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This thesis presents research which has resulted in the synthesis, structural and spectroscopic characterization of the first high-valent iron nitride complexes. It also details the reactivity of a unique iron (V) nitride complex with water, yielding ammonia.

Carola Vogel's PhD thesis focuses on the synthesis, and structural and spectroscopic characterization of the first high valent iron nitride complexes. In her interdisciplinary and collaborative research Carola also describes the reactivity studies of a unique iron (V) nitride complex with water. These studies show that quantitative yields of ammonia are given at ambient conditions. High valent iron nitride and oxo species have been proposed as key intermediates in many bio-catalytic transformations, but until now these species have proven exceedingly challenging to isolate and study. Iron...

During the Old and Middle Kingdoms, Ancient Egypt led the world in the construction of fortifications. The oldest was discovered on Elephantine Island and dates to c.2900 BC. This book investigates over 2,000 years of Egyptian fortification, including both fortified cities and military installations. It covers the most famous sites, including the fortified town of Ayn Asil and the fortress of Buhen. The text also examines the specific defensive structures within the fortifications, including gates, walls, and towers, and looks at both the operation and social history of these ancient military...

Wann sind wir da? Was machen wir heute? Mir ist so langweilig! Hört man das öfter, dann muss schnell mal eine Idee her. Bei den 50er Kartensets gehen die Ideen niemals aus. Auf 50 Karten werden zu den verschiedensten Themen Tipps, Tricks, Spiele und Quizfragen gegen Langeweile gesammelt. Egal ob in den Ferien, bei Krankheit, auf der Reise oder in der Schule, nahezu überall können die 50er Kartensets dank handlicher Schachtel mithingenommen werden. So kommt garantiert keine Langeweile mehr auf!50 Spiele und Rätsel lassen die Zeit im Auto, Zug oder Flugzeug ruckzuck vergehen. Auf den...