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Beryllium(II) forms many complexes with bidentate ligands containing oxygen-donor atoms. [47] The species [Be 3 O(H 2 PO 4) 6] 2-is notable for having a 3-coordinate oxide ion at its center. Basic beryllium acetate, Be 4 O(OAc) 6, has an oxide ion surrounded by a tetrahedron of beryllium atoms.
Tetrafluoroberyllate or orthofluoroberyllate is an anion with the chemical formula [Be F 4] 2−.It contains beryllium and fluorine.This fluoroanion has a tetrahedral shape, with the four fluorine atoms surrounding a central beryllium atom.
Beryllium is unique as being the only monoisotopic element with both an even number of protons and an odd number of neutrons. There are 25 other monoisotopic elements but all have odd atomic numbers, and even numbers of neutrons. Of the 10 radioisotopes of beryllium, the most stable are 10 Be with a half-life of 1.387(12) million years [nb 1 ...
Beryllium fluoride has distinctive optical properties. In the form of fluoroberyllate glass, it has the lowest refractive index for a solid at room temperature of 1.275. Its dispersive power is the lowest for a solid at 0.0093, and the nonlinear coefficient is also the lowest at 2 × 10 −14.
Beryllium nitride, Be 3 N 2, is a nitride of beryllium. It can be prepared from the elements at high temperature (1100–1500 °C); [2] unlike beryllium azide or BeN 6, it decomposes in vacuum into beryllium and nitrogen. [2] It is readily hydrolysed forming beryllium hydroxide and ammonia. [2]
Beryllium forms a variety of complexes with N-hetereocyclic carbenes (NHCs). [16] [17] [18] Beryllium complexes of cyclic alkyl amino carbene (CAAC) ligands have the formula (CAAC)BeR 2). A CAAC ligand coordinates a 2 electron -1 charge into the beryllium center. [19] CAAC has an "amino" substituent and an "alkyl" sp 3 carbon atom. CAACs are ...
Beryllium hydroxide, Be(OH) 2, is an amphoteric hydroxide, dissolving in both acids and alkalis. Industrially, it is produced as a by-product in the extraction of beryllium metal from the ores beryl and bertrandite. [7] The natural pure beryllium hydroxide is rare (in form of the mineral behoite, orthorhombic) or very rare (clinobehoite ...
The reaction with lithium hydride (in which the hydride ion is the Lewis base), forms sequentially LiBeH 3 and Li 2 BeH 4. [3] The latter contains the tetrahydridoberyllate(2-) anion BeH 2− 4. Beryllium hydride reacts with trimethylamine, N(CH 3) 3 to form a dimeric adduct with bridging hydrides. [11]