73Ge,119Sn and207Pb: general cooperative effects of single atom ligands on the NMR signals observed in tetrahedral [MXnY4-n] (M = Ge, Sn, Pb; 1 ≤ n ≤ 4; X, Y = Cl, Br, I) coordination compounds of heavier XIV group elements.
An inverse linear relationship between73Ge,119Sn and207Pb NMR chemical shifts and the overall sum of ionic radii of coordinated halido ligands has been discovered in tetrahedral [MXnY4-n] (M = Ge, Sn, Pb; 1 ≤ n ≤ 4; X, Y = Cl, Br, I) coordination compounds. This finding is consistent with a previously reported correlation found in octahedral, pentacoordinate and square planar platinum complexes. The effect of the coordinated halido ligands acting on the metal as shielding conducting rings is therefore confirmed also by73Ge,119Sn and207Pb NMR spectroscopy.
Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, I-73100 Lecce, Italy. michele.benedetti@unisalento.it fp.fanizzi@unisalento.it.
M
http://orcid.org/0000-0001-9936-9649
M
Benedetti
Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, I-73100 Lecce, Italy. michele.benedetti@unisalento.it fp.fanizzi@unisalento.it.
F
F
De Castro
Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, I-73100 Lecce, Italy. michele.benedetti@unisalento.it fp.fanizzi@unisalento.it.
F P
http://orcid.org/0000-0003-3073-5772
FP
Fanizzi