D. Kovala-demertzi et al., Preparation, spectral and structural characterization of (2-benzoylpyridine N(4)-methyl-N(4)-phenylthiosemicarbazonato) chloropalladium(II), TRANSIT MET, 24(6), 1999, pp. 642-647
The synthesis, as well as spectral and structural characterization, of (2-b
I), [Pd(Bz4MePh)Cl], is described. The unit cell contains two crystallograp
hically independent molecules [Pd(1)(Bz4MePh)Cl], (1), and [Pd(2)(Bz4MePh)C
l], (2), stabilized by intra- and intermolecular hydrogen bonding. The dist
ance between the Pd(1) and Pd(2) centres is 3.5038(11) Angstrom. The spectr
oscopic techniques used in this study are the following: u.v.-visible, i.r.
and H-1 n.m.r. The protonation constants, determined spectrophotometricall
y, of the uncoordinated HBz4MePh are pK(a1) = 10.82 +/- 0.03 and pK(a2) = 4
.09 +/- 0.02.