Hafnium acetylacetonate

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Hafnium acetylacetonate[1]
Hf(acac)4.png
Names
IUPAC name
hafnium(4+); (Z)-4-oxopent-2-en-2-olate
Other names
Hafnium acetylacetonate
Identifiers
17475-67-1
Jmol-3D images Image
PubChem 21953595
Properties
C20H28HfO8
Molar mass 574.93
Appearance White to off-white powder
Density 1.42 g/cm3
Melting point 193 °C (379 °F; 466 K)
Boiling point 82 °C (180 °F; 355 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Hafnium acetylacetonate, also known as Hf(acac)4, is a coordination compound with formula Hf(C5H7O2)4. This white solid is the main hafnium complex of acetylacetonate. The molecule has D2 symmetry. It is prepared from hafnium tetrachloride and acetylacetone, and base. Zr(acac)4 is very similar in structure and properties.[2]

Uses[edit]

Along with titanium tetrabutoxide (TBT), hafnium acetylacetonate serves as a catalyst for the production of poly(butylene terephthalate).[3]

References[edit]

  1. ^ "Hafnium Acetylacetonate". American Elements. Retrieved 2015-04-05. 
  2. ^ Zherikova, K. V.; Morozova, N. B.; Kuratieva, N. V.; Baidina, I. A.; Igumenov, I. K. (November 2005). "Synthesis and structural investigation of hafnium(IV) complexes with acetylacetone and trifluoroacetylacetone". Journal of Structural Chemistry 46 (6): 1039–1046. doi:10.1007/s10947-006-0239-2. 
  3. ^ Banach, T.E; Berti, C; Colonna, M; Fiorini, M; Marianucci, E; Messori, M; Pilati, F; Toselli, M (August 2001). "New catalysts for poly(butylene terephthalate) synthesis". Polymer 42 (18): 7511–7516. doi:10.1016/S0032-3861(01)00219-1.