scholarly journals Innenrücktitelbild: Barium Dibenzopentalenide as a Main-Group Metal η8Complex: Facile Synthesis from 1,4-Dilithio-1,3-butadienes and Ba[N(SiMe3)2]2, Structural Characterization, and Reaction Chemistry (Angew. Chem. 41/2013)

2013 ◽  
Vol 125 (41) ◽  
pp. 11111-11111 ◽  
Author(s):  
Heng Li ◽  
Baosheng Wei ◽  
Ling Xu ◽  
Wen-Xiong Zhang ◽  
Zhenfeng Xi
Keyword(s):  
Structural Characterization ◽  
Main Group ◽  
Facile Synthesis ◽  
Group Metal ◽  
Main Group Metal

Structural characterization of heteropolymeric iron and main group metal complexes

2012 ◽  
Vol 35 (1-2) ◽  
pp. 1-11
Author(s):  
Milan Melnik ◽  
Ondrej Sprušanský ◽  
Ján Garaj
Keyword(s):  
Metal Complexes ◽  
Structural Characterization ◽  
Main Group ◽  
Group Metal ◽  
Main Group Metal

Lewis-Base Adducts of Main Group Metal(I) Compounds. XI. Di-μ-iodo-bis(N,N,N′,N″,N″-pentamethyldiethylenetriamine-N,N′,N″-sodium)

1989 ◽  
Vol 42 (8) ◽  
pp. 1393 ◽  
Author(s):  
CL Raston ◽  
CR Whitaker ◽  
AH White
Keyword(s):  
Single Crystal ◽  
Structural Characterization ◽  
Structure Determination ◽  
Main Group ◽  
Lewis Base ◽  
Coordination Complex ◽  
X Ray ◽  
Group Metal ◽  
Main Group Metal

The synthesis and structural characterization of the 1:1 adduct of sodium(I) iodide and N,N,N′,N″,N″- pentamethyldiethylenetriamine (pmdeta), a novel coordination complex of sodium(I), is recorded. Single-crystal X-ray structure determination shows the compound to be a �,�′- diiodo-bridged dimer, with the tridentate base making up the five-coordinate environment of sodium: [( pmdeta )NaI2Na( pmdeta )]. Crystals are triclinic, P1, a 10.113(2),b 9.470(2), c 8.793(4) � , α 114.48(2), β 92.09(2), γ 96-65(1)°, Z= 1 dimer ; R was 0.037 for 1837 'observed' reflections.

scholarly journals Synthesis and structural characterization of arsinoamides – early transition metal (Zr and Hf) and main group metal (Al, In, Sn, and Pb) complexes

2019 ◽  
Vol 48 (40) ◽  
pp. 15207-15211
Author(s):  
Xiao Chen ◽  
Michael T. Gamer ◽  
Peter W. Roesky
Keyword(s):  
Transition Metal ◽  
Structural Characterization ◽  
Main Group ◽  
Early Transition Metal ◽  
Group Metal ◽  
Main Group Metal ◽  
Early Transition

The following complexes were synthesized: [(Mes2AsNPh)2MCl2(THF)], [(Mes2AsNPh)2M(NMe2)2] (M = Zr, Hf), [(Mes2AsNPh)AlCl2(THF)], [(Mes2AsNPh)InCl3][Li(THF)4], [(Mes2AsNPh)2E] (E = Sn, Pb).

Reversible Addition of Carbon Dioxide to Main Group Metal Complexes at Temperatures about 0 °C

2021 ◽  
Author(s):  
Tatyana S. Koptseva ◽  
Vladimir G. Sokolov ◽  
Sergey Yu. Ketkov ◽  
Elena A. Rychagova ◽  
Anton V. Cherkasov ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Metal Complexes ◽  
Main Group ◽  
Group Metal ◽  
Reversible Addition ◽  
Main Group Metal

Effect of delocalization of nonbonding electron density on the stability of the M–Ccarbene bond in main group metal-imidazol-2-ylidene complexes: a computational and structural database study

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Samuel Tetteh ◽  
Albert Ofori
Keyword(s):  
Electron Density ◽  
Lone Pair ◽  
Main Group ◽  
Binding Energies ◽  
Electrostatic Model ◽  
Group Metal ◽  
Main Group Metal ◽  
Structural Database ◽  
The Stability ◽  
Lone Pair Electrons

Abstract The M–Ccarbene bond in metal (M) complexes involving the imidazol-2-ylidene (Im) ligand has largely been described using the σ-donor only model with donation of σ electrons from the sp-hybridized orbital of the carbene carbon into vacant orbitals on the metal centre. Analyses of the M–Ccarbene bond in a series of group IA, IIA and IIIA main group metal complexes show that the M-Im interactions are mostly electrostatic with the M–Ccarbene bond distances greater than the sum of the respective covalent radii. Estimation of the binding energies of a series of metal hydride/fluoride/chloride imidazol-2-ylidene complexes revealed that the stability of the M–Ccarbene bond in these complexes is not always commensurate with the σ-only electrostatic model. Further natural bond orbital (NBO) analyses at the DFT/B3LYP level of theory revealed substantial covalency in the M–Ccarbene bond with minor delocalization of electron density from the lone pair electrons on the halide ligands into antibonding molecular orbitals on the Im ligand. Calculation of the thermodynamic stability of the M–Ccarbene bond showed that these interactions are mostly endothermic in the gas phase with reduced entropies giving an overall ΔG > 0.

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