scholarly journals The mechanistic investigations of photochemical carbonyl elimination and oxidative addition reactions of (η5-C5H5)M(CO)3, (M = Mn and Re) complexes

RSC Advances ◽  
2018 ◽  
Vol 8 (20) ◽  
pp. 10987-10998 ◽  
Author(s):  
Zheng-Feng Zhang ◽  
Ming-Der Su

The theoretical works suggest that under UV photoirradiation, η5-CpMn(CO)3 follows either the conical intersection mechanism or the intersystem crossing mechanism to obtain the final oxidative addition product. However, η5-CpRe(CO)3 proceeds only the singlet state channel.

2016 ◽  
Vol 18 (24) ◽  
pp. 16396-16403 ◽  
Author(s):  
Shih-Hao Su ◽  
Ming-Der Su

A model study of the photoactivation reactions of Si–H bonds in trimethylsilane by group 5 (η5-C5H5)M(CO)4(M = V, Nb and Ta;Rea-S0-M) complexes is undertaken using the M06-2X/Def2-SVPD level of theory.


RSC Advances ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 2626-2640
Author(s):  
Zheng-Feng Zhang ◽  
Ming-Der Su

Model study of the photoactivation reactions for Si–H bonds in trimethylsilane for group 8 M(CO)5 (M = Fe, Ru, and Os) complexes using the CASSCF and MP2-CAS levels of theory.


1980 ◽  
Vol 45 (2) ◽  
pp. 406-414 ◽  
Author(s):  
Jiří Svoboda ◽  
Oldřich Paleta ◽  
Václav Dědek

Dimerisation of trifluoropropenenitrile (I) in the presence of potassium fluoride and tertiary amines afforded a mixture of stereoisomeric perfluoro-4-methyl-pentenedinitriles (II), higher-boiling compounds, and 2,3,3,3-tetrafluoropropanenitrile (III) which arises by proton transfer from the solvent molecule. Under optimum conditions, product II was obtained in about 50% yield. Reaction of the nitrile I with methyl trifluoropropenoate (IV) gave, besides the dimers II and V, the product of addition of the nitrile I to the propenoate, IV, i.e. methyl 4-cyanoperfluoro-2-pentenoate (VI), and the addition product of the propenoate IV to the nitrile I, i.e. methyl 4-cyanoperfluoro-2-methyl-3-butenoate (VII). The relative reactivity if I and IV is discussed. The ratio of stereoisomers in II, V, VI and VII indicates that the magnitude of the steric substituent effect, operating in the reaction mechanism, decreases in the order -CFCF3.(COOCH3) > -CFCF3(CN) > -COOCH3 > -CN.


Polyhedron ◽  
2021 ◽  
Vol 198 ◽  
pp. 115083
Author(s):  
Aziza Ahmida ◽  
Fatin M. Elmagbari ◽  
Hans Egold ◽  
Gerald Henkel

2018 ◽  
Vol 37 (15) ◽  
pp. 2450-2467 ◽  
Author(s):  
Ryley Kehoe ◽  
Markshun Mahadevan ◽  
Adeela Manzoor ◽  
Gillian McMurray ◽  
Patrick Wienefeld ◽  
...  

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