Siliconoid Expansion by a Single Germanium Atom through Isolated Intermediates

نویسندگان

چکیده

Das Wachstum von (Halb-)Metallclustern ist entscheidend für Keimbildungsprozesse in gasförmigen und kondensierten Phasen. Wir berichten nun über die Isolierung Zwischenprodukten während der Erweiterung eines stabilen, ungesättigten Siliciumclusters (Silicoid) um ein einzelnes Germaniumatom durch eine Abfolge Substitution, Umlagerung Reduktion. Die Reaktion ligato-lithiiertem Hexasilabenzpolaren LiSi6Tip5 (Li⋅(thf)2, Tip=2,4,6-Triisopropylphenyl) mit GeCl2⋅NHC (NHC=1,3-Diisopropyl-4,5-dimethylimidazol-2-yliden) liefert zunächst das Produkt exohedraler Germanium(II)-Funktionalität, dann Si−Si Bindung des Si6-Gerüsts insertiert. gleichzeitige Übertragung Chlorfunktionalität Germanium auf benachbartes Siliciumatom bewahrt elektronenpräzise Natur gebildeten endohedralen Germylens. Der vollständige Einbau Germaniumheteroatoms den Si6Ge-Clusterkern wird schließlich entweder Reduktion unter Verlust koordinierenden NHC oder direkt 1Li⋅(thf)2 GeCl2⋅1,4-Dioxan erreicht.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Modeling Linear and Cyclic PKS Intermediates through Atom Replacement

The mechanistic details of many polyketide synthases (PKSs) remain elusive due to the instability of transient intermediates that are not accessible via conventional methods. Here we report an atom replacement strategy that enables the rapid preparation of polyketone surrogates by selective atom replacement, thereby providing key substrate mimetics for detailed mechanistic evaluations. Polyketo...

متن کامل

Atom-atom entanglement by single-photon detection.

A scheme for entangling distant atoms is realized, as proposed in the seminal paper by [C. Cabrillo et al., Phys. Rev. A 59, 1025 (1999)]. The protocol is based on quantum interference and detection of a single photon scattered from two effectively one meter distant laser cooled and trapped atomic ions. The detection of a single photon heralds entanglement of two internal states of the trapped ...

متن کامل

Photon entanglement detection by a single atom

We use a single trapped 40Ca ion as a resonant, polarizationsensitive absorber to detect and characterize the entanglement of tunable narrowband photon pairs from a spontaneous parametric down-conversion source. Single-photon absorption is marked by a quantum jump in the ion and heralded by coincident detection of the partner photon. For three polarization basis settings of the absorption and d...

متن کامل

A Single-Atom Optical Switch

Quantum scientists over the past two decades have dreamt of realizing powerful new information technologies that exploit the laws of quantum mechanics in their operation. While many approaches are being pursued, a prevailing choice consists of using single atoms and particles of light—single photons—as the fundamental building blocks of these technologies [1]. In this paradigm, one envisions th...

متن کامل

Scattering of an Exponential Pulse by a Single Atom

We discuss the scattering of a light pulse by a single atom in free space using a purely semi-classical framework. The atom is treated as a linear elastic scatterer allowing to treat each spectral component of the incident pulse separately. For an increasing exponential pulse with a dipole radiation pattern incident from full solid angle the spectrum resulting from interference of incident and ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Angewandte Chemie

سال: 2022

ISSN: ['1521-3773', '1433-7851', '0570-0833']

DOI: https://doi.org/10.1002/ange.202205399