Chemistry of polynuclear metal complexes with bridging carbene or carbyne ligands. Part 63. Synthesis of eight-membered-ring metallacycles: X-ray crystal structures of [Pt4W4(µ-CR)(µ3-CR)3(µ-CO)(CO)7(η-C5H5)4]·CH2Cl2, [Ni2Pt2W4(µ-CR)(µ3-CR)3(µ-CO)(CO)7(η-C5H5)4]·CH2Cl2(R = C6H4Me-4), and [Ni2Pt2W4(µ3-CPh)4(CO)8(η-C5H5)4]

1987 ◽  
pp. 2189-2200 ◽  
Author(s):  
Gregory P. Elliott ◽  
Judith A. K. Howard ◽  
Takaya Mise ◽  
Christine M. Nunn ◽  
F. Gordon A. Stone
Keyword(s):  
Metal Complexes ◽  
Crystal Structures ◽  
Membered Ring ◽  
X Ray ◽  
Polynuclear Metal Complexes

scholarly journals Synthesis, structure, and chemistry of selenium-containing four-membered rings

2005 ◽  
Vol 77 (12) ◽  
pp. 2029-2032 ◽  
Author(s):  
Eric Block ◽  
Evgeny V. Dikarev ◽  
Jin Jin ◽  
Bo Li ◽  
Marina A. Petrukhina ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Membered Ring ◽  
Selenium Compounds ◽  
X Ray ◽  
Rigid Rod ◽  
First Time

Recent chemistry of four-membered ring selenium compounds is reviewed followed by a summary of work in our laboratories in this area. 2-Thia-6-selenaspiro[3.3]heptane has been synthesized for the first time. X-ray structures for the latter compound as well as for 2,6-dithiaspiro[3.3]heptane and 2,6-diselenaspiro[3.3]heptane have been determined. These compounds are useful as "rigid-rod" ligands for coordination to transition-metal complexes.

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