Direct photolytic route to trans-Cr(CO)4(AsPh3)2 and crystal structures of cis-Mo(CO)4(AsPh3)2 and cis-W(CO)4(AsPh3)2
β Scribed by Christina L Bergstrom; Rudy L Luck
- Book ID
- 104138514
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 139 KB
- Volume
- 318
- Category
- Article
- ISSN
- 0020-1693
No coin nor oath required. For personal study only.
β¦ Synopsis
The preparation of trans-Cr(CO) 4 (AsPh 3 ) 2 is accomplished in reasonable yield by the direct photolysis of a solution of Cr(CO) 6 and an excess of AsPh 3 in heptane. The structures of cis-Mo(CO) 4 (AsPh 3 ) 2 and cis-W(CO) 4 (AsPh 3 ) 2 are reported. These are found to be isostructural and consist of distorted octahedral geometries with As M As angles of 102.56(2) and 102.62(2)Β°for M =Mo and W, respectively. The Mo As distances of 2.6428(9) and 2.6489(9) A , are significantly longer than those in the W analogue at 2.6384(6) and 2.6361(6) A , . On the basis of a comparison to literature data, the AsPh 3 ligands in these molecules can be described as extremely compressed.
π SIMILAR VOLUMES