Crystal and molecular structure of tetrakis(thiourea)palladium(II) chloride

Structure of tetrakis(1,3-thiazolidine-2-thione)palladium(II) dichloride–1,3-thiazolidine-2-thione (1:2)

“…The Pd atom occupies a crystallographic centre of symmetry and is bound to four ligand molecules via four S donors in a strictly planar MS 4 array, with an S-Pd-S angle of 92.7(1) °. The Pd-S distances [2.322 (2) and 2.327 (2)/kl are comparable to the values found in other square-planar Pd compounds (Berta, Spofford, Boldrini & Amma, 1970). The Pd-S-C angles [109-2(2) and 110.4(2)°1 and the dihedral angles between the Pd, S, C plane and the mean plane of the ligands 18.3 and 10.7 (15) ° ] indicate that the S atom is largely sp 3 in character (Spofford & Amma, 1976;Raper & Nowell, 1979).…”

Thiourea coordination complexes of PbIIsalts. II. Octahedral coordination in tetrakis(thiourea)lead(II) picrate

“…Discrete octahedral molecules, without definite evidence of hydrogen bonding, are found in Ni(etu)aClz (Robinson, Holt & Carpenter, 1967; triclinic and monoclinic polymorphs; etu=ethylene-thiourea), in Ni(pz)4Cl2 (Reimann, Mighell & Maurer, 1967) and Ni(pz)aBr2 (Mighell, Reimann & Santoro, 1969) (pz=pyrazole), in Ni(py)4Clz and Co(py)4Cl z (Porai-Koshits, 1954) (py = pyridine) and in Ni(py)4Brz and Co(py)4Brz (Antsishkina & Porai-Koshits, 1958). An ionic structure is found in Pd(tu)4Cl2 with square planar [Pd(tu)4] z+ cations and CI-anions (Berta, Spofford, Boldrini & Amma, 1970).…”

Bis(dithiobiureto)MII, M = Pt, Pd

“…The chelate S-S bite distance is also larger at 3.319 (2)A than is the interligand S-S distance at 3-169 (2) A. The M-S distance is only slightly shorter (0.04 A) than that found in Pd, Pt complexes with thiourea (Berta, Spofford, Boldrini & Amma, 1970;Girling & Amma, 1968). It is interesting to note that even though the ligand is not planar in this complex, the individual The thermal ellipsoids are shown at the 50% probability level.…”