Stereochemistry of platinum coordination compounds

Melnı́k, Milan; Holloway, Clive Ε.

doi:10.1016/j.ccr.2006.02.020

Cited by 53 publications

(32 citation statements)

References 198 publications

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“…Analysis of the crystallographic and structural data of almost two thousand monomeric platinum coordination compounds showed [128] that about 10% of these complexes exist as isomers: distortion (65%), cis-trans (30%), mixed isomers (cis-trans plus distortion), and ligand isomerism. Despite the importance of cis-trans geometry in the chemistry of Pt(II) compared to other transition metal systems, within platinum chemistry, distortion isomerism is far more common.…”

Section: Discussionmentioning

confidence: 99%

Crystallographic and structural characterization of heterometalic platinum complexes Part X. Heteropolynuclear pt complexes

2015

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This review covers heteropolynuclear platinum complexes. There are over sixty examples with heterometal atoms as partners including non-transition metals, K, Cs, Mg, Ca, Sr, Tl, Sn, Pb, Zn, Cd, and transition metals: Cu, Ag, Fe, Co, Ni, Rh and Pd. In addition, there are examples for the lanthanides, Eu and Yb. The most common are Ag (x16) and K (x14). The predominant geometries for Pt(II) is square-planar and for Pt(IV) is octahedral. The overall structures are complex. In spite of the wide variety of heterometal atoms partners of platinum, there is "real" Pt-M bonds only with silver, ranging from 2.678 to 2.943(I) Å (ave 2.855 Å). The mean Pt-Pt bond distance is 2.869 Å.

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Section: Discussionmentioning

confidence: 99%

Crystallographic and structural characterization of heterometalic platinum complexes Part X. Heteropolynuclear pt complexes

2015

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“…Despite the importance of cis -trans geometry in the chemistry of Pt(II) compared to other transition metal systems, within platinum distortion isomerism is far more common. In the series of monomeric Pt coordination compounds where found the following types of isomerism: distortion, cistrans-, mixed and ligand, from which the distortion is by far prevails (65%) [5].…”

Section: Discussionmentioning

confidence: 99%

“…Around each Pt(IV) atom there [78] (Table 3). contd….. (3) 21.664 (6) 19.487 (7) 91.01(1) (15) 19.954 (19) 19.832 (30) 103.96 (10) 104.24 (11) 91.52 (9) Cl 83.6 (7,8) Cl,Cl 85.0 (7,5) Footnotes: a). Where more than one chemically equivalent distance or angle is present, the mean value is tabulated.…”

Section: Bi - Tri-and Tetranuclear Complexesmentioning

confidence: 99%

“…There are also three tetranuclear derivatives, which contain two crystallographically independent molecules, as well (Table 3C). In each molecule of dark gray Pt 4 ( -CO) 5 (PEt 3 ) 4 [87], the four Pt(0) atoms are located at the apices of a deformed tetrahedron (butterfly), in which five edges have PtPt bond lengths in range 2.69-2.766 (av. 2.731 Å) and 2.704-2.745 (av.…”

Section: Mecmentioning

confidence: 99%

“…Recently [5] we analyzed and classified over two hundred isomeric examples of platinum monomeric coordination complexes about sixty five percent of which are distortion isomers, about 30% cis -trans and the remainder mixed isomers (cis-trans plus distortion) and ligand isomerism. Distortion isomers, differing only by degree of distortion in Pt-L distances and L-Pt-L angles, are by far the most numerous.…”

Section: Introductionsmentioning

confidence: 99%

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Stereochemistry of Platinum Organometallics

Melnı́k¹,

Garaj²,

Holloway³

2007

TOICJ

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Abstract:The organometallic chemistry of platinum covers a huge field, as shown by a recent survey covering the crystallographic and structural data of almost one thousand organometallic derivatives. About nine percent of those derivatives exist as isomers and are summarized in this review and include distortion (90 %), cis -trans (6%) and ligand isomerism (4%). These are discussed in terms of the coordination about the platinum atom, and correlations are drawn between donor atom, bond length and interbond angles, with attention to any trans -effect.Distortion isomers, differing only by degree of distortion in Pt-L bond lengths and L-Pt -L bond angles, are the most numerous. They are also spread over a wider range of oxidation states of platinum, (zero, +1, +2, +4, mixed valence +1 plus +2 and +2 plus +4), compared to cis-trans and ligand isomerism in which only +2 is found.

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Aza[6]helicene Platinum Complexes: Chirality Control of cis–trans Isomerism

et al. 2014

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It was serendipitously observed that cis‐[PtCl2(NCEt)PPh3] reacted differently with either racemic or enantiopure 4‐aza[6]helicene, giving respectively cis (racemic) and trans (enantiopure) [PtIICl2(4‐aza[6]helicene)PPh3] complexes. This unexpected reactivity is explained through a dynamic process (crystallization‐induced diastereoselective transformation) and enables a new aspect of reactivity in chiral transition‐metal complexes to be addressed.

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Stereochemistry of platinum coordination compounds

Cited by 53 publications

References 198 publications

Crystallographic and structural characterization of heterometalic platinum complexes Part X. Heteropolynuclear pt complexes

Crystallographic and structural characterization of heterometalic platinum complexes Part X. Heteropolynuclear pt complexes

Stereochemistry of Platinum Organometallics

Aza[6]helicene Platinum Complexes: Chirality Control of cis–trans Isomerism

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