Combination lining for the backwall of an open-hearth furnace

Complexation and disproportionation of group 4 metal (alkoxy) halides with phosphine oxides

“…27,28 Using tetramethylethylenediamine as bidentate Lewis base, cis-ZrCl 4 L 2 was obtained and again, the Zr-Cl bond distances are longer for the two trans chloride ligands (2.43 Å) and shorter for the chloride ligands trans to the Lewis base (2.41 Å). 29 Acetonitrile (ACN) is a less steric ligand than THF and only cis configurations were determined for TiCl 4 (ACN) 2 , 30,31 TiBr 4 (ACN) 2 , 32 ZrCl 4 (ACN) 2 , 33,34 and ZrBr 4 (ACN) 2 . 35,36 On the other hand, tri-n-octylphosphine oxide is more sterically bulky than THF and favors the trans configuration for ZrCl 4 (R 3 PO) 2 .…”