Main Group Metal Compounds Research Articles

Syntheses and Structures of Main Group Metal Complexes of the S(NtBu)32-Dianion, an Inorganic Y-Conjugated Tripod

The metal metathesis reactions of [Li4{(NtBu)3S}2], 1, with various main group metal compounds are investigated. The reactions of 1 with group 14 metal(II) halides result in decomposition of the S(NtBu)32- dianion and subsequent formation of cubane-type structures of the metal tert-butylamides. In the reaction of GeCl2 with 1 a GeS double bond is formed. While the use of 1·thf initiates a complex redox reaction affording the mixed-valence Ge(II)/Ge(IV) complex [Ge4(S)(NtBu)4], 2, partial metal metathesis is achieved by employing metal(II) bis[bis(trimethylsilyl)amides] in reactions with 1. The mixed-metal complexes [(thf)2CaLi2{(NtBu)3S}2], 3, [(thf)2Ba2Li{N(SiMe3)2}{(NtBu)3S}2], 4, and [(thf)LiSn{N(SiMe3)2}{(NtBu)3S}], 5, were synthesized and structurally investigated. A closer inspection of the structural parameters of the complexes 3−5 reveals some of the intriguing ligand properties of the S(NtBu)32- dianion like the flexible electronic structure, the favorable cap-shaped geometry, and the Lewis base ...

The angular overlap model as a unified bonding model for main group and transition metal compounds: A version suitable for undergraduate inorganic students

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe angular overlap model as a unified bonding model for main group and transition metal compounds: A version suitable for undergraduate inorganic studentsD. E. Richardson Cite this: J. Chem. Educ. 1993, 70, 5, 372Publication Date (Print):May 1, 1993Publication History Received3 August 2009Published online1 May 1993Published inissue 1 May 1993https://doi.org/10.1021/ed070p372RIGHTS & PERMISSIONSArticle Views868Altmetric-Citations27LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (6 MB) Get e-Alerts Get e-Alerts

ChemInform Abstract: Coordinative Aspects of Single Electron Exchange Between Main Group or Transition Metal Compounds and Unsaturated Organic Substrates

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Preparation and characterisation of main group and transition metal compounds containing ligands with N- and O-donor atoms

Preparation and characterisation of main group and transition metal compounds containing ligands with N- and O-donor atoms

Covalent versus Dative Bonds to Main Group Metals, a Useful Distinction

AbstractTextbooks of inorganic chemistry describe the formation of adducts by coordination of an electron donor to an electron acceptor, often using the amine‐boranes, X3N → BY3, as examples. In the Lewis (electron dot) formulas of the compounds, the dative bond in H3N → BH3 and the covalent bond in H3CCH3 are both represented by a shared electron pair. In the simple molecular orbital or valence bond models the wave functions of both electron pairs would be constructed in the same manner from the appropriate sp3 type atomic orbitals on the bonded atoms; the difference between the covalent and the dative bond becomes apparent only after the orbital coefficients have been analyzed. This may be the reason why many structural chemists seem reluctant to distinguish between the two types of bonds. The object of this article is to remind the reader that the physiocochemical properties of covalent and dative bonds may be – and often are – quite different, and to show that a distinction between the two provides a basis for understanding the structures of a wide range of main group metal compounds.

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

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.

Tmeda-Nickel-Komplexe: III. ( N,N,N′, N′-Tetramethylethylendiamin)-(dimethyl)nickel(II)

(tmeda)Ni(acac) 2 reacts with the main group metal compounds (tmeda)Mg-(CH 3) 2, (tmeda)&[;Al(CH 3) 3&]; 2, and (C 2H 5O)Al(CH 3) 2 at 0°C to give (tmeda)Ni-(CH 3) 2 ( 1), which can be isolated as fine yellow crystals in 50–80% yield. Complex 1, which is the simplest dialkyl nickel(II) compound with a “hard” donor ligand, is surprisingly stable and decomposes only at 79°C. 1 is converted by bipy to (bipy)Ni(CH 3) 2 and by Me 2PC 2H 4PMe 2 to (Me 2PC 2H 4PMe 2)Ni(CH 3) 2. Upon reaction of 1 with strong π-acceptor molecules (acrylic acid methylester, methyl vinyl ketone, acrylonitrile, tetracyanoethene, tetrafluoroethene, maleic anhydride) reductive elimination of the methyl groups takes place to give the complexes (tmeda)Ni(π-ligand) n ( n = 1, 2) and ethane.

Electronic structures of analogous and isoelectronic main group and transition metal compounds - a gas phase (UV)-photoelectron spectroscopic and theoretical study

HeI/II-photoelectron (PE) spectra or respective ionisation potentials and results from self-consistent-charge Xα (SCC-Xα) MO calculations are presented for representative pairs of isosteric molecules from related transition metal and main groups with special emphasis on group 5 15 species (AsF 5/VF 5, Me 3AsCl 2/Me 3TaCl 2, Cl 3PNMe/Cl 3VNMe) and related compounds.

Experimental and theoretical shakeup studies. IV. Main group Me2M (M=Zn,Cd,Hg) compounds

We report the first observation of shakeup in the core level ESCA of main group metal compounds. By recording the C 1s and metal (Zn 2p, Cd 3d, Hg 4f) level of Me2M (M=Zn, Cd, and Hg) to high statistics, satellite structures on the higher binding energy side of the respective primary photolines are observed. The peaks are assigned to shakeup transitions by theoretical Xα–SW calculations. Good agreement for both energies and intensities is obtained for the metal core level spectra. The calculations yield C 1s intensities which are much smaller than those observed experimentally.