Beryllium chloride is an inorganic compound with the formula BeCl 2. It is a colourless, hygroscopic solid that dissolves well in many polar solvents. Its properties are similar to those of aluminium chloride, due to beryllium 's diagonal relationship with aluminium.

2020年8月30日 · It has only four electrons in valence shell and can accept two pairs of electrons from neighbouring chlorine atoms to complete their octet. In the vapour state, beryllium chloride exists as a dimer (Be2Cl4) which dissociates at 1200 K into monomer (BeCl2) which has a …

2020年7月23日 · In contrast to BeF 2, solid BeCl 2 is a 1-dimensional polymer consisting of edge-shared tetrahedral. In the gas phase, BeCl 2 exists as a dimer with two chlorine atoms bridging two Be atoms. In the dimer, the Be atoms are 3-coordinate. Bridging Cl atoms are two-coordinate, while terminal Cl atoms are one-coordinate.

Structure of BeCl 2 in solid-state. In vapour state, above 1200 K, it exists as a monomer having linear structure and zero dipole moment. But below 1200 K, it exists as dimer even in the vapour state.

2024年7月26日 · In the gas phase, BeCl 2 exists as a dimer with two chlorine atoms bridging two Be atoms. In the dimer, the Be atoms are 3-coordinate. Bridging Cl atoms are two-coordinate, while terminal Cl atoms are one-coordinate. At higher temperatures in the vapor phase, the linear monomer also exists. Prediction based on Lewis structures:

2023年5月16日 · In solid state BeCl 2 as polymer, in vapour state it form chloro-bridged dimer while above 1200K it is monomer.

2013年8月31日 · The dimer network formed in the solid state allows lone pairs from $\ce{Cl}$ to be donated to the $\ce{Be}$ in an attempt to fill the valence shell of beryllium. The use of a double bond to describe the nature of the $\ce{Be-Cl}$ bond is supported experimental data which shows that the bond length is shorter than expected for a single bond.

2019年11月23日 · BeCl 2 exists in the form of a polymer in solid state and as dimer in vapour phase. Why is BeCl2 polymeric? The polymeric structure of BeCl2 is due to its electron deficient nature. It has only four electrons in valence shell and can accept two pairs of electrons from neighbouring chlorine atoms to complete their octet.

Beryllium chloride, also known as BeCl 2, is an inorganic compound. It is a colorless, hygroscopic solid that dissolves readily in a wide range of polar solvents. Because of beryllium’s diagonal relationship with aluminum, its properties are similar to those of aluminium chloride.

BeCl2's electron deficiency accounts for its polymeric structure. In vapour phase, BeCl 2 tends to form a chloro bridged dimer. Below 1200K, beryllium chloride exists as a dimer; above 1200K, it exists as a monomer; this monomer is present in the vapor phase because the solid phase is where it polymerized.