1 H, 13 C and 15 N NMR coordination shifts in gold(III), cobalt(III), rhodium(III) chloride complexes with pyridine, 2,2′‐bipyridine and 1,10‐phenanthroline

Au(III), Co(III) and Rh(III) chloride complexes with pyridine (py), 2,2′‐bipyridine (bpy) and 1,10‐phenanthroline (phen) of the general formulae [M 1 LCl 3 ], trans ‐[M 2 L 4 Cl 2 ] + , mer ‐[M 2 L 3 Cl 3 ], [M 1 (LL)Cl 2 ] + , cis ‐[M 2 (LL) 2 Cl 2 ] + , where M 1 = Au; M 2 = Co, Rh; L = py; LL = bpy, phen, were studied by 1 H 13 C HMBC and 1 H 15 N HMQC/HSQC. The 1 H, 13 C and 15 N coordination shifts (the latter from ca − 78 to ca − 107 ppm) are discussed in relation to the type of metal, electron configuration, coordination sphere geometry and the type of ligand. The 13 C and 15 N chemical shifts were also calculated by quantum‐chemical NMR methods, which reproduced well the experimental tendencies concerning the coordination sphere geometry and the ligand type. Copyright © 2006 John Wiley & Sons, Ltd.