Potassium Tetrachloroplatinate(II): (Potassium Chloroplatinite)

Keller, R. N.; Moeller, Therald; Quagliano, J. V.

doi:10.1002/9780470132333.ch79

Cited by 30 publications

(4 citation statements)

References 2 publications

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“…Potassium tetrachloroplatinate (K 2 PtCl 4 ) was prepared by a series of literature procedures: platinum metal was dissolved in aqua regia to yield hexachloroplatinic acid (H 2 PtCl 6 ), which was converted to potassium hexachloroplatinate (K 2 PtCl 6 ) by a cation exchange, followed by reduction of K 2 PtCl 6 to K 2 PtCl 4 . [PtM(SAc) 4 (OH 2 )] (M = Co, Ni, Zn) were prepared by a previously reported method .…”

Section: Methodsmentioning

confidence: 99%

Thiocyanate-Ligated Heterobimetallic {PtM} Lantern Complexes Including a Ferromagnetically Coupled 1D Coordination Polymer

et al. 2016

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A series of heterobimetallic lantern complexes with the central unit {PtM(SAc)4(NCS)} have been prepared and thoroughly characterized. The {Na(15C5)}[PtM(SAc)4(NCS)] series, 1 (Co), 2 (Ni), 3 (Zn), are discrete compounds in the solid state, whereas the {Na(12C4)2)}[PtM(SAc)4(NCS)] series, 4 (Co), 5 (Ni), 6 (Zn), and 7 (Mn), are ion-separated species. Compound 7 is the first {PtMn} lantern of any bridging ligand (carboxylate, amide, etc.). Monomeric 1-7 have M(2+), necessitating counter cations that have been prepared as {(15C5)Na}(+) and {(12C4)2Na}(+) variants, none of which form extended structures. In contrast, neutral [PtCr(tba)4(NCS)]∞ 8 forms a coordination polymer of {PtCr}(+) units linked by (NCS)(-) in a zigzag chain. All eight compounds have been thoroughly characterized and analyzed in comparison to a previously reported family of compounds. Crystal structures are presented for compounds 1-6 and 8, and solution magnetic susceptibility measurements are presented for compounds 1, 2, 4, 5, and 7. Further structural analysis of dimerized {PtM} units reinforces the empirical observation that greater charge density along the Pt-M vector leads to more Pt···Pt interactions in the solid state. Four structural classes, one new, of {MPt}···{PtM} units are presented. Solid state magnetic characterization of 8 reveals a ferromagnetic interaction in the {PtCr(NCS)} chain between the Cr centers of J/kB = 1.7(4) K.

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Section: Methodsmentioning

confidence: 99%

Thiocyanate-Ligated Heterobimetallic {PtM} Lantern Complexes Including a Ferromagnetically Coupled 1D Coordination Polymer

et al. 2016

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“…The common starting material for these procedures is K 2 [PtCl 4 ], a water-soluble salt, which can be prepared directly from platinum metal in two steps. 56 As with Peyrone's initial synthesis, several protocols for the synthesis of cisplatin involve the direct action of aqueous ammonia on the tetrachloroplatinate ion. 57,58 This reaction inevitably results in the formation of Magnus' green salt and the trans isomer as undesired byproducts, both of which must be removed by additional purification steps.…”

Section: Synthesis Of Platinum(ii) Complexesmentioning

confidence: 99%

“…Following Peyrone’s initial preparation of cisplatin, several different synthetic routes have been described. The common starting material for these procedures is K 2 [PtCl 4 ], a water-soluble salt, which can be prepared directly from platinum metal in two steps . As with Peyrone’s initial synthesis, several protocols for the synthesis of cisplatin involve the direct action of aqueous ammonia on the tetrachloroplatinate ion. , This reaction inevitably results in the formation of Magnus’ green salt and the trans isomer as undesired byproducts, both of which must be removed by additional purification steps. , Recently, the use of microwave irradiation for the synthesis of cisplatin directly from K 2 PtCl 4 and NH 4 OAc was reported .…”

Section: Synthesis Of Platinum(ii) Complexesmentioning

confidence: 99%

Synthetic Methods for the Preparation of Platinum Anticancer Complexes

2013

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“…Potassium tetrachloroplatinate (K 2 PtCl 4 ) was prepared using a combination of literature preparations: hexachloroplatinic acid (H 2 PtCl 6 ) was prepared from commercially obtained platinum metal and was converted to K 2 PtCl 6 , and K 2 PtCl 4 was synthesized from the prepared K 2 PtCl 6 . The compounds [PtZn(SAc) 4 (OH 2 )], [(py)PtZn(SAc) 4 (py)], [PtZn(SAc) 4 (py)], [PtZn(SAc) 4 (4-NH 2 py)], and [PtZn(SAc) 4 (3-NO 2 py)] were prepared as previously reported.…”

Section: Introductionmentioning

confidence: 99%

Pt–Mg, Pt–Ca, and Pt–Zn Lantern Complexes and Metal-Only Donor–Acceptor Interactions

et al. 2016

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Pt-based heterobimetallic lantern complexes of the form [PtM(SOCR)(L)] have been shown previously to form intermolecular metallophilic interactions and engage in antiferromagnetic coupling between lanterns having M atoms with open shell configurations. In order to understand better the influence of the carboxylate bridge and terminal ligand on the electronic structure, as well as the metal-metal interactions within each lantern unit, a series of diamagnetic lantern complexes, [PtMg(SAc)(OH)] (1), [PtMg(tba)(OH)] (2), [PtCa(tba)(OH)] (3), [PtZn(tba)(OH)] (4), and a mononuclear control (PhP)[Pt(SAc)] (5) have been synthesized. Crystallographic data show close Pt-M contacts enforced by the lantern structure in each dinuclear case. Pt-NMR spectroscopy of 1-4, (PhP)[Pt(SAc)] (5), and several previously reported lanterns revealed a strong chemical shift dependence on the identity of the second metal (M), mild influence by the thiocarboxylate ligand (SOCR; R = CH (thioacetate, SAc), CH (thiobenzoate, tba)), and modest influence from the terminal ligand (L). Fluorescence spectroscopy has provided evidence for a Pt···Zn metallophilic interaction in [PtZn(SAc)(OH)], and computational studies demonstrate significant dative character. In all of 1-4, the short Pt-M distances suggest that metal-only Lewis donor (Pt)-Lewis acceptor (M) interactions could be present. DFT and NBO calculations, however, show that only the Zn examples have appreciable covalent character, whereas the Mg and Ca complexes are much more ionic.

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Potassium Tetrachloroplatinate(II): (Potassium Chloroplatinite)

Cited by 30 publications

References 2 publications

Thiocyanate-Ligated Heterobimetallic {PtM} Lantern Complexes Including a Ferromagnetically Coupled 1D Coordination Polymer

Thiocyanate-Ligated Heterobimetallic {PtM} Lantern Complexes Including a Ferromagnetically Coupled 1D Coordination Polymer

Synthetic Methods for the Preparation of Platinum Anticancer Complexes

Pt–Mg, Pt–Ca, and Pt–Zn Lantern Complexes and Metal-Only Donor–Acceptor Interactions

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