Abstract Alkalimetalldihydrogenantimonide [M(L) x SbH 2 ], kurz: Alkalimetallantimonide (M=Li, Na, K, Rb, Cs; 1 : L=pmdta; L=Kronenether), wurden aus Stiban und n ‐Butyllithium, M(hmds) (hmds=Hexamethyldisilazan) bzw. MO t Bu hergestellt. Wir haben einen allgemein anwendbaren Syntheseweg für diese Verbindungen entwickelt die erhaltenen auf ihre Stabilität in Abhängigkeit vom verwendeten Alkalim...

The structures of 1-trimethylsilyl-1,2,3-benzotriazole and 2-trimethylsilyl-1,3-thiazole have been determined by gas electron diffraction and computational methods. While 1-trimethylsilyl-1,2,3-benzotriazole shows a significant asymmetry in the way the SiMe(3) groups bonds to the ring system, the same is not true for 2-trimethylsilyl-1,3-thiazole. However, it has been shown that when the positi...

The monomeric title zirconium(IV) compound, [Zr(C(12)H(21)N(2)Si)(2)Cl(2)], was prepared by the metathetical reaction of [LiN(SiMe(2)NMe(2))(2,6-Me(2)C(6)H(3))](2) with zirconium tetra-chloride. The Zr(IV) atom is N,N'-chelated by the N-silylated anilido ligand. Along with two Cl atoms, the six-coordinated Zr(IV) atom demonstrates a highly distorted octa-hedral geometry. The two ligands around ...

Abstract Reactions of the potassium alumanyl derivative, [K{Al(SiN Dipp )}] 2 (SiN ={CH SiMe NDipp} ), with white phosphorus result in two electron reduction to provide controlled access species containing (P 4 ) 2− dianion. Two examples have been crystallographically characterized, a monomeric derivative which cation is encapsulated by 18‐crown‐6 (18‐cr‐6) and 1‐dimensional polymeric isolated ...

Only a few land-animal fats have been studied in detail so far with respect to their fatty acid composition and the pattern of glyceride molecules. Among those whose fatty acid compositions are available are lion and cat (Hilditch, Sime & Maddison, 1942; Gunstone & Russell, 1954), puma (Giral, 1945), tiger (Pathak & Agarwal, 1952; Gunstone, 1955), sacred baboon, Ceylon sloth bear (Hilditch et a...

Biaryls (two directly connected aromatic rings, Ar(1)-Ar(2)) are common motifs in pharmaceuticals, agrochemicals, and organic materials. Current methods for establishing the Ar(1)-Ar(2) bond are dominated by the cross-coupling of aryl halides (Ar(1)-X) with aryl metallics (Ar(2)-M). We report that, in the presence of 1 to 2 mole percent of a gold catalyst and a mild oxidant, a wide range of are...

The nonagenarian population will be the fastest growing amongst the older over the next 30 years. Intuitively, the geriatric clinician notes that it is, both physically and cognitively, a “stronger” population (1). Chronological age can certainly not be considered as a strong marker because the heterogeneity of the phenotypes in the old person must be noted. Frailty is often linked to advanced ...

This paper describes the implementation of an online transient stability assessment software, composed of algorithms for contingency screening and for the design of preventive control actions. The implementation of the two parts rely on a hybrid method called SIME, coupled with a time domain simulation engine and power flow program. The speed up of the contingency screening module is obtained b...

Giral, F. (1945). J. chem. Soc. p. 112. Hilditch, T. P. (1956). The Chemical Constitution of Natural Fats, 3rd ed. London: Chapman and Hall. Hilditch, T. P. & Lea, C. H. (1927). J. chem. Soc. p. 3106. Hilditch, T. P. & Longenecker, H. E. (1937). Biochem. J. 31, 1805. Hilditch, T. P. & Meara, M. L. (1942). J. Soc. chem. Ind., Lond., 61, 117. Hilditch, T. P., Sime, I. C. & Maddison, L. (1942). Bi...