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Langenmaier M, Brantl J, Röhr C. Mixed Mn/In chalcogenides A3(MnIIInIII)3IQ4 (A = Na, K, Rb, Cs; Q = S, Se, Te). J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2020.121455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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2
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Langenmaier M, Brantl J, Röhr C. New sodium-rich mixed Mn/In chalcogenido metallates Na
12
MnIn
2
Q
10
(Q = S, Se). ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2020. [DOI: 10.1515/znb-2020-0125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The sodium-rich sulfido and selenido metallates Na12MnIn2
Q
10 (Q = S/Se) were synthesized in pure phase from melts composed of stoichiometric quantities of the manganese monochalcogenides MnQ, elemental indium and the chalcogens together with either Na2S (Q = S) or elemental sodium (Q = Se) as starting material. The samples were heated up to maximum temperatures of 1000/900 °C under an argon atmosphere; crystallization was achieved by slow cooling rates of 10 K h−1. The two isotypic compounds (monoclinic, space group P21/m, a = 678.26(2)/698.85(10), b = 2202.77(7)/2298.7(3), c = 766.39(3)/800.59(13) pm, β = 90.232(2)/90.147(5)°, Z = 2, R1 = 0.0516/0.0575) crystallize in a new structure type. According to the division of the formula as Na12[InQ
4][MnInQ
6] the salts contain ortho indate anions [InIII
Q
4]5− besides hetero-bimetallic dimers [MnIIInIII
Q
6]7−, which consist of two edge-sharing [MQ
4] tetrahedra. The seven crystallographically different sodium cations exhibit an either tetrahedral or octahedral coordination by the chalcogen atoms. Thus, the overall structure of the salt is best described by a hexagonal close packing of the sulfide/selenide anions, in which the octahedral voids of every second interlayer section are fully occupied by the (overall 5/f.u.) Na
+
positions with CN = 6. In the other half of the interlayer sheets, all tetrahedral voids (overall 10/f.u.) are occupied by the seven CN = 4 Na
+
cations, one In3+ of the ortho anion and the two Mn2+/In3+ cations (which statistically occupy one crystallographic site). This structure relation is also verified by a Bärnighausen group-subgroup tree connecting the h.c.p. (Mg type) aristotype (with its tetrahedral and octahedral voids) by an overall index of 60 with the structure of the two title compounds.
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Affiliation(s)
- Michael Langenmaier
- Institut für Anorganische und Analytische Chemie, Universität Freiburg , Freiburg , Germany
| | - Julian Brantl
- Institut für Anorganische und Analytische Chemie, Universität Freiburg , Freiburg , Germany
| | - Caroline Röhr
- Institut für Anorganische und Analytische Chemie, Universität Freiburg , Freiburg , Germany
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Langenmaier M, Wissinger S, Röhr C. K
5
[InSe
4
] and K
12
[InS
4
]
2
(S): New Alkali Chalcogenido Indates with [In
Q
4
]
5
–
ortho
Anions. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.202000080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Michael Langenmaier
- Institut für Anorganische und Analytische Chemie Albert‐Ludwigs‐Universität Freiburg Albertstr. 21 79104 Freiburg Germany
| | - Sarah Wissinger
- Institut für Anorganische und Analytische Chemie Albert‐Ludwigs‐Universität Freiburg Albertstr. 21 79104 Freiburg Germany
| | - Caroline Röhr
- Institut für Anorganische und Analytische Chemie Albert‐Ludwigs‐Universität Freiburg Albertstr. 21 79104 Freiburg Germany
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4
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Langenmaier M, Röhr C. The new sodium tellurido manganates(II) Na 2Mn 2Te 3, Na 2Mn 3Te 4, Na 2
AMnTe 3 ( A=K, Rb), and NaCsMnTe 2. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2019. [DOI: 10.1515/znb-2019-0104] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
A series of new sodium and mixed Na/A (A = K, Rb, Cs) tellurido manganates have been synthesized from melts of the pure elements (or MnTe) at maximum temperatures of 600–1000°C. The monoclinic crystal structures of the two pure sodium salts Na2Mn2Te3 (space group C2/c, a = 1653.68(2), b = 1482.57(2), c = 773.620(10) pm, β = 117.52°, Z = 8, R1 = 0.0225) and Na2Mn3Te4 (space group C2/m, a = 1701.99(3), b = 438.741(8), c = 691.226(12) pm, β = 90.3171(8)°, Z = 2, R1 = 0.0270) are both based on a hexagonal close packed Te2− arrangement. Na2Mn2Te3 is isotypic with Na2Mn2S3 and Na2Mn2Se3 and contains layers of [MnTe4] tetrahedra, which are connected via common edges to form tetramers [Mn4Te6]. These tetramers are further connected via μ
3-Te atoms. Na2Mn3Te4 crystallizes in a new structure type, recently also reported for the selenido salt Na2Mn3Se4. Mn(2) forms ribbons of vertex-sharing dinuclear units
∞
1
[
Te
2
/
2
MnTe
2
MnTe
2
/
2
]
$_\infty ^1[{\rm{T}}{{\rm{e}}_{2/2}}{\rm{MnT}}{{\rm{e}}_2}{\rm{MnT}}{{\rm{e}}_{2/2}}]$
running along the short b axis of the monoclinic cell. The Te atoms of these ribbons are also the ligands of edge-sharing [Mn(1)Te6] chains of octahedra. Similar to Na2Mn2Te3, the Na+ cations are octahedrally coordinated and the cations occupy tetrahedral (Mn2+) and octahedral (Na+, Mn2+) voids in the close Te2− packing. The isotypic K/Rb salts Na2
AMnTe3 crystallize in a new structure type (orthorhombic, space group Pmc21, a = 1069.70(4)/1064.34(2), b = 1350.24(5)/1350.47(3), c = 1238.82(4)/1236.94(3) pm, Z = 4, R1 = 0.0445/0.0210). In contrast to the simple formula indicating a Mn(III) compound, the complex structure contains one layer consisting of undulated chains of edge-sharing tetrahedra
∞
1
[
Mn
II
Te
4
/
2
]
$_\infty ^1[{\rm{M}}{{\rm{n}}^{{\rm{II}}}}{\rm{T}}{{\rm{e}}_{4/2}}]$
separated by free ditelluride dumbbells [Te2]2− and a second layer containing a complex chain of edge- and vertex-sharing [MnIITe4] tetrahedra, in which Mn(II) is coordinated to μ
1- and μ
2-Te2− ligands and an η
1-ditellurido ligand. The cesium salt NaCsMnTe2 (orthorhombic, space group Cccm, a = 694.21(2), b = 1536.57(4), c = 664.47(2) pm, Z = 4, R1 = 0.0131) likewise forms a new structure type, which is an ordered superstructure of ThCr2Si2. Linear chains
∞
1
[
MnTe
4
/
2
]
$_\infty ^1[{\rm{MnT}}{{\rm{e}}_{4/2}}]$
of edge-sharing tetrahedra are connected with similar chains
∞
1
[
NaTe
4
/
2
]
$_\infty ^1[{\rm{NaT}}{{\rm{e}}_{4/2}}]$
to form [NaMnTe2] layers. The larger alkali cations Cs+ between the layers exhibit a cubic (CN = 8) coordination.
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Affiliation(s)
- Michael Langenmaier
- Institut für Anorganische und Analytische Chemie , Universität Freiburg , Albertstrasse 21, D-79104 Freiburg , Germany
| | - Caroline Röhr
- Institut für Anorganische und Analytische Chemie , Universität Freiburg , Albertstrasse 21, D-79104 Freiburg , Germany
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