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The polyhedron is not a member of the 92 Johnson polyhedra; S. Alvarez, Dalton Trans. 2005, 2209.
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The polyhedron is not a member of the 92 Johnson polyhedra; S. Alvarez, Dalton Trans. 2005, 2209.
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42
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34250894637
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-1. The product contained the air-sensitive target compound as a crystalline powder with metallic luster. The powder X-ray diffractogram indicated the presence of small amounts of β-NaSn and another unknown phase.
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-1. The product contained the air-sensitive target compound as a crystalline powder with metallic luster. The powder X-ray diffractogram indicated the presence of small amounts of β-NaSn and another unknown phase.
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43
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34250858533
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A single crystal of Na29Zn24Sn32 was sealed in a glass capillary (0.3-mm diameter, Hilgenberg) in an argon-filled glove box. Crystal data: 0.15 x 0.05 x 0.05 mm3, a, 15.712(1, c, 9.462(1) Å, V, 2022.9(2) Å3, space group P62m (no. 189, Z, 1. ρcalcd, 4.953 g cm-3, μ(MoKα, 16.78 mm-1. Data collection: Oxford Diffraction Xcalibur3 diffractometer, 293(2) K, MoKα radiation, 2θ max, 55.58°, 15 973 reflections measured, 1801 independent reflections, Rint, 0.039, R1, 0.024 (I > 2σ(I, wR2, 0.059 (I > 2σ(I, R1= 0.027 (all data, wR 2, 0.058 (all data, The crystal structure was solved using direct methods SHELXS-97[23b, and refi
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2. There was no indication for the presence of a superstructure. Further details on the crystal structure investigations may be obtained from the Fachinformationszentrum Karlsruhe, 76344 Eggenstein-Leopoldshafen, Germany (fax: (+49)7247-808-666; e-mail: crysdata@fiz-karlsruhe.de), on quoting the depository number CSD-417144; b) G. M. Sheldrick, SHELXS-97, Program for the Solution of Crystal Structures, Universität Göttingen (Germany), 1997;
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44
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34250904394
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G. Sheldrick, SHELXL-97, Program for the Refinement of Crystal Structures, Universität Göttingen (Germany), 1997;
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c) G. Sheldrick, SHELXL-97, Program for the Refinement of Crystal Structures, Universität Göttingen (Germany), 1997;
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47
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34250896415
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48 and those determine the metallic nature of the compound.
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48 and those determine the metallic nature of the compound.
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48
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34250842842
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The average Zn-Zn distance and the Sn-Sn distance in the {Zn 8So4} cluster are d(Zn-Zn)∅, 2.759 Å and d(Sn-Sn, 3.038(1) Å. For comparison, the interatomic distance in elemental zinc is d(Zn-Zn, 2.665 Å, and the average interatomic distance in the (Sn14) substructure is d(Sn-Sn)∅, 2.909 Å. The intracluster Zn-Sn distances are d(Zn-Sn, 2.729(2)-2.856(1) Å, and the corresponding exo-cluster contacts are d(Zn-Sn, 2.724(1)-2.914(1) Å. b) Mo7Sn12Zn40[14a] contains molybdenum-centered icosahedra of composition {MoZn10Sn2} with Zn-Sn distances similar to those in Na29Zn24Sn 32
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32.
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49
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34250820115
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14} polyhedron; b R. M. Imamov, Z. G. Pinsker, Kristallografiya 1966, 11, 182.
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14} polyhedron; b) R. M. Imamov, Z. G. Pinsker, Kristallografiya 1966, 11, 182.
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50
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34250862318
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[28b] In the tetrakaidecahedron, the hexagonal faces are staggered, whereas in the present icosihexahedron they are eclipsed.
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[28b] In the tetrakaidecahedron, the hexagonal faces are staggered, whereas in the present icosihexahedron they are eclipsed.
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52
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84941382448
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[29b] b) C. Kronseder, T. F. Fässler, Angew. Chem. 1997, 109, 2800;
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55
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34250795859
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Extended Hückel calculations were carried out by using the MEHMACC software package; U. Häußermann, S. Wengert, R. Nesper, T. F. Fässler, MEHMACC, Program based on the QCPE Extended Hückel Program EHMACC, Zürich (Switzerland), 1993.
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Extended Hückel calculations were carried out by using the MEHMACC software package; U. Häußermann, S. Wengert, R. Nesper, T. F. Fässler, MEHMACC, Program based on the QCPE Extended Hückel Program EHMACC, Zürich (Switzerland), 1993.
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34250813349
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