Beryllium acetate

Beryllium acetate (basic) [Be40(0Ac)6] [1332-52-1] M 406.3, m 285-286°. Crystd from chloroform. 

Figure 5.4 The molecular structure of basic beryllium acetate showing (a) the regular tetrahedral arrangement of 4 Be about the central oxygen and the octahedral arrangement of the 6 bridging acetate groups, and (b) the detailed dimensions of one of the six non-planar 6-membeted heterocycles. (The Be atoms are 24 pm above and below the plane of the acetate group.) The 2 oxygen atoms in each acetate group are equivalent. The central Be-O distances (166.6 pm) are very close to that in BeO itself (165 pm).

Beryllium, bis(trifluoroacetylacetone)-gas chromatography, 1,560 Beryllium acetate basic, 2, 304 complexes, 3, 8 Beryllium borohydride ammine complexes, 3, 8 Beryllium carboxylates basic, 3, 31... 

THE STRUCTURE OF THE CARBOXYL GROUP. II. THE CRYSTAL STRUCTURE OF BASIC BERYLLIUM ACETATE... 

The zinc complex formed with V,V -diphenylformamidinate is structurally analogous to the basic zinc acetate structure, as [Zn4(/i4-0)L6], and the basic beryllium acetate structure. It is prepared by hydrolysis of zinc bis(diphenylformamidinate).184 Mixed metal zinc lithium species were assembled from dimethyl zinc, t-butyl lithium, V.iV -diphenylbenzamidine and molecular oxygen. The amidinate compounds formed are dependent on the solvent and conditions. Zn2Li2 and... 

Figure 8.26 The four-coordinated oxygen atom in basic beryllium acetate OBe4(CH3C02)6- Three of the acetate groups are shown as curved lines.

OZn4 tetrahedra Zn-Zn bridging R-dtp Structure analogous to that of basic beryllium acetate... 

Beryllium hydroxide is prepared by treating basic beryllium acetate, Be40(C2H302)e with caustic soda solution or by precipitation from a strongly alkaline solution of sodium beryllate. The precipitate is dried at 100°C. 

Beryllium acetate, basic see Beryllium and beryllium compounds) Beryllium-aluminium alloy see Beryllium and beryllium compounds) Beryllium carbonate see Beryllium and beryllium compounds) Beryllium chloride see Beryllium and beryllium compounds) Beryllium-copper alloy see Beryllium and beryllium compounds) Beryllium-copper-cobalt alloy see Beryllium and beryllium compounds) Beryllium fluoride see Beryllium and beryllium compounds)... 

Beryllium acetate has been found to give complexes of the type Be(OAc)2-2L with ammonia and primary amines, and beryllium borohydride forms 1 1 complexes with primary amines.101 IR studies on the complex Be(C104)2-2H20 show it to be in the form [Be(H20)4]2+[Be(C104)4]2 at elevated temperatures Be40(C104)6 is formed from the dihydrate.102... 

Basic beryllium acetate, [CAS 543-81-7], Be40(C2lL02)6, is the best known of the beryllium salts of organic adds which can be divided into normal beryllium carboxylates, Be(RCOOh. and beryllium oxide carhoxylates, Re40(RC.00). The basic aceiate is soluble in glacial acetic acid and can readily be crystallized therefrom in very pure form. It is also soluble in chloroform and other organic solvents. It has been used as a source of pure beryllium salts,... 

Beryllium acetate, basic, 3 4, 7, 9 basic, structure of, 3 8 Beryllium acetylacetonate, 2 17... 

Beryllium butyrate, basic, properties and structure of, 3 7, 8 Beryllium carbonate, basic, for use in preparation of basic beryllium acetate, 3 10 Beryllium chloride, anhydrous, 6 22 Beryllium o-chlorobenzoate, basic, properties of, 3 7 Beryllium complex compounds, basic, of organic acids, 3 4 basic, structure of, 3 6 nonelectrolytes, with acetylace-tone, Be(CsH702)2, 2 17 with benzoylacetone, Be(Cio-H 02)2, 2 19... 

As a worked example, the assignment of atoms and groups to equivalent positions for basic beryllium acetate is illustrated in detail in the following... 

Diethylzinc reacts with dimethyltriazene to afford the moisture-sensitive complex Zn(MeNNNMe)2 (17). However, a similar reaction involving diphenyltriazene gave a product which, after recrystallization from dry benzene, was found to be Zn40(PhNNNPh)g and to possess a basic beryllium acetate type of structure (48). 

Beryllium is unique among the metal ions so far studied in that it is extracted as a tetrameric carboxylate, whose structure was thought to be similar to the tetrameric beryllium acetate. In the latter, four beryllium atoms are bridged by one oxo and six acetates (148). 

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