Structure and Bonding
This Group 4 halide contains hafnium in the +4 oxidation state. Solid HfCl4 is a polymer, each of the Hf centers are bridged by chloride ligands as found for ZrCl4. In the gas phase, both ZrCl4 and HfCl4 are expected to adopt the monomeric tetrahedral structure seen for TiCl4. Electronographic investigations of HfCl4 in gas phase showed that the Hf-Cl internuclear distance is 2.33 Å and the Cl…Cl internuclear distance is 3.80 Å. The ratio of intenuclear distances r(Me-Cl)/r(Cl…Cl) is 1.630 and this value agrees well with the value for the regular tetrahedron model (1.633).
Read more about this topic: Hafnium(IV) Chloride
Famous quotes containing the words structure and, structure and/or bonding:
“Science is intimately integrated with the whole social structure and cultural tradition. They mutually support one other—only in certain types of society can science flourish, and conversely without a continuous and healthy development and application of science such a society cannot function properly.”
—Talcott Parsons (1902–1979)
“Science is intimately integrated with the whole social structure and cultural tradition. They mutually support one other—only in certain types of society can science flourish, and conversely without a continuous and healthy development and application of science such a society cannot function properly.”
—Talcott Parsons (1902–1979)
“Attachment to a baby is a long-term process, not a single, magical moment. The opportunity for bonding at birth may be compared to falling in love—staying in love takes longer and demands more work.”
—T. Berry Brazelton (20th century)