TY - GEN A1 - Schöneich, Michael A1 - Hohmann, Andrea A1 - Schmidt, Peer A1 - Pielnhofer, Florian A1 - Bachhuber, Frederik A1 - Weihrich, Richard A1 - Osters, Oliver A1 - Köpf, Marianne A1 - Nilges, Tom T1 - Element allotropes and polyanion compounds of pnicogenes and chalcogenes: stability, mechanisms of formation, controlled synthesis and characterization T2 - Zeitschrift für Kristallographie - Crystalline Materials N2 - The application of the EnPhaSyn (theoretical Energy diagrams, experimental Phase formation, Synthesis and characterisation) concept is reviewed with respect to prediction of structures and stability of element allotropes and compound polymorphs, their phase formation and transition processes, and their directed synthesis, respectively. Therein, the relative energetical stability (En) of target compounds and possible decomposition are determined from quantum chemical DFT calculations. Phase formation and transition (Pha) is probed by a gas balance method, developed as high temperature gas balance concept. It helped to study the synthesis and stability range of several compounds experimentally. Applications of the concept and synthesis principles (Syn) of non-equilibrium phases are presented for allotropes of P, As, P1-xAsx, as well as binary and ternary compounds including the Zintl and Laves like phases IrPTe, NiP2, CoSbS, NiBiSe, Li0.2CdP2, Cu3CdCuP10, and Cd4Cu7As. KW - Arsenic KW - Phosporus KW - DFT KW - energy diagram KW - polymorph structure Y1 - 2017 UR - https://www.degruyter.com/view/j/zkri.ahead-of-print/zkri-2016-1966/zkri-2016-1966.xml U6 - https://doi.org/10.1515/zkri-2016-1966 SN - 2194-4946 VL - 232 IS - 1-3 SP - 91 EP - 105 ER - TY - GEN A1 - Zeugner, Alexander A1 - Kaiser, Martin A1 - Schmidt, Peer A1 - Menshchikova, Tatiana V. A1 - Rusinov, Igor P. A1 - Markelov, Anton V. A1 - Van den Broek, Wouter A1 - Chulkov, Evgueni V. A1 - Doert, Thomas A1 - Ruck, Michael A1 - Isaeva, Anna T1 - Modular Design with 2D Topological-Insulator Building Blocks: Optimized Synthesis and Crystal Growth and Crystal and Electronic Structures of BiₓTeI (x = 2, 3) T2 - Chemistry of Materials N2 - Structural engineering of topological bulk materials is systematically explored with regard to the incorporation of the buckled bismuth layer [Bi₂], which is a 2D topological insulator per se, into the layered BiTeI host structure. The previously known bismuth telluride iodides, BiTeI and Bi₂TeI, offer physical properties relevant for spintronics. Herewith a new cousin, Bi₃TeI (sp.gr. R3m, a = 440.12(2) pm, c = 3223.1(2) pm), joins the ranks and expands this structural family. Bi₃TeI = [Bi₂][BiTeI] represents a stack with strictly alternating building blocks. Conditions for reproducible synthesis and crystal-growth of Bi₂TeI and Bi₃TeI are ascertained, thus yielding platelet-like crystals on the millimeter size scale and enabling direct measurements. The crystal structures of Bi₂TeI and Bi₃TeI are examined by X-ray diffraction and electron microscopy. DFT calculations predict metallic properties of Bi₃TeI and an unconventional surface state residing on various surface terminations. This state emerges as a result of complex hybridization of atomic states due to their strong intermixing. Our study does not support the existence of new stacking variants BiₓTeI with x > 3; instead, it indicates a possible homogeneity range of Bi₃TeI. The series BiTeI–Bi₂TeI–Bi₃TeI illustrates the influence of structural modifications on topological properties. KW - Crytal growth KW - Topological insulator KW - Crystal structure KW - Electronic structure KW - Bismuth layered compounds Y1 - 2017 UR - http://pubs.acs.org/doi/abs/10.1021/acs.chemmater.6b05038 U6 - https://doi.org/10.1021/acs.chemmater.6b05038 SN - 0897-4756 SN - 1520-5002 VL - 29 IS - 3 SP - 1321 EP - 1337 ER - TY - RPRT A1 - Schmidt, Peer A1 - Efimova, Anastasia T1 - Thermal Characterization of Ionic Liquids N2 - Ionic liquids (ILs) are currently of high interest due to their high performance physicochemical properties over a wide temperature range of existence of the liquid state. Among the ionic liquids investigated, 1-alkyl-3-methylimidazolium halides were found generally preferred for their low melting points and ease of handling and preparation. KW - Thermal analysis KW - Ionic liquid Y1 - 2015 UR - https://www.netzsch-thermal-analysis.com/en/service-support/customer-magazine-onset/ SP - 14 EP - 17 PB - NETZSCH-Gerätebau GmbH CY - Selb ER - TY - GEN A1 - Wels, Martin A1 - Schmidt, Peer T1 - Crystal growth of ternary phases with homogeneity range: Modeling and experiments T2 - Zeitschrift für Anorganische und Allgemeine Chemie N2 - Synthesizing crystals of ternary solid solutions M2Q3 (M=Bi, Q=Se, Te) with definite composition requires advanced knowledge on the phase relations in the system. By chemical vapor transport [1] the request of homogeneous crystallization can be fulfilled. The experimental scope gets supported by modeling. A phase diagram of the pseudobinary system generated with FactSage [2] (Fig. 1) provides the thermodynamic parameters of the miscibility gap respectively the solid solution. Additionally, these parameters are used to optimize the processes while chemical vapor transport with iodine [3]. The optimum transport conditions of ϑsource = 500 °C and ϑsink = 450 °C has been applied as for the synthesis of the binary compounds [4]. Both by modeling and experiments the congruent transport can be demonstrated, Fig. 2. KW - Crystal growth KW - Chemical vapor transport KW - Chalogenides KW - Solid solution KW - Phase diagram Y1 - 2016 UR - http://onlinelibrary.wiley.com/doi/10.1002/zaac.201690018/full U6 - https://doi.org/10.1002/zaac.201690018 SN - 1521-3749 VL - 642 IS - 18 SP - 1066 ER - TY - BOOK A1 - Schmidt, Peer T1 - Allgemeine Chemie, Teil 1: Atombau und Periodensystem N2 - Aufbau der Atome und die Ordnung der chemischen Elemente im Periodensystem KW - Allgemeine Chemie KW - Atombau KW - Periodensystem der Elemente Y1 - 2015 SN - 978-3-662-47347-4 PB - Springer Spektrum CY - Heidelberg [u.a.] ER - TY - BOOK A1 - Schmidt, Peer A1 - Binnewies, Michael A1 - Finze, Maik T1 - Anorganische Chemie, Band 2: Gruppe 2, Gruppe 13 N2 - Elemente der Gruppe 2 (Erdalkalimetalle); Elemente der Gruppe 13 KW - Anorganische Chemie KW - Periodensystem der Elemente KW - Erdalkalimetalle KW - Gruppe 13 Y1 - 2016 SN - 978-3-662-47549-2 PB - Springer CY - Heidelberg ET - 1. Auflage ER - TY - BOOK A1 - Schmidt, Peer A1 - Binnewies, Michael A1 - Finze, Maik T1 - Anorganische Chemie, Band 3: Gruppe 14, Ressourceneffizienz N2 - Elemente der Gruppe 14 (Tetrele); Strategien der Ressourceneffizienz KW - Anorganische Chemie KW - Periodensystem der Elemente KW - Tetrele KW - Gruppe 14 KW - Ressourceneffizienz Y1 - 2016 SN - 978-3-662-47561-4 PB - Springer CY - Heidelberg ET - 1. Auflage ER - TY - BOOK A1 - Schmidt, Peer A1 - Binnewies, Michael A1 - Finze, Maik T1 - Anorganische Chemie, Band 4: Gruppen 15 und 16 N2 - Gruppe 15 (Pnikogene); Gruppe 16 (Chalkogene) KW - Anorganische Chemie KW - Periodensystem der Elemente KW - Gruppe 15 KW - Pnikogene KW - Gruppe 16 KW - Chalkogene Y1 - 2016 SN - 978-3-662-47565-2 PB - Springer CY - Heidelberg ET - 1. Auflage ER - TY - BOOK A1 - Schmidt, Peer A1 - Binnewies, Michael A1 - Finze, Maik T1 - Anorganische Chemie, Band 5: Gruppen 17 und 18 N2 - Gruppe 17 (Halogene); Gruppe 18 (Edelgase) KW - Anorganische Chemie KW - Periodensystem der Elemente KW - Gruppe 17 KW - Halogene KW - Gruppe 18 KW - Edelgase Y1 - 2016 SN - 978-3-662-47547-8 PB - Springer CY - Heidelberg ET - 1. Auflage ER - TY - BOOK A1 - Binnewies, Michael A1 - Finze, Maik A1 - Jäckel, Manfred A1 - Schmidt, Peer A1 - Willner, Helge A1 - Rayner-Canham, Geoff T1 - Allgemeine und Anorganische Chemie N2 - Der Lehrstoff der Allgemeinen und Anorganischen Chemie für die ersten zwei Semester des Chemiestudiums. Ausgewogene Stoffdarstellung mit vielen Einblicken in hochaktuelle Themen und Anwendungen. Mit zahlreichen neuen Inhalten und Aktualisierungen, etwa zu großtechnischen Verfahren, zur zunehmenden Bedeutung seltener Elemente wie Gallium und Indium für Hightech-Produkte, zu Rohstoffen für Zukunftstechnologien, zum Schweißen und Löten, zu Magnetwerkstoffen und Wärmespeichern. Die Nomenklatur ist an die aktuellen IUPAC-Regeln angepasst. KW - Allgemeine Chemie KW - Anorganische Chemie KW - Atombau KW - Chemische Bindung KW - Hauptgruppenelemente KW - Nebengruppenelemente KW - Lanthanoide KW - Actinoide Y1 - 2016 UR - http://www.springer.com/de/book/9783662450666 SN - 978-3-662-45066-6 SN - 978-3-662-45067-3 PB - Springer CY - Heidelberg ET - 3., vollständig überarbeitetet Auflage ER -