Crystal and molecular structure of chloro(2,2?,2?-terpyridine)palladium(II)chloride dihydrate, C15H15Cl2N3O2Pd

Abstract

The crystal and molecular structure of chloro(2,2',2"-terpyridine)palladium(II)-chloride dihydrate, C15HtsC12N302Pd, has been determined by single crystal X-ray diffraction techniques. The crystals are orthorhombic: space group Pna21, a = 17-217(9), b = 14"026(8), c = 6-801(5)/~, Z = 4. Least-squares refinement of 2064 non-zero manually gathered diffractometer reflexions was carried out to a conventional unweighted R of 0.069. The molecule consists of a basically planar 4-coordinate [Pd(terpy)C1] § cation and a CI-anion. The molecules are packed in a layer structure in which the average separation is about 3.4 /~, the closest approach being 3.13/~ between a palladium atom and one of the nitrogen atoms of a neighboring molecule. Bond distances are within acceptable limits of predicted values. Deviations from planarity in the coordinated terpyridine ligand are presumably due to its steric limitations and are similar to those found in other terpyridine complexes.

Structural studies and cytotoxic activity of a new dinuclear coordination compound of palladium(II)–2,2′:6′,2″‐terpyridine with rigid dianionic 1,2,4‐triazole‐3‐sulfonate linker

“…The aromatic ring interactions generate one‐dimensional chains running along the c ‐axis as shown in Figure , hence stabilizing the molecular packing of molecules in compound 1 . The same type of such a weak π⋅⋅⋅π interaction of ca 3.7 Å between the terpy units has also been observed in a number of coordination compounds containing [Pd(terpy)] units …”

Cationic Pd(II)/Pt(II) 5,5-diethylbarbiturate complexes with bis(2-pyridylmethyl)amine and terpyridine: Synthesis, structures,DNA/BSA interactions, intracellular distribution, cytotoxic activity and induction of apoptosis

“…2). The M-N(terpy) bond distances in the cation are typical of those found in Pd(II)/Pt(II) complexes containing terpy [24,25,[36][37][38]. Moreover, the M-N(barb) bond distances in 1-4 are well within the range reported for Pd(II)/Pt(II) complexes containing barb [18][19][20][21].…”

“…The precursor complexes, namely [MCl(bpma)]Cl·H 2 O [22,23] and [MCl(terpy)]Cl·2H 2 O [24,25] (M = Pd II or Pt II ), were prepared following the literature methods. Tris(hydroxymethyl)aminomethane hydrochloride (TrisHCl), ethidium bromide (EB), Hoechst 33258, pBR322 plasmid DNA, FS-DNA and BSA were obtained from Sigma, and loading buffer (10×) from was obtained from Dr. Zeydanli.…”

A palladium(II) complex of 4′-(4-pyridyl)-2,2′:6′,2″-terpyridine: Lattice control through an interplay of stacking and hydrogen bonding effects

“…3) supported by short PdÁ Á ÁPd contacts (Pd1Á Á ÁPd1i = 3.367(1), Pd1Á Á ÁPd1ii = 3.440(1) Å ; symmetry codes: i = À x, 1 À y, 1 À z, ii = 1 À x, 1 À y, 1 À z). Such stacking has been observed in a number of complexes containing {Pd(tpy)} or {Pt(tpy)} units [18,[20][21][22][23][24][25][26][27][28], while in other cases close contacts occur only between pairs of metal centres [27,[29][30][31][32][33][34][35]. The PdÁ Á ÁPd distances observed between the [Pd(1)Cl] + units in [Pd(1)Cl]Cl AE 3H 2 O AE DMF are typical of those observed in other systems.…”