Beryllium dihalides

Electron diffraction patterns for Beig vapor (, 4) have been interpreted in terms of a linear configuration, with the latter study reporting the Be-1 bond distance as 2.12 A. Other studies also suggest a linear molecule. For example, the electric deflection of mass spectrometrlcaly detected molecular beams (5) showed that all the beryllium dihalides are linear. Snelson (6) observed the infrared spectra of Bel in the spectral range 4000-200 cm using a matrix isolation technique. 

Beryllium complexes, 3 amines, 7 anionic, 10 hydrates, 6 phthalocyanine, 59 poly carboxylic acid, 33 Schiff bases, 28 Beryllium dichloride ether complexes, 8 Beryllium difluoride ammine complexes, 7 Beryllium dihalides sulfide complexes, 10 Beryllium halides amine complexes, 8 ammonia complexes, 7 carbonyl complexes, 9 Beryllium nitrate basic, 32... 

Troyanov SI (2(XX)) Crystal modifications of beryllium dihalides BeCl2, BeBr2, and Beh-Russ J Inoig Chem 45 1481-1486... 

The standard reduction potential for Be2+ is the least negative of the elements in the group and by the same token beryllium is the least electropositive and has the greatest tendency to form covalent bonds. The bulk metal is relatively inert at room temperature and is not attacked by air or water at high temperatures. Beryllium powder is somewhat more reactive. The metal is passivated by cold concentrated nitric acid but dissolves in both dilute acid and alkaline solutions with the evolution of dihydrogen. The metal reacts with halogens at 600°C to form the corresponding dihalides. 

Halides, 7 1-26 actinide elements, 2 195-233 anion dependence, 39 139 berkelium, 28 48, 51-53 beryllium, 14 255-332 binary, 35 237-246, 274-280 decomposition, 35 277 dichalcogen dihalides, 35 279-280 equilibrium studies, 35 242 mixed-ligand halides, 35 244-246 reactions, 35 246 selenium halides, 35 240-241... 

The first ionisation potentials decrease considerably from beryllium to calcium. Despite the second ionisation potentials often being large, the fev compounds with unipositive ions such as CaCl, CaF and Cal (Wohler and Rodewald, 1904) revert easily to dihalides. 

Beryllium halides and pseudohalides have been reviewed. Non-empirical LCAO MO SCF calculations are reported for the ground, C2 states of the Group II dihalides BeF2, MgF2, and CaF2. The calculations demonstrate the importance of id orbitals in the bonding of the dihalides and hence in the... 

Heated americium metal reacts with halogens, H2, O2, N2, carbon, boron, antimony, etc., forms dihalides with HgBr2 and Hgl2, and forms alloys with a number of metals (e.g. beryllium and platinum) (see Table 8.3). Americium dissolves readily in aqueous hydrochloric acid but is insoluble in liquid ammonia. 

The reaction of metals or metal oxides with hydrogen halides is one of the best-known ways of making metal halides. Beryllium in Group II forms dihalides, so the reactions are ... 

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