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Tetrahedral molecular geometry

About: Tetrahedral molecular geometry is a research topic. Over the lifetime, 1795 publications have been published within this topic receiving 30706 citations.


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Journal ArticleDOI
TL;DR: On the basis of spectral studies a four coordinated tetrahedral geometry is assigned for Ni(L)X type complexes whereas the adducts were found to have a six coordinated distorted octahedral geometry.

44 citations

Journal ArticleDOI
TL;DR: In this paper, a tetrahedral geometry around the tin atom with space group P 1 ¯ has been deduced and compared both in solution and solid states, and the crystal structure of compound 5 has been determined by X-ray single crystal analysis.

44 citations

Journal ArticleDOI
TL;DR: In this article, structural analysis of [Ph2P(4-methylbenzylide)2]2Ba represents the first organobarium compound not belonging to the cyclopentadienyl series.

43 citations

Journal ArticleDOI
TL;DR: A series of novel aluminium complexes containing cyclic β-ketiminato ligands of type Me2Al have been prepared in high yields and revealed that they have a distorted tetrahedral geometry around Al, and both bond distances and bond angles were considerably influenced by the ligand structure.
Abstract: A series of novel aluminium complexes containing cyclic β-ketiminato ligands of type Me2Al{O-[(ArNCHC4H4(C6H4))]} (3a, Ar = 2,6-iPr2C6H3; 3b, Ar = C6H5; 3c, Ar = C6F5) have been prepared in high yields These complexes were identified by 1H, 13C NMR spectroscopy and elemental analysis X-ray structural analyses for 3a–c revealed that these complexes have a distorted tetrahedral geometry around Al, and both bond distances and bond angles were considerably influenced by the ligand structure These complexes were tested as catalyst precursors for ring-opening polymerisation of e-caprolactone (e-CL) and L-lactide (L-LA) in the presence of 2-propanol as an initiator Complex 3a could polymerize e-CL in a controlled manner with high efficiency Based on the living characteristics, the preparation of well-defined block copolymers PCL-b-PLLA via sequential addition of monomers was performed by 3a Note that complex 3c exhibited rather high catalytic activity for the ROP of L-LA with narrow molecular weight distribution The monomer conversion reached completion only in 4 h when the L-LA/Al molar ratio was 100 at 80 °C PLLA-b-PCL copolymers were thus easily produced by 3c

43 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202314
202240
202143
202039
201939
201847