Alkaline earth metal amides magnesium

The synthesis of heterobimetallic cages which contain alkaline-earth metals and tin(+2) atoms succeeds by the metalation of trialkylsilyl substituted phosphanes with the bis(trimethylsilyl)amides of tin(+2) and of calcium, strontium, or barium according to Scheme 3.6-13. Heterobimetallic cages of tin and magnesium are unknown, instead their formation mixtures of the homometallic phosphanides are observed [75],... 

The first alkaline earth metal inverse crowns were discovered in the late 1990s via the fortuitous reaction of traces of O2 with a mixture of an alkali metal and a magnesium amide to afford complexes of e formulae (see Scheme 3.9) M2Mg2 N(SiMe3)2 4(O2)x(O)... 

The coordination catalysts for these reactions are diverse. They can be compounds of alkaline earth metals, like calcium amide, or calcium amide-alkoxide. They can also be Ziegler-Natta-type catalysts. These can be alkoxides of aluminum, magnesium, or zinc combined with ferric chloride. Others are reaction products of dialkylzinc with water or alcohol. They can also be bimetallic //-oxoalkoxides, such as [(RO)2A102]Zn. Other catalysts are aluminum or zinc metalloporphyrin derivatives (see Fig. 4.1). 

ARCTON (75-46-7) Violent reaction with alkaline earth and alkali metals. Reacts violently with aluminum oxide at elevated temperatures, producing hydrogen chloride and phosgene vapors. Incompatible with beryllium, decaborane, diborane, difluoromethylene dihypofluorite, fluorine, lithium, magnesium, potassium, potassium acetylene-1,2-dioxide, potassium acetylene-1,2-dioxide, potassium sodium alloy, sodium amide, titanium, uranium hydride, zinc. Attacks aluminum, magnesium, zinc, and their alloys. 

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