Etude par spectre UV du dimesitylcarbene forme par photolyse du dimethyl diazomethane. Equilibre entre les etats singulet et triplet du carbene. L'etat singulet reagit avec le methanol, le propanol-1 et le cyclohexadiene-1,3, alors que l'etat triplet se dimerise en olefine ou reagit avec l'oxygene
Etude par spectre UV du dimesitylcarbene forme par photolyse du 二甲基重氮甲烷。Equilibre entre les etats singulet 和三重卡宾。L'etat singulet avec le 甲醇, le propanol-1 和 le cyclohexadiene-1,3, alors que l'etat 三重酶二聚体 en 烯烃 ou reagit avec l'oxygene
Dimesitylcarbene: the distinct chemistries of its singlet and triplet states
作者:Avtar S. Nazran、David Griller
DOI:10.1039/c39830000850
日期:——
Dimesitylcarbene is unique amongst the diarylcarbenes thus far investigated since its triplet state cannot readily convert into the singlet state.
迄今为止,在二芳基卡宾中,二苯甲基卡宾是独特的,因为其三重态不能轻易转化为单重态。
Diazoalkanes react with a bis(phosphino)borate copper(i) source to generate [Ph2BPtBu2]Cu(η1-N2CR2), [Ph2BPtBu2]Cu(CPh2), and [Ph2BPtBu2]Cu–N(CPh2)(NCPh2)
作者:Neal P. Mankad、Jonas C. Peters
DOI:10.1039/b713687k
日期:——
[Ph2BPtBu2]CuâL complexes react with diazoalkanes to generate structurally unusual η1-diazoalkane adducts, a terminal carbene, and an η1-azine adduct.
Copper and Silver Carbene Complexes without Heteroatom-Stabilization: Structure, Spectroscopy, and Relativistic Effects
作者:Matthias W. Hussong、Wilhelm T. Hoffmeister、Frank Rominger、Bernd F. Straub
DOI:10.1002/anie.201504117
日期:2015.8.24
silver carbenecomplex were prepared from dimesityl diazomethane, made possible by the steric shielding of the N‐heterocyclic carbene (NHC) ancillary ligand IPr**. The mint‐green complex [IPr**Ag=CMes2]+[NTf2]− is the first isolated silver carbenecomplex without heteroatom donor substituents. Single‐crystal X‐ray diffraction provides evidence for a predominant carbenoid character, and supports the postulation