Abstract
The triply-bonded ditungsten(III) species trans,trans-W2Cl4(NBun2)2(dppp) (1) and a new mixed-valent WIII/WIVcomplex (dppp)ClW(μ-Cl)3WCl2(NBun2) (3) have been isolated from the reaction of W2Cl4(NBun2)2(NHBun2)2with 1,3-bis(diphenylphosphino)propane (dppp). A complex similar to 3, (dppp)ClW(μ-Cl)3WCl2(NEt2) (2), has also been prepared. Both 2 and 3 are characterized by a W7+2core and they adopt face-sharing bioctahedral geometry with a chelating dppp ligand. The W - W distances in 2 and 3 are both 2.660(1) Å and each of them shows an EPR signal at g = 1.88. The structure of 1 contains a W6+2core with a W - W distance of 2.3055(8) Å. It has a bridging dppp ligand and a trans,trans stereochemistry.
Original language | English |
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Pages (from-to) | 3893-3898 |
Number of pages | 6 |
Journal | Polyhedron |
Volume | 16 |
Issue number | 22 |
DOIs | |
Publication status | Published - 15 Sept 1997 |
Externally published | Yes |
Keywords
- Bis(diphenilphosphino)propane complexes
- Chelating diphosphine ligand
- Crystal structure
- Face-sharing bioctahedral complexes
- Tungsten complexes
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry