Alfred Ross

5 Questions 147 Answers 0 Followers

Questions related from Alfred Ross

Estimate of the Anisotropies of the Diamagnetic Susceptibility of Molecules in Solution?

Dear Scientists and Experts, is there an "simple" (e.g. calculating aromatic overall surface, charges,....) approach to ESTIMATE the anisotropy of the diamagnetic susceptibility of an organic...

23 May 2023 3,545 0 View

Non degenerate chemical shifts of 13C of tert-butyl in solid state CP-MAS NMR?

Dear NMR colleagus, as a novice in solid-state NMR I dare to aks whether the three methyl groups of a tert-butyl moiety in a organic molecule may show distinct NMR signals in a 13C CP-MAS...

19 February 2016 7,550 4 View

Is the protonation of sulphate by use of 33S NMR in a solid possible?

I am looking for somebody who has experience in the use of 33S solid-state NMR for the determination of the protonation state of a sulphate counterion of a "salt" of a drug molecule in a...

27 June 2014 4,378 2 View

What is the difference of chemical shift/spin state between 99Tc ground and 99mTc excited state?

Definitely purely academic: I recently saw an article on NMR of 99Tc which is spin 9/2. For this nucleus, there exists an excited state which is called 99mTc. This state decays by gamma-emission...

19 March 2014 2,743 5 View

Looking for a NMR lab which has 500 or 600 MHz without digital filtering.

I am looking for a laboratory which has a 500 or 600 MHz Bruker NMR machine without digital filtering. I would like to send you one liquid sample in a NMR tube for a quick 1D NMR measurement which...

07 May 2013 1,928 3 View