Axel Klein

6 Questions 174 Answers 0 Followers

Questions related from Axel Klein

Examples for square double pyramidal coordination for Cu(II)?

Dear all, we have a single-crystal XRD-based structure showing seemingly a Cu(II) complex with two elongated axial ligands, but not one on each side of the square planar CuL4 plane, which is an...

18 November 2021 10,075 0 View

Why does C-H activation work well for Pd(II) and Pt(II), but not for Ni(II)?

The C-H activation in the Ni - Pd - Pt triad is very different. While Pt(II) and also Pd(II) is able to activate C-H bonds (especially arene C-H), Ni(II) seems to be unable to do so. What are the...

07 September 2015 7,664 10 View

Could claims of anisotropic EPR spectra in fluid solutions be genuine or are they artifacts of flawed measurements?

Frequently, there are reports of non-symmetric, anisotropic EPR spectra in fluid solution. Basically, if the molecules tumble perfectly in the solution any molecular magnetic anisotropy will be...

19 May 2015 4,307 11 View

Does the order or disorder of CF3 groups depend on the crystal structure?

CF3 groups in crystal structures are often disordered. However, there are also examples with ordered CF3 groups. My impression is, that the crystal structure might be determining. E.g. I have...

30 March 2015 10,043 7 View

Where does the expression "Dq" for the splitting of the ligand field comes from?

Please don't tell me what the ligand field is. I mean: what means "Dg" literally? It must be an abbreviation, but of which expression?

18 October 2012 4,794 11 View

Number of Reviews vs. Publications

Dear all, How much paper reviews must a researcher write for journals to compensate the reviewing effort by the journals necessary for his/her publications? Vincent Raoult concludes from his...

01 January 1970 8,601 1 View