Fachbereich 12 - Chemie und Pharmazie
Institut für Anorganische und Analytische Chemie
Prof. Dr. R. Pöttgen

Solid State Inorganic Chemistry - Materials Science

Solid state synthesis; structure determination by neutron and X-ray diffraction; magnetochemistry; transport properties; Mössbauer spectroscopy; ionic conductivity; Zintl phases; intermetallic compounds; battery materials; light metal alloys; ferromagnetic materials; elucidation of structure-property relations; group-subgroup relations

Drittmittelgeber:

Deutsche Forschungsgemeinschaft, Fonds der Chemischen Industrie, Alexander von Humboldt-Stiftung, Deutscher Akademischer Austauschdienst

Beteiligte Wissenschaftler:

Prof. Dr. F. J. DiSalvo (Cornell University), Prof. Dr. H. Eckert, Dr. M. Eschen Th. Fickenscher, Dr. Ya. V. Galadzhun (Universität Lviv, Ukraine), Dr. J. D. Garrett (McMaster University, Ontario), Dr. B. J. Gibson (MPI FKF Stuttgart), Prof. Dr. Yu. Grin (MPI CPFS Dresden), Dr. R.-D. Hoffmann, Dr. H. A. Höppe (LMU München), PD Dr. H. Huppertz (LMU München), Dr. O. Jepsen (MPI FKF Stuttgart), Prof. Dr. D. Johrendt, Prof. Dr. D. Kaczorowski (Universität Breslau), Prof. Dr. Ya. M. Kalychak (Universität Lviv, Ukraine), Dr. G. Kotzyba, Dipl.-Chem. R. Kraft, Dr. R. K. Kremer (MPI FKF Stuttgart), Dr. D. Kußmann, Prof. Dr. K. œûtka (Universität Krakau), M.Sc. M. Lukachuk, Prof. Dr. A. Mewis (Universität Düsseldorf), Dr. R. Mishra (BARC Bombay), Dr. B. D. Mosel, Dr. R. Müllmann, Dr. D. Niepmann, Prof. Dr. R. Pöttgen, Dipl.-Ing. U. Ch. Rodewald, Dr. W. Schnelle (MPI CPFS Dresden), Prof. Dr. W. Schnick (LMU München), Dr. J. Senker (LMU München), Dr. H. Trill, M.Sc. Zh. Wu, Dr. V. I. Zaremba (Universität Lviv, Ukraine)

Veröffentlichungen:

2001

AlB₂ Related Intermetallic Compounds – A Comprehensive View Based on Group-Subgroup Relations. R.-D. Hoffmann, R. Pöttgen, Z. Kristallogr. 216 (2001) 127-145.

Two-Dimensional [TIn₂] Polyanions in BaTIn₂ (T = Rh, Pd, Ir, Pt) – The Collapse of the Three-Dimensional Indium Polyanion of BaIn₂. R.-D. Hoffmann, R. Pöttgen, Chem. Eur. J. 7 (2001) 382-387.

New Indium-Rich Compounds EuRhIn₂ and EuRh₂In₈. R. Pöttgen, D. Kußmann, Z. Anorg. Allg. Chem. 627 (2001) 55-60.

Structure and Chemical Bonding of UAuGe. B. J. Gibson, R. K. Kremer, O. Jepsen, J. D. Garrett, R.-D. Hoffmann, R. Pöttgen, J. Phys. C 13 (2001) 3123-3137.

Structure and Properties of CeAuSn, Ce₃ Rh₄Sn₁₃, and Ce₃Ir₄Sn₁₃. D. Niepmann, R. Pöttgen, K. M. Poduska, F. J. DiSalvo, H. Trill, B. D. Mosel, Z. Naturforsch. 56b (2001) 1-8.

Ternary Rare Earth (RE) Gold Compounds REAuCd and RE₂Au₂Cd. R. Mishra, R. Pöttgen, R.-D. Hoffmann, D. Kaczorowski, H. Piotrowski, P. Mayer, C. Rosenhahn, B. D. Mosel, Z. Anorg. Allg. Chem. 627 (2001) 1283-1291.

Crystal Structure, Magnetic Structure, and Magnetic Properties of the Antiferromagnet HoAuGe. B. J. Gibson, R. Pöttgen, W. Schnelle, B. Ouladdiaf, R. K. Kremer, J. Phys. C 13 (2001) 2593-2606.

Structure and Properties of EuZnGa. R. Pöttgen, G. Kotzyba, F. M. Schappacher, B. D. Mosel, H. Eckert, Yu. Grin, Z. Anorg. Allg. Chem. 627 (2001) 1299-1304.

Ca₃Au_6.61Ga_4.39 – A New Gallide with a Three-Dimensional Gold-Gallium Network. D. Kußmann, R.-D. Hoffmann, R. Pöttgen, Z. Anorg. Allg. Chem. 627 (2001) 2053-2056.

Magnetism and Hyperfine Interactions in Gd₂Ni₂Mg. K. tka, R. Kmiec, A. W. Pacyna, R. Mishra, R. Pöttgen, Solid State Sciences 3 (2001) 545-558.

A ¹¹⁹Sn and ¹⁵¹Eu Mössbauer Spectroscopic, Magnetic Susceptibility, and Electrical Conductivity Investigation of the Stannides EuTSn (T = Cu, Pd, Ag, Pt). R. Müllmann, U. Ernet, B. D. Mosel, H. Eckert, R. K. Kremer, R.-D. Hoffmann, R. Pöttgen, J. Mater. Chem. 11 (2001) 1133-1140.

A Single Crystal Study of a-CeIr₂ Si₂, b-CeIr₂Si₂ and CeIr_1.968(5)Ge₂. D. Niepmann, R. Pöttgen, Intermetallics 9 (2001) 313-318.

Orthonitridoborate Ions [BN₃]^6– in Oxonitridosilicate Cages: Synthesis, Crystal Structures, and Magnetic Properties of Ba₄Pr₇[Si₁₂N₂₃O][BN₃], Ba₄Nd₇[Si₁₂N₂₃O][BN₃], and Ba₄Nd₇[Si₁₂N₂₃O][BN₃]. M. Orth, R.-D. Hoffmann, R. Pöttgen, W. Schnick, Chem. Eur. J. 7 (2001) 2791-2797.

Platinum–Germanium Ordering in UPtGe. R.-D. Hoffmann, R. Pöttgen, G. H. Lander, J. Rebizant, Solid State Sciences 3 (2001) 697-703.

New Magnesium Compounds RE ₂Cu₂Mg (RE = Y, La–Nd, Sm, Gd–Tm, Lu) with Mo₂FeB₂ Type Structure. R. Mishra, R.-D. Hoffmann, R. Pöttgen, Z. Naturforsch. 56b (2001) 239-244.

Two- and Three-Dimensional [IrSi] Networks in the Silicides Sm₃Ir₂Si₂, HoIrSi, and YbIrSi. R. Mishra, R.-D. Hoffmann, R. Pöttgen, Z. Anorg. Allg. Chem. 627 (2001) 1787-1792.

Ca₃Ni₈In₄ – An Ordered Non-Centrosymmetric Variant of the BaLi₄ Type. V. I. Zaremba, I. R. Muts, Ya. M. Kalychak, R.-D. Hoffmann, R. Pöttgen, J. Solid State Chem. 160 (2001) 415-420.

New [Ni₇] Cluster in LaNi₇In₆ and Distorted bcc Indium Cubes in LaNiIn₄. Ya. M. Kalychak, V. I. Zaremba, Ya. V. Galadzhun, Kh. Yu. Miliyanchuk, R.-D. Hoffmann, R. Pöttgen, Chem. Eur. J. 7 (2001) 5343-5349.

Synthesis and Crystal Structure of REAgMg (RE = La, Ce, Nd, Eu, Gd, Tb, Ho, Tm, and Yb). Th. Fickenscher, R. Pöttgen, J. Solid State Chem. 161 (2001) 67-72.

Secondary Au–Au and Sn–Sn Interactions in the Superstructure of YbAuSn – Missing Link in the Series of KHg₂ Superstructures. R.-D. Hoffmann, R. Pöttgen, D. Kußmann, R. Müllmann, B. D. Mosel, Chem. Mater. 13 (2001) 4019-4025.

Synthesis and Structure of YbPdSn₂. D. Kußmann, R. Pöttgen, Z. Naturforsch. 56b (2001) 446-448.

Synthesis, Structure, and Magnetic Properties of EuAgCd and YbAgCd. Th. Fickenscher, G. Kotzyba, R.-D. Hoffmann, R. Pöttgen, Z. Naturforsch. 56b (2001) 598-603.

The Stannides RERhSn (RE = Ho–Yb) and ScTSn (T = Pd, Pt) – Structure Refinements and ¹¹⁹Sn Mössbauer Spectroscopy. R. Mishra, R. Pöttgen, R.-D. Hoffmann, H. Trill, B. D. Mosel, H. Piotrowski, M. F. Zumdick, Z. Naturforsch. 56b (2001) 589-597.

New Metal-Rich Compounds NbIrSi, NbIrGe, and TaIrSi – Synthesis, Structure, and Magnetic Properties. R. Mishra, R. Pöttgen, G. Kotzyba, Z. Naturforsch. 56b (2001) 463-468.

High-Temperature Synthesis, Crystal Structure, Optical Properties, and Magnetism of the Carbidonitridosilicates Ho₂[Si₄N₆C] and Tb₂[Si₄N₆C]. H. A. Höppe, G. Kotzyba, R. Pöttgen, W. Schnick, J. Mater. Chem. 11 (2001) 3300-3306.

Synthesis and Structure of RE ₂Rh₂Cd (RE = La, Ce, Pr, Nd, Sm). F. Stadler, Th. Fickenscher, R. Pöttgen, Z. Naturforsch. 56b (2001) 1241-1244.

2002

La_1.17 Rh₃ In₂ – An Incommensurate Composite Structure. S. Esmaeilzadeh, V. I. Zaremba, Ya. M. Kalychak, R.-D. Hoffmann, R. Pöttgen, Solid State Sciences 4 (2002) 93-102.

Hyperfine Interactions in the 13 K Ferromagnet Eu₂Si₅N₈. H. A. Höppe, H. Trill, B. D. Mosel, H. Eckert, G. Kotzyba, R. Pöttgen, W. Schnick, J. Phys. Chem. Solids 63 (2002) 853-859.

Transition Metal – Tin Ordering in SrPtSn, SrAuSn, and BaAuSn and ¹¹⁹Sn Mössbauer Spectroscopy of CaPdSn, CaPtSn, and SrAuSn. R.-D. Hoffmann, R. Pöttgen, D. Kußmann, D. Niepmann, H. Trill, B. D. Mosel, Solid State Sciences 4 (2002) 481-487.

Magnetic and Electrical Properties, ¹⁵¹Eu Mössbauer Spectroscopy and Chemical Bonding of REAgMg (RE = La, Ce, Eu, Yb) and EuAuMg. D. Johrendt, G. Kotzyba, H. Trill, B. D. Mosel, H. Eckert, Th. Fickenscher, R. Pöttgen, J. Solid State Chem. 164 (2002) 201-209.

High-Pressure High-Temperature Synthesis of Ca₃Rh₄In₁₂ – A Ternary Indide with Condensed Distorted RhIn₈ Cubes. R.-D. Hoffmann, H. Huppertz, R. Pöttgen, Solid State Sciences 4 (2002) 103-107.

Structure and Magnetism of REPtMg (RE = Pr, Nd, Sm). R. Kraft, G. Kotzyba, R.-D. Hoffmann, R. Pöttgen., Z. Naturforsch. 57b (2002) 488-494.

Ferromagnetic Ordering in GdPdCd. R.-D. Hoffmann, R. Pöttgen, Th. Fickenscher, C. Felser, K. tka, R. Kmiec, Solid State Sciences 4 (2002) 609-617.

Syntheses and Crystal Structures of LaRhMg, CeRhMg, PrRhMg, and NdRhMg. Th. Fickenscher, R.-D. Hoffmann, R. Kraft, R. Pöttgen, Z. Anorg. Allg. Chem. 628 (2002) 667-672.

The Stannides LiAuSn and LiAu₃Sn₄. R.-D. Hoffmann, D. Johrendt, Zh. Wu, R. Pöttgen, J. Mater. Chem. 12 (2002) 676-680.

Crystal Structures and Properties of Eu₂GeSe₄ and Eu₂Ge₂Se₅. M. Tampier, D. Johrendt, R. Pöttgen, G. Kotzyba, C. Rosenhahn, B. D. Mosel, Z. Naturforsch. 57b (2002) 133-140.

The Zintl Phase Eu₂Si. R. Mishra, R.-D. Hoffmann, R. Pöttgen, H. Trill, B. D. Mosel, Z. Anorg. Allg. Chem. 628 (2002) 741-744.

Synthesis and Structure of the Intermetallic Lithium Stannides LiTSn₄ (T = Ru, Rh, Ir) with Ordered PdGa₅ Type Structure. Zh. Wu, R.-D. Hoffmann, R. Pöttgen, Z. Anorg. Allg. Chem. 628 (2002) 1484-1488.

X-Ray Single Crystal Studies of ZrRhGa, HfRhGa, and ZrRh_0.710(4)In. M. F. Zumdick, R. Pöttgen, V. I. Zaremba, R.-D. Hoffmann, J. Solid State Chem. 166 (2002) 305-310.

Magnetism and ¹⁵¹Eu Mössbauer Spectra of a- and b-Eu₂GeS₄. M. Tampier, D. Johrendt, R. Pöttgen, G. Kotzyba, H. Trill, B. D. Mosel, Z. Anorg. Allg. Chem. 628 (2002) 1243-1245.

Palladium-Cadmium Ordering in REPdCd (RE = La, Ce, Pr, Nd, Sm, Eu, Gd, Tb) and Comparison with Isotypic Indium Compounds. Th. Fickenscher, R.-D. Hoffmann, R. Mishra, R. Pöttgen, Z. Naturforsch. 57b (2002) 275-279.

New Compounds with the ThCr₂Si₂ Type Structure and the Electronic Structure of CaM ₂Ge₂ (M = Mn–Zn). Ch. Kranenberg, D. Johrendt, A. Mewis, R. Pöttgen, G. Kotzyba, H. Trill, B. D. Mosel, J. Solid State Chem. 167 (2002) 107–112.

Synthesis, Crystal Structure, Magnetism, and Optical Properties of Gd₃[SiON₃]O – An Oxonitridosilicate Oxide with Non-Condensed SiON₃ Tetrahedra and Complex [OGd₆]¹⁶⁺ Cations. H. A. Höppe, G. Kotzyba, R. Pöttgen, W. Schnick, J. Solid State Chem. 167 (2002) 393–401.

Synthesis, Structure, and Magnetic Properties of LaTMg and CeTMg (T = Pd, Pt, Au). B. J. Gibson, A. Das, R. K. Kremer, R.-D. Hoffmann, R. Pöttgen, J. Phys. C 14 (2002) 5173-5186.

Ternary Indides LnRhIn₂ (Ln = La, Ce, Pr, Nd, Sm) with MgCuAl₂ Type Structure. V. I. Zaremba, V. P. Dubenskiy, R. Pöttgen, Z. Naturforsch. 57b (2002) 798-802.

Gd₃Pt₄In₁₂ and Tb₃Pt₄In₁₂ – New Ternary Indides with Condensed Distorted [PtIn₆] Trigonal Prisms. U. Ch. Rodewald, V. I. Zaremba, Ya. V. Galadzhun, R.-D. Hoffmann, R. Pöttgen, Z. Anorg. Allg. Chem. 628 (2002) 2293–2298.

Intermetallic Lithium Compounds with Two- and Three-Dimensional Polyanions – Synthesis, Structure and Lithium Mobility. R. Pöttgen, Zh. Wu, R.-D. Hoffmann, G. Kotzyba, H. Trill, J. Senker, D. Johrendt, B. D. Mosel, H. Eckert, Heteroatom Chem. 13 (2002) 506–513.

The Ternary Stannides MgRuSn₄ and Mg_xRh₃Sn_7–x (x = 0.98–1.55). M. Schlüter, A. Kunst, R. Pöttgen, Z. Anorg. Allg. Chem. 628 (2002) 2641-2646.

Structure and Properties of GdTMg (T = Pd, Ag, Pt). K. tka, R. Kmiec, A. W. Pacyna, T. Tomkowicz, R. Mishra, T. Fickenscher, H. Piotrowski, R.-D. Hoffmann, R. Pöttgen, J. Solid State Chem. 168 (2002) 331-342.

Synthesis, Structure, and Magnetic Properties of CeNiIn₂. V. I. Zaremba, Ya. M. Kalychak, Yu. B. Tyvanchuk, R.-D. Hoffmann, M. H. Möller, R. Pöttgen, Z. Naturforsch. 57b (2002) 791-797.

Decomposition of EuPdIn and EuPtIn at High-Temperature and High Pressure – Formation of the Hexagonal Laves Phases EuPd_0.72In_1.28 and EuPt_0.56In_1.44. H. Huppertz, G. Kotzyba, R.-D. Hoffmann, R. Pöttgen, J. Solid State Chem. 169 (2002) 155-159.

Complex Three-Dimensional Platinum–Indium Networks in the Ternary Indides Dy₂Pt₇In₁₆ and Tb₆Pt₁₂In₂₃. V. I. Zaremba, Ya. M. Kalychak, V. P. Dubenskiy, R.-D. Hoffmann, U. Ch. Rodewald, R. Pöttgen, J. Solid State Chem. 169 (2002) 118-124.

Synthesis and Crystal Structure of Zr₅Rh₂In₄ and Hf₅Rh₂In₄ – New Ternary Indides with Lu₅Ni₂In₄ Type Structure. M. Lukachuk, R. Pöttgen, Z. Naturforsch. 57b (2002) 1353-1358.

Synthesis and Structure of Yb₂Pd₆In₁₃. V. I. Zaremba, V. P. Dubenskiy, Ya. M. Kalychak, R.-D. Hoffmann, R. Pöttgen, Solid State Sciences 4 (2002) 1293-1298.

Ternary Antimonides YbTSb (T = Ni, Pd, Pt, Cu, Ag, Au) – Synthesis, Structure, Homogeneity Ranges, and ¹²¹Sb Mössbauer Spectroscopy. R. Mishra, R. Pöttgen, R.-D. Hoffmann, Th. Fickenscher, M. Eschen, H. Trill, B. D. Mosel, Z. Naturforsch. 57b (2002) 1215-1223.

Über neue Pnictide im CaAl₂Si₂-Typ und dessen Existenzgebiet. F. Wartenberg, Chr. Kranenberg, R. Pocha, D. Johrendt, A. Mewis, R.-D. Hoffmann, B. D. Mosel, R. Pöttgen, Z. Naturforsch. 57b (2002) 1270-1276.