102,001 research outputs found
Cp* Chemistry of main-group elements
No full textJutzi P, Reumann G. Cp* Chemistry of main-group elements. JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS. 2000;(14):2237-2244.In the chemistry of main-group elements the pentamethylcyclopentadienyl (Cp*) group represents a very important substituent. Owing to its quite variable bonding modes, ranging from mainly ionic to mainly covalent and from eta(5) via eta(2/3) to eta(1), an effective adjustment to the electronic situation at the respective element centre is feasible. Furthermore, the steric requirements of the sigma- or pi-bound Cp* group enable the kinetic stabilization of otherwise highly reactive species. Covalent Cp*-element bonds are comparatively weak, consequently allowing fast sigmatropic and haptotropic rearrangement processes. A further consequence is that the Cp* radical as well as the Cp*(-) anion are potential leaving groups. This phenomenon forms the basis of a rich faceted substitution and elimination chemistry. As proof of this statement, several examples from phosphorus, silicon, and gallium chemistry are presented
Ad Magnificum Dn. Prorectorem, Virum Admodum Reverendum [et] Amplissimum Dn. Christophorum Franckium ... Collegam honoratissimum: Cum Magistratu suo abiturus Sceptra Academica illi traderet / Elegia D. G. Morhofi
No full textCharacterization, prediction and evolution of plant peroxisomal targeting signals type 1 (PTS1s)
No full textAd Virum Pl. Reverendum ac Amplissimum Dn. Nicolaum Alardum ... cum ipso Bonifacii die V. scil. Junii SS. Theologiae Doctor renunciaretur / Epigramma D. G. Morhofi
No full textNovel Ga2N2 ring systems by reaction of pentamethylcyclopentadienylgallium with organic azides
No full textJutzi P, Neumann B, Reumann G, Stammler H-G. Novel Ga2N2 ring systems by reaction of pentamethylcyclopentadienylgallium with organic azides. ORGANOMETALLICS. 1999;18(10):2037-2039.Two different types of compounds are observed in the kinetically controlled reaction of pentamethylcyclopentadienylgallium (Cp*Ga) (1) with organic azides: the dimeric iminogallane (eta(1)-Cp*GaNXyl)(2) (2) and the dimeric azide-bridged gallane [(eta(1)-Cp*)Ga(mu(2)-N-3){N(SiMe3)(2)}](2)(4). The solid-state structures of 2 and 4 are discussed
Elegia Admodum Reverendo Amplissimoq[ue] Viro, Dn Adamo Tribbechovio ... : Nunc Serenissimi Principis Ernesti Saxoniae Ducis &c. Consiliario Ecclesiastico, Amicdo suo Optimo Gotham Abeunti / Scripta a D. G. Morhofio
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Nobilissimis Amplissimisque Duum Viris Dn. Caspari Schwartzkopff ... & Dn. Caspari Voigt/ hactenus Senatori, In Ordinem Consulum Vismariae cooptatis / D. G. Morhofius
No full textIn Nuptias Viri Clariss. [et] Doctissimi Dni. Johannis Schultzen/ Rectoris Scholae Gardelegiensis meritissimi, Et ... Dorotheae Falcken. die VI. Maii, Gardelegiae celebratas / Epigramma D. G. Morhofi
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