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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 für Naturforschung B 2020. [DOI: 10.1515/znb-2020-0125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [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] [What about the content of this article? (0)] [Affiliation(s)] [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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Langenmaier M, Wissinger S, Röhr C. K
6
In
2
Q
6
(
Q
= S, Se, Te): Missing Links in the Series of Alkali Chalcogenido Ditrielates(III). Z Anorg Allg Chem 2019. [DOI: 10.1002/zaac.201900180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Michael Langenmaier
- Institut für Anorganische und Analytische Chemie Universität Freiburg Albertstr. 21 79104 Freiburg Germany
| | - S. Wissinger
- Institut für Anorganische und Analytische Chemie Universität Freiburg Albertstr. 21 79104 Freiburg Germany
| | - Caroline Röhr
- Institut für Anorganische und Analytische Chemie Universität Freiburg Albertstr. 21 79104 Freiburg Germany
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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 für Naturforschung B 2019. [DOI: 10.1515/znb-2019-0104] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [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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Langenmaier M. Synthesis and crystal structure of new alkali chalcogenido manganates/indates. Acta Crystallogr A Found Adv 2019. [DOI: 10.1107/s2053273319093276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Langenmaier M, Rackl T, Johrendt D, Röhr C. Alkali chalcogenido ortho manganates(II) A
6MnQ
4 (A=Rb, Cs; Q=S, Se, Te). Zeitschrift für Naturforschung B 2018. [DOI: 10.1515/znb-2018-0138] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Abstract
The six isotypic alkali ortho chalcogenido manganates A
6[MnII
Q
4] (A=Rb, Cs; Q=S, Se, Te) were synthesized – in most cases in pure phase – from stoichiometric mixtures of the manganese monochalcogenides MnQ, the elemental chalcogens and Rb2S/Cs2S2 (sulfido salts) or the pure alkali elements (selenido and tellurido salts) as alkali sources at maximum temperatures between 650 and 800°C. Their hexagonal crystal structures were refined by means of X-ray single crystal data (space group P63
mc, Na6ZnO4-type structure, Z=2; A/Q: Rb/S: a=1019.34(2), c=792.560(10) pm, R1=0.0166; Rb/Se: a=1055.74(2), c=821.14(2) pm, R1=0.0275; Rb/Te: a=1126.68(2), c=860.54(2) pm, R1=0.0152; Cs/S: a=1056.68(2), c=831.22(2) pm, R1=0.0168; Cs/Se: a=1096.04(3), c=858.13(2) pm, R1=0.0194; and Cs/Te: a=1167.72(3), c=896.95(2) pm, R1=0.0140). The chiral structures contain isolated C
3 symmetric, but very close to ideal tetrahedral, ortho manganate(II) anions [MnII
Q
4]6− with Mn–Q distances of 248.7–250.7 (Q=S), 260.7–263.0 (Q=Se) and 280.0–282.4 pm (Q=Te). The chalcogenide ions form a hexagonal closed packing with slightly puckered 36 nets, in which the A(2) cations occupy 3/4 of the octahedral interstices, whereas Mn takes 1/8 and A(1) 3/8 of the tetrahedral voids. Magnetic measurements on the three Cs compounds showed Curie-Weiss behavior down to a temperature of 1.9 K, with magnetic moments significantly reduced with respect to the expected spin-only value of a d
5 ion. The electronic band structures of the four salts (Na/Rb)6Mn(S/Te)4, which were calculated within the GGA+U approach, allow a comparison of the chemical bonding characteristics and the magnetic properties within the alkali cation and the chalcogenido ligand series.
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Affiliation(s)
- Michael Langenmaier
- Institut für Anorganische und Analytische Chemie, Universität Freiburg, Albertstrasse 21 , D-79104 Freiburg , Germany
| | - Tobias Rackl
- Department Chemie , Ludwig-Maximilians-Universität München, Butenandtstr. 5-13 , D-81377 München , Germany
| | - Dirk Johrendt
- Department Chemie , Ludwig-Maximilians-Universität München, Butenandtstr. 5-13 , D-81377 München , Germany
| | - Caroline Röhr
- Institut für Anorganische und Analytische Chemie, Universität Freiburg, Albertstrasse 21 , D-79104 Freiburg , Germany
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Na S, Bauß A, Langenmaier M, Koslowski T. Thermodynamic integration network study of electron transfer: from proteins to aggregates. Phys Chem Chem Phys 2017; 19:18938-18947. [DOI: 10.1039/c7cp03030d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe electron transfer through the NrfHA nitrite reductase using a thermodynamic integration scheme. Driving forces are hardly affected by dimerization, but the transport mechanism only emerges simulating the dimer.
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Affiliation(s)
- Sehee Na
- Institut für Physikalische Chemie
- Universität Freiburg
- D-79104 Freiburg im Breisgau
- Germany
| | - Anna Bauß
- Institut für Physikalische Chemie
- Universität Freiburg
- D-79104 Freiburg im Breisgau
- Germany
| | - Michael Langenmaier
- Institut für Physikalische Chemie
- Universität Freiburg
- D-79104 Freiburg im Breisgau
- Germany
| | - Thorsten Koslowski
- Institut für Physikalische Chemie
- Universität Freiburg
- D-79104 Freiburg im Breisgau
- Germany
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Bauß A, Langenmaier M, Strittmatter E, Plattner DA, Koslowski T. Thermodynamic Integration Networks and Their Application to Charge Transfer Reactions within the AauDyPI Fungal Peroxidase. J Phys Chem B 2016; 120:4937-44. [DOI: 10.1021/acs.jpcb.6b03327] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Anna Bauß
- Institut
für Physikalische Chemie, Universität Freiburg, Albertstraße
23a, D-79104 Freiburg
im Breisgau, Germany
| | - Michael Langenmaier
- Institut
für Physikalische Chemie, Universität Freiburg, Albertstraße
23a, D-79104 Freiburg
im Breisgau, Germany
| | - Eric Strittmatter
- Institut
für Organische Chemie, Universität Freiburg, Albertstraße
21, D-79104 Freiburg
im Breisgau, Germany
| | - Dietmar A. Plattner
- Institut
für Organische Chemie, Universität Freiburg, Albertstraße
21, D-79104 Freiburg
im Breisgau, Germany
| | - Thorsten Koslowski
- Institut
für Physikalische Chemie, Universität Freiburg, Albertstraße
23a, D-79104 Freiburg
im Breisgau, Germany
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Jehle M, Dürr I, Fink S, Lang B, Langenmaier M, Steckhan J, Röhr C. New members of theA2M′M2″structure family (A=Ca, Sr, Yb, La;M′=In,Sn,Pb;M″=Si,Ge). J SOLID STATE CHEM 2015. [DOI: 10.1016/j.jssc.2014.10.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Jehle M, Langenmaier M, Steckhan J, Röhr C. Mixed Alkaline Earth Germanides A 2MGe 2(A= Ca/Sr; M= Sn,Pb). Acta Crystallogr A Found Adv 2014. [DOI: 10.1107/s2053273314082989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The crystal structures of the mixed alkaline earth tetrelides with the composition (CaxSr1-x)2MGe2 (M= Sn,Pb) exhibit identically stacked planes consisting of square planar coordinated M atoms (light gray) and [Ge]m zigzag chain pieces of varying lengths m. Each Ge atom is thereby coordinated by A atoms forming trigonal prisms (dark gray). The chain length m depends on the radius ratio rM4-/rA2+ (rr), whereat the M4- radius was estimated from the average Ca-M distances in the structures of Ca2M, which exhibit isolated tetrel anions. Depending on this radius ratio the structures of the title compounds feature [Ge]m chains of lengths m of 2, 4, 6 and infinite. Starting with Ge-Ge dumbbells in Ca2SnGe2 (rr= 1.57, space group P4/mbm, a= 748.58(13), c= 445.59)(8) pm, R1= 0.060, Mo2FeB2 type; cf. also Yb2SnGe2 [1], fig. top left), (Ca0.58Sr0.42)2SnGe2 shows Ge4 zigzag chain pieces (rr= 1.50, Pbam, a= 781.01(2), b= 1477.95(3), c= 457.00(1) pm, R1= 0.018, La2NiIn2 type; cf. also (Ca0.34Eu0.66)2PbGe2 [2], fig. bottom left). Ge6 pieces are present in (Ca0.23Sr0.77)2PbGe2 (rr= 1.48, Pbam, a= 2311.20(15), b= 791.64(5), c= 458.53(3) pm, R1= 0.073, new type, fig. top right) and infinit Ge chains in (CaxSr1-x)2PbGe2 (rr= 1.44-1.46, x= 0 to 0.22, Cmmm; for x= 0: a= 402.36(11), b= 1542.29(42), c= 463.27(10) pm, R1= 0.064, Mn2AlB2 type; cf. also (Sr0.21Eu0.79)2PbGe2 [2], fig. bottom right). In this series, i.e. with increasing m, the connectivity of M changes from a square planar coordination by four Ge in Ca2SnGe2 ([MGe4]) via [MGe3M] in (Ca0.58Sr0.42)2SnGe2 and [MGe3M]2[MGe2M2] in (Ca0.23Sr0.77)2PbGe2 up to [MGe2M2] in Sr2PbGe2, finally. The details of chemical bonding are discussed on the basis of band structure calculations.
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