ChemInform Abstract: Acylation of Pyridine Rings Mediated by Group 4 Metal Aryl Oxide Compounds: High Yield Formation of α,α′-Disubstituted-2,6-pyridinedimethoxide Ligands.

ChemInform ◽  
1990 ◽  
Vol 21 (51) ◽  
Author(s):  
C. H. ZAMBRANO ◽  
A. K. MCMULLEN ◽  
L. M. KOBRIGER ◽  
P. E. FANWICK ◽  
I. P. ROTHWELL
Keyword(s):  
High Yield ◽  
Group 4 ◽  
Yield Formation ◽  
Group 4 Metal

Acylation of pyridine rings mediated by Group 4 metal aryl oxide compounds: high yield formation of .alpha.,.alpha.'-disubstituted-2,6-pyridinedimethoxide ligands

1990 ◽  
Vol 112 (18) ◽  
pp. 6565-6570 ◽  
Author(s):  
Cesar H. Zambrano ◽  
Anne K. McMullen ◽  
Lisa M. Kobriger ◽  
Phillip E. Fanwick ◽  
Ian P. Rothwell
Keyword(s):  
High Yield ◽  
Group 4 ◽  
Yield Formation ◽  
Group 4 Metal

Ten-Vertex Polyhedral Monocarbaborane Chemistry. The Novel High-Yield Formation of the Ten-Vertex closo Compound [6-(PMe2Ph)-closo-1-CB9H9] from the Thermolysis of [8,8-(PMe2Ph)2-nido-8,7-PtCB9H11]

1993 ◽  
Vol 58 (12) ◽  
pp. 2924-2935 ◽  
Author(s):  
Jane H. Jones ◽  
Bohumil Štíbr ◽  
John D. Kennedy ◽  
Mark Thornton-Pett
Keyword(s):  
Nmr Spectroscopy ◽  
Diffraction Analysis ◽  
High Yield ◽  
Monoclinic Space Group ◽  
The Novel ◽  
X Ray Diffraction ◽  
Metal Centre ◽  
X Ray ◽  
Yield Formation ◽  
Boiling Toluene

Thermolysis of [8,8-(PMe2Ph)2-nido-8,7-PtCB9H11] in boiling toluene solution results in an elimination of the platinum centre and cluster closure to give the ten-vertex closo species [6-(PMe2Ph)-closo-1-CB9H9] in 85% yield as a colourles air stable solid. The product is characterized by NMR spectroscopy and single-crystal X-ray diffraction analysis. Crystals (from hexane-dichloromethane) are monoclinic, space group P21/c, with a = 903.20(9), b = 1 481.86(11), c = 2 320.0(2) pm, β = 97.860(7)° and Z = 8, and the structure has been refined to R(Rw) = 0.045(0.051) for 3 281 observed reflections with Fo > 2.0σ(Fo). The clean high-yield elimination of a metal centre from a polyhedral metallaborane or metallaheteroborane species is very rare.

A Family of Group 4 Metal Alkoxo Complexes with an M3(3-O) Core Relevant to Ziegler–Natta Catalyst Intermediates

2003 ◽  
Vol 9 (1) ◽  
pp. 181-190 ◽  
Author(s):  
Józef Utko ◽  
Szymon Przybylak ◽  
Lucjan B. Jerzykiewicz ◽  
Sławomir Szafert ◽  
Piotr Sobota
Keyword(s):  
Group 4 ◽  
Natta Catalyst ◽  
Group 4 Metal ◽  
Ziegler Natta Catalyst

Ancillary Ligand Effect on Single-Site Styrene Polymerization:  Isospecificity of Group 4 Metal Bis(phenolate) Catalysts

2003 ◽  
Vol 125 (17) ◽  
pp. 4964-4965 ◽  
Author(s):  
Carmine Capacchione ◽  
Antonio Proto ◽  
Henner Ebeling ◽  
Rolf Mülhaupt ◽  
Klaus Möller ◽  
...  
Keyword(s):  
Single Site ◽  
Ancillary Ligand ◽  
Ligand Effect ◽  
Styrene Polymerization ◽  
Group 4 ◽  
Group 4 Metal

NSSN-Type Group 4 Metal Complexes in the Ring-Opening Polymerization of l-Lactide

2021 ◽  
Author(s):  
Salvatore Impemba ◽  
Giuseppina Roviello ◽  
Stefano Milione ◽  
Carmine Capacchione
Keyword(s):  
Metal Complexes ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Type Group ◽  
Group 4 ◽  
Group 4 Metal
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