The Crystal Structure of Pentacarbonyl(2,3-diphenylcyclopropenylidene)chromium(0)
β Scribed by Dr. G. Huttner; Dipl.-Chem. S. Schelle; Prof. O. S. Mills
- Publisher
- John Wiley and Sons
- Year
- 1969
- Tongue
- English
- Weight
- 121 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0044-8249
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π SIMILAR VOLUMES
The complex chemical behaviour of 2-phosphaindolizines 1 strong upfield signal (Ξ΄ 31 P = 6.1) was observed with a coordination shift of βΞ΄ = -161.7, which is typical for Ο-(1,3-azaphospholo[1,5-a]pyridines) towards metal carbonyl compounds was studied. (Ξ· 1 -2-Phosphaindolizine)M(CO) 5 coordination.
downfield. Thus on complex formation of (/), additional shielding and deshielding effects occur which can be explained in terms of a diamagnetic ring current in complex (2). We therefore propose the homoaromatic structure (2a) for the complex. Further support for this assignment comes from the fact
Crystals of the title compound were obtained by annealing a powder of Tl 2 Te 3 in a vertical temperature gradient (230 Β°CΒ±240 Β°C, 4 weeks). Tl 2 Te 3 crystallizes in space group C2/c with lattice parameters of a = 13.275(1) A Γ , b = 6.562(1) A Γ , c = 7.918(1) A Γ , and b = 107.14Β°(2). The telluri