Reactions of low-valent metal complexes with fluorocarbons. Part XXI. Five-membered ring complexes from phosphine, arsine, and phosphite palladium (0) compounds

1972 ◽  
pp. 96 ◽  
Author(s):  
H. D. Empsall ◽  
M. Green ◽  
F. G. A. Stone
Keyword(s):  
Metal Complexes ◽  
Membered Ring ◽  
Ring Complexes ◽  
Low Valent

scholarly journals Low-valent dialkoxytitanium(ii): a useful tool for the synthesis of functionalized seven-membered ring compounds

2021 ◽  
Vol 57 (29) ◽  
pp. 3603-3606
Author(s):  
Florent Bodinier ◽  
Youssouf Sanogo ◽  
Janick Ardisson ◽  
Marie-Isabelle Lannou ◽  
Geoffroy Sorin
Keyword(s):  
Grignard Reagent ◽  
Membered Ring ◽  
Ring Compounds ◽  
Low Valent

Herein, we describe unprecedented access to all-carbon or heterocyclic seven-membered ring frameworks from 1,8-ene-ynes promoted by inexpensive low-valent titanium(ii) species, readily available from a combination of Ti(OiPr)4 and Grignard reagent.

Main-group metal complexes of α-diimine ligands: structure, bonding and reactivity

2021 ◽  
Author(s):  
Rong Zhang ◽  
Yanchao Wang ◽  
Yanxia Zhao ◽  
Carl Redshaw ◽  
Igor L. Fedushkin ◽  
...  
Keyword(s):  
Metal Complexes ◽  
Small Molecule ◽  
Main Group ◽  
Group Metal ◽  
Diimine Ligands ◽  
Main Group Metal ◽  
Metal Metal ◽  
Low Valent

The use of dad (and bian) ligands in the stabilization of main-group complexes, in particular metal–metal-bonded compounds, as well as the small molecule reactivity of these (low-valent) metal complexes, is summarized.

Structural diversity in multinuclear tantalum polyhydrides formed via reductive hydrogenolysis of metal–carbon bonds

2019 ◽  
Vol 55 (88) ◽  
pp. 13263-13266 ◽  
Author(s):  
Jade I. Fostvedt ◽  
Trevor D. Lohrey ◽  
Robert G. Bergman ◽  
John Arnold
Keyword(s):  
Metal Complexes ◽  
Structural Diversity ◽  
Carbon Bonds ◽  
Low Valent

Put the methyl to the metal: hydrogenolysis of metal–carbon bonds offers controlled access to low-valent early metal complexes.

scholarly journals Carbonylniobium Chemistry, IV Derivatives of η5 -C5H5Nb(CO)4 with Tridentate Phosphines

1983 ◽  
Vol 38 (4) ◽  
pp. 446-448 ◽  
Author(s):  
Martin Hoch ◽  
Dieter Rehder
Keyword(s):  
Nmr Spectra ◽  
Membered Ring ◽  
Vanadium Complexes ◽  
Ring Complexes ◽  
Derivatives Of ◽  
Induced Reaction

Abstract The photo-induced reaction between CpNb(CO)4 and Ph2P(CH2)2PR(CH2)2PPh2 (L; R = Ph, Cy) yields the chelated five-membered ring complexes cis-[CpNb(CO)2L] (two isomers in the case of R = Cy). The uncordinated PPh2 group reacts with CpNb(CO)3THF to form CpNb(CO)2(μ-L)CpNb(CO)3. IR, 31P and 93Nb NMR spectra are discussed and compared with corresponding data of the analogous vanadium 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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