Steffen, Author at Steffen's Chemistry Pages

Nov 06

Tetrahydrofurane-d8

By Steffen in NMR, Spectroscopy

NMR- data Chemical shift [ppm] Coupling constants [Hz] 1H 1.72 1J(C,D) 22.0 (C-1) 3.57 20.5 (C-2) 13C 25.2 67.2 17O 16(H2O = 0) H2O/HOD 2.42 Physical data Formula C4D8O Molecular weight [g/mol] 80.15 Density (d420) 0.99 Melting point [°C] -108.5 Boiling point [°C] 64 Inflammation temperature [°C] -17.5 Refraction index (nD20) 1.4043 Dynamic viscosity …

Nov 06

Toluene-d8

By Steffen in NMR, Spectroscopy

NMR- data Chemical shift [ppm] (Multiplicity) Coupling constants [Hz] 1H 2.09 (5) 1J(C,D) 22.0 (CD3) 6.97 (H-1) (m) 24.0 (C-2,C-3) 7.09 (H-2) (m) 19.0 (C-4) 7.01 (H-3) 2J(H,D) 2.2 13C 20.4 (7) 125.49 (3) 128.33 (3) 129.24 (3) 137.86 3J(H,D) 1.2 (H-1) H2O/HOD Shift 0.45 1.1 (H-2,H-3) Physical data Formula C7D8 Molecular weight [g/mol] …

Nov 06

Trifluoroacetic acid-d1

By Steffen in NMR, Spectroscopy

NMR- data Chemical shift [ppm] (multiplicity) Coupling constants [Hz] 1H 11.5 1J(C,F) 283 13C 116.5 (4) 2J(C,F) 44 164.4 (4) 19F -78.5(CFCl3 = 0) H2O/HOD Shift 11.5 Physical data Formula C2DF3O2 Molecular weight [g/mol] 115.03 Density (d420) 1.5 Melting point [°C] -15 Boiling point [°C] 71 Inflammation temperature [°C] – Refraction index (nD20) 1.285 …

Nov 05

My first android app NMRTables

By Steffen in Apps

With NMRTables I finished my first Android app . I have used AppInventor to do this and there especially the Web viewer module. This means that the app fetches its data from my server. This has the advantage that incorporated any necessary corrections quickly and not the app needs to be updated as such. Before …