: Two New Zintl Phases with Different Chain Anions

1988 ◽  
Vol 43 (4) ◽  
pp. 463-466 ◽  
Author(s):  
Gerhard Cordier ◽  
Michael Stelter
Keyword(s):  
Zintl Phases ◽  
Orthorhombic System ◽  
Space Group ◽  
Lattice Constants

AbstractThe compound Sr5Al2Sb6 crystallizes in the orthorhombic system (space group Pnma (No. 62)) with the lattice constants: a = 1212.4(4) pm, b = 1034.1(4) pm, c = 1340.9(5) pm. AlSb4 tetrahedra are connected via common edges and corners to chains. Every second terminal Sb atom of the chain is connected to another Sb atom, such that end-on Sb2 groups and terminal Sb alternate. The compound Ba5In2Sb6 crystallizes in the orthorhombic system (space group Pbam (No. 55)). The lattice constants are: a = 1530.7(6) pm, b = 1335.8(5) pm, c = 478.6(2) pm. In the structure, InSb4 tetrahedra are connected via common corners and Sb2 groups to form double chains. Both compounds are classified as Zintl phases.

Ca3AlSb3 und Ca5Al2Bi6, zwei neue Zintlphasen mit kettenförmigen Anionen / New Zintl Phases with Chain Anions: On Ca3AlSb3 and Ca5Al2Bi6

1984 ◽  
Vol 39 (6) ◽  
pp. 727-732 ◽  
Author(s):  
Gerhard Cordier ◽  
Herbert Schäfer ◽  
Michael Stelter
Keyword(s):  
Zintl Phases ◽  
Orthorhombic System ◽  
Space Group ◽  
Lattice Constants

AbstractThe new compound Ca3AlSb3 crystallizes in the orthorhombic system (space group Pnma (No. 62)) with lattice constantsa = 1283.5(5) pm, b = 448.9(2) pm , c = 1428.2(5) pmIn the structure there are AlSb4 tetrahedra connected by common corners to form chains. The new compound Ca5Al2Bi6 crystallizes in the orthorhombic system, too (space group Pbam (No. 55)) with lattice constantsa = 2333.3(8) pm, b = 758.2(3) pm, c = 452.9(2) pmAlBi4 tetrahedra are connected by common corners and Bi2 groups to form double chains. Both compounds are classified as Zintl phases.

Sr3GaSb3 und Sr3InP3, zwei neue Zintlphasen mit komplexen Anionen / Sr3GaSb3 and Sr3InP3, Two New Zintl Phases with Complex Anions

1987 ◽  
Vol 42 (10) ◽  
pp. 1268-1272 ◽  
Author(s):  
Gerhard Cordier ◽  
Herbert Schäfer ◽  
Michael Stelter
Keyword(s):  
Zintl Phases ◽  
Monoclinic System ◽  
Orthorhombic System ◽  
Space Group ◽  
Lattice Constants ◽  
Complex Anions

Abstract The new compound Sr3GaSb3 crystallizes in the monoclinic system, space group P21/n (No. 14) with the lattice constants: a = 1176.2(4) pm, b = 1450.9(5) pm, c = 1174.9(4) pm, β = 110.0(1)°. In the structure distorted GaSb4 tetrahedra are connected by common corners, to give strands with groups of four tetrahedra as the repeating unit. The new compound Sr3InP, crystallizes in the orthorhombic system, space group Pnma (No. 62) with the lattice constants: a = 1280.9(5) pm, b = 433.0(2) pm, c =1386.6(5) pm. In the structure distorted InP4 tetrahedra are connected by common corners, to give strands with one tetrahedron as the repeating unit. Both compounds are Zintl phases.

scholarly journals Kristallstruktur und Schwingungsspektrum des Thallium(I)-Zinn(II)-ortho-Thiophosphates TlSnPS4

1987 ◽  
Vol 42 (11) ◽  
pp. 1309-1312 ◽  
Author(s):  
Robert Becker ◽  
Wolfgang Brockner ◽  
Brigitte Eisenmann
Keyword(s):  
Raman Spectrum ◽  
Melting Point ◽  
Title Compound ◽  
Far Infrared ◽  
Orthorhombic System ◽  
Space Group ◽  
Lattice Constants ◽  
Moisture Sensitive

TlSnPS4 crystallizes in the orthorhombic system, space group Pna21 (Nr. 33), Z = 4 with the lattice constants a = 1175.8 (5) pm, b = 890.1 (4) pm, c = 663.3 (4) pm. In the structure are sligthly distorted discrete PS3-4 anions.The far infrared, infrared and Raman spectrum is assigned on the basis of PS3-4 -units with C3v symmetry. According to the DTA data the melting point for TlSnPS4 is 575 ± 5 °C. The title compound is not moisture sensitive and semi-conducting.

K2SiP2, ein Phosphidopolysilikat(IV) / K2SiP2, a Phosphidopolysilicate (IV)

1984 ◽  
Vol 39 (6) ◽  
pp. 736-738 ◽  
Author(s):  
Brigitte Eisenmann ◽  
Mehmet Somer
Keyword(s):  
Unit Cell ◽  
Compound K ◽  
Orthorhombic System ◽  
Space Group ◽  
Lattice Constants

AbstractThe new compound K2SiP2 crystallizes in the orthorhombic system , space group Ibam. The unit cell with the lattice constantsa = 1292.6(6) pm, b - 686.7(4) pm, c - 610.7(4) pmcontains 4 formula units. In the structure SiP4 tetrahedra form chains by sharing common edges. The [(SiP2)2-] strings are isosteric to the SiS2 molecules.

Dimere und polymere Pnictidostannat(IV)-Anionen -Darstellung und Kristallstrukturen von Na2K3[SnP3], Na2Cs3[SnP3] und Na2K3[SnBi3] / Dimeric and Polymeric Pnictidostannate(IV) Anions -Preparation and Crystal Structures of Na2K3[SnP3], Na2Cs3[SnP3] and Na2K3[SnBi3]

1998 ◽  
Vol 53 (4) ◽  
pp. 405-410 ◽  
Author(s):  
Matthias Asbrand ◽  
Brigitte Eisenmann ◽  
Holger Engelhardt ◽  
Ute Rößler
Keyword(s):  
Crystal Structures ◽  
Covalent Bonding ◽  
Partial Structure ◽  
Alkali Cations ◽  
Orthorhombic System ◽  
Space Group ◽  
Lattice Constants ◽  
Tetrahedral Voids ◽  
Sodium And Potassium

Abstract The metallic lustrous compounds Na2K3[SnP3], Na2Cs3[SnP3], and Na2K3[SnBi3] were prepared from melts of mixtures of the elements. The isotypic compounds Na2K3[SnP3] and Na2Cs3[SnP3] crystallize in the orthorhombic system, space group Cmca (No 64), Z = 8, with lattice constants a = 1996.1 (4)/2047.9(4) pm, b = 669.5(1)/686.5(2) pm, c = 1494.5(2)/1617.8(3) pm. The structure is characterized by dimeric units [Sn2P6] 10- of edge-sharing [SnP4] tetrahe­dra, which are coordinated by the alkali cations. Na2K3[SnBi3] crystallizes in the orthorhombic system, space group Ibca (No 73), Z = 8, with lattice constants a = 718.2(1) pm , b -1692.6(2) pm, c = 2159.5(2) pm. In the anionic partial structure [SnBi4] tetrahedra are connected via common corners to infinite 1∞[SnBi3]5- Zweier single chains. The sodium and potassium cat­ ions separate the chains from each other. Neglecting the distortions caused by covalent bonding and different radii both structure types can be classified as superstructure defect variants of the Li3Bi structure. Different orderings in the occupation of the tetrahedral voids lead to the variants in the anionic assemblies.

Ba5(Al/Ga)5(Sn/Pb): Neue Verbindungen an der Zintl-Grenze / Ba5(Al/Ga)5(Sn/Pb): New Compounds at the Zintl Border

2006 ◽  
Vol 61 (7) ◽  
pp. 846-853 ◽  
Author(s):  
Kristin Guttsche ◽  
Angela Rosin ◽  
Marco Wendorff ◽  
Caroline Röhr
Keyword(s):  
Structure Type ◽  
Intermetallic Phases ◽  
Zintl Phases ◽  
Orthorhombic Space Group ◽  
Space Group ◽  
Ternary Compounds ◽  
Maximum Temperatures ◽  
New Compounds ◽  
Type Orthorhombic ◽  
Structural Aspects

The new isotypic intermetallic phases Ba5MIII5MIV (MIII = Al, Ga; MIV = Sn, Pb) have been synthesized from stoichiometric amounts of the elements at maximum temperatures of 900 to 1000 ◦C. They crystallize in the hexagonal space group P6̄m2 (Ba5Al5Sn: a = 605.05(8), c = 1109.0(2) pm, R1 = 0.0137; Ba5Ga5Sn: a = 599.45(5), c = 1086.00(7) pm, R1 = 0.0485; Ba5Al5Pb: a = 606.9(2), c = 1112.0(4) pm, R1 = 0.0409 and Ba5Ga5Pb: a = 601.76(7), c = 1091.51(13) pm, R1 = 0.0295), forming a new structure type. Similar to the Zintl phases Ba2MIV (Co2Si structure type, orthorhombic, space group Pnma; Ba2Sn: a = 861.52(14), b = 569.85(9), c = 1056.9(2) pm, R1 = 0.0217 and Ba2Pb: a = 865.12(13), b = 569.1(2), c = 1061.8(2) pm, R1 = 0.0470), these new ternary phases contain isolated MIV atoms (coordinated by 11 Ba atoms). In addition, sheets of 3- and 4-bonded Al/Ga atoms similar to those in Ba3Al5 are present. In accordance with this, a formal subdivision of Ba5MIII5MIV into Ba3MIII5 ・ Ba2MIV can be performed to describe the observed intergrowth or chemical twinning of two different binary intermetallics to give the new ternary compounds. Beyond structural aspects, also the nature of the chemical bonding (as studied by FP-LAPW calculations) in these new, non-electron precise compounds in the vicinity of the Zintl border can be interpreted in this vein.

Ho4C7, Y4C7: Carbide mit C34-- und C4- -Ionen / Ho4C7, Y4C7: Carbides with C34- and C4- Ions

1994 ◽  
Vol 49 (10) ◽  
pp. 1439-1443 ◽  
Author(s):  
Hansjürgen Mattausch ◽  
Thomas Gulden ◽  
Reinhard K. Kremer ◽  
Jörg Horakh ◽  
Arndt Simon
Keyword(s):  
Single Crystals ◽  
Space Group ◽  
Lattice Constants ◽  
Carbon Species ◽  
Moisture Sensitive ◽  
New Compounds

AbstractThe new compounds Ho4C7 and Y4C7 have been prepared by reaction of stoichiometric amounts of the metals and C in closed Ta capsules at 1450 and 1300 K. respectively. With HoF3 as a flux, black, needle like single crystals of Ho4C7 were obtained, which are air and moisture sensitive. Ho4C7 crystallizes in the space group P21/n (No. 14) with lattice constants a = 368.06(3), b = 1251.8(1). c = 1364.4(2) pm and β = 96.62(1)°. Y4C7 with a = 370.08(5), b = 1258.9(1), c = 1371.8(1) and β = 96.61(1)°.Two different kinds of carbon species occur in the two structures: isolated C4- ions and C34- units, respectively. The C4- ions are octahedrally surrounded by Ho-atoms. The Ho6C octahedra are condensed to form double chains parallel [100]. The chains are linked via C34- ions, which occupy positions above the edges of the Ho octahedra. Additional Ho atoms are located in voids between the C34- units.The compounds are electrically semiconducting. Ho4C7 has a magnetic Curie-Weiss behaviour with θ= -28(4) K and µeff= 8.8(2) µB.

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