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Updated: Jun 1, 2026

Synthesis of a Water-soluble Metal–Organic Complex Array
Published on: October 8, 2016
Chlorido(4,4',4''-tri-tert-butyl-2,2':6',2''-terpyridine)-platinum(II) chloride toluene monosolvate
Abstract:
In the title compound, [PtCl(C(27)H(35)N(3))]Cl·C(7)H(8), the Pt(II) atom is coordinated in a pseudo-square-planar fashion by the N atoms of a 4,4',4''-tri-tert-butyl-2,2':6',2''-terpyridine (tbtrpy) ligand and a Cl atom. The Pt-N distance of the N atom on the central pyridine is 1.941 (4) Å, while the peripheral N atoms have Pt-N distances of 2.015 (4) and 2.013 (4) Å. The Pt-Cl bond distance is 2.3070 (10) Å. The cations pack as dimers in a head-to-tail orientation with an inter-molecular Pt⋯Pt distance of 3.2774 (3) Å and Pt⋯N distances of 3.599 (4), 3.791 (4) and 4.115 (4) Å. The solvent mol-ecule is disordered and occupies two positions with a ratio of 0.553 (6):0.447 (6).
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Stereoisomerism
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...