Studies on the Ru(II) monocationic complexes [RuCl2(NO)(P-N)(PR3)]PF6, where P-NÂ =Â o-diphenylphosphino-N,N-dimethylaniline, and RÂ =Â Ph and p-X-C6H4 (XÂ =Â OMe, Me, F)

The monocationic Ru(II) complexes [RuCl2(NO)(P-N)(PR3)]PF6; P-N = o-diphenylphosphino-N,N′-dimethylaniline, and R = p-MeO-C6H4 (complex 2), p-Me-C6H4 (3), Ph (4), and p-F-C6H4 (5) were synthesized and studied. A known, empirical inverse correlation between the δP value and the Ru-P bond length of the P-N ligand that exists for a series of cis- and trans-RuX2(L)(P-N)(PR3) complexes (X = Cl or Br), where L is a range of small molecules, is extended with L = NO+ and now covers the respective ranges of about 30-80 ppm and 2.39-2.17 Å.79