首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Photoelectron Spectroscopy and Thermochemistry of tert-Butylisocyanide-Substituted Cobalt Tricarbonyl Nitrosyl
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Photoelectron Spectroscopy and Thermochemistry of tert-Butylisocyanide-Substituted Cobalt Tricarbonyl Nitrosyl

机译:叔丁基异氰化物取代的钴三羰基亚硝基的光电子能谱和热化学

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摘要

A new organometallic complex,Co(CO)_2NO~tBuNC,was synthesized and investigated by photoelectron spectroscopy(PES)and threshold photoelectron photoion coincidence(TPEPICO)spectrometry in order to determine its ionization energy as well as the bond energies in the ionic forms.The assignment of the nine peaks in the PES was based on Kohn-Sham molecular orbital energies,and an adiabatic ionization energy of 7.30 ± 0.05 eV was determined.In the TPEPICO experiment,the following 0 K onsets were determined for the various fragment ions:CoCONO~tBuNC~+(8.17 ± 0.05 eV);CoNO~tBuNC~+(9.01 ± 0.05 eV);and Co~tBuNC~+(10.42 ± 0.05 eV).Because the photon source did not extend above 14 eV,we could not observe the bare Co~+ ion in the experiment.The heat of formation of the Co~tBuNC~+ ion was estimated by ab initio and DFT calculations of the CoL~+ + ~tBuNC -> Co~tBuNC~+ + L(L = CO,NO,NH3,H2O,PMe3)substitution enthalpies.
机译:合成了一种新型的有机金属配合物Co(CO)_2NO〜tBuNC,并通过光电子能谱(PES)和阈值光电子能重合(TPEPICO)光谱法对其进行了研究,以确定其电离能以及离子形式的键能。 PES中的9个峰的分配基于Kohn-Sham分子轨道能,并确定了7.30±0.05 eV的绝热电离能。在TPEPICO实验中,确定了以下0 K起始于各种碎片离子: CoCONO〜tBuNC〜+(8.17±0.05 eV); CoNO〜tBuNC〜+(9.01±0.05 eV);和Co〜tBuNC〜+(10.42±0.05 eV)。由于光子源未扩展到14 eV以上,我们可以在实验中没有观察到裸露的Co〜+离子。 L = CO,NO,NH3,H2O,PMe3)替代焓。

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