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Stereoisomers of Pt(PL)2Cl2 derivatives – structural aspects

  • Milan Melník EMAIL logo and Peter Mikuš
Published/Copyright: September 28, 2019

Abstract

The coordination complexes of Pt(PL)2Cl2 type (PL = monodentate P-donor ligands) cover almost 260 examples as shown by a recent survey covering the crystallographic and structural data. About 20% of these complexes exist as isomers and are summarized in this review. Included are distortion (58.5%), cis-, trans- (37.8%) and mixed isomerism (cis-, trans- and distortion) (3.7%). Distortion isomers, differing by degree of distortion in Pt-L and L-Pt-L angles, are the most common. For these derivatives the most common cis- arranged with 31 examples and 22 examples with trans- arranged. The complexes with cis-configuration are more distorted than their trans-partners, with the comprehensive values of Pt-L bond distances: 2.246 Å (P) and 2.350 Å (Cl). Such values in the complexes with trans-configurations are 2.323 Å (P) and 2.308 Å (Cl), respectively. These are discussed with attention to any trans-influence.

Nomenclature

C21H21N2P

1,3,5-triphenyl-1,3,5-triazaphosphorinane

m

monoclinic

or

orthorhombic

P(But)2Pri

di-(tert-butyl)isopropyl phosphine

P(C15H10N3)Ph2

4-diphenylphosphino-2,2′:6′,2-terpyridine

P(C6H4F13-4)

(pentamethylcyclopentadienyl)-4-(perfluoro-n-hexyl)phosphine

P(C7H16PO3)Ph2

(3-diethylphosphanatopropyl)diphenylphosphine

P(ClC=CHF)Ph2

(1-chloro-2-fluorovinyl)diphenylphosphine

P(dfop)2Ph

di(2,6-difluorophenol)phenylphosphinate

P(dfp)3

tri(2,6-difluorophenyl)phosphite

P(H)(η2-C8H14)

9-phosphabicyclo[4.2.1]nonane

P(Me)Ph2

diphenylmethylphosphine

P(η2-C10H16O3)(C6H7N)

4-methyl-2-(1,3,6,7-tetramethyl-2,4,6-trioxa-8-phosphatricyclo [3.3.1.13,7]decan-3-yl)pyridine

P(η2-C11H11Br)(Ph)

2-bromo-4,4-dimethyl-1-phenyl-1,4-dihydrophosphinoline

P(η2-C31H38N2)Ph

2,2,7,7,12,12,17,17-octamethyl-24-phenyl- 26-thia-25,27-diaza-24-phosphahexacyclo [16.5.1.13,8.18,11.113,16.019,23]heptacosa-1(23)3,5,8,10,13,15,18-octaene

P(η2-C5H10)But

1-tert-butyl-1-phosphinate

P(η2-C7H14)Ph

3-tert-butyl-1-phenylphosphenate

P(η2-O2C20H12)(NC11H13O2)

methyl (R)-2-{N,N-methyl-[(R)-(dinaphtho [2,1-d:1,2-f][1,3,2]dioxaphosphepin-2-yl)]amino}-3-phenylpropionate

P(η3-C18H14NO)

4-methoxy-1-aza-8-phosphapentacyclo [6.6.6.02,7.09,14.015,20] icosa-2,4,6,9,11,13,15,17, 19-nonane

P{η2-C31H38N2S)(Ph)

(2,2,7,7,12,12,17,17-octamethyl-24-phenyl- 26-thia-25,27-diaza-24-phosphahexacyclo[16.5.1.13,6.18,11.113,16.019,23]heptacora-1(23),3,5,8,10,13,15,18-octane)

Pcy3

tricyclohexylphosphine

PEt3

triethylphosphine

PhobP(CH2OH)

hydroxymethyl-9-phosphabicyclo[3.31]nonane

PhobPBu

n-butyl-9-phosphabicyclo [4.2.1]nonane

PMe3

trimethylphosphine

PPh3

triphenylphosphine

tg

tetragonal

tr

triclinic

Acknowledgments

This work was supported by Ministry of Education Slovak Republic, by the projects http://dx.doi.org/10.13039/501100003194, VEGA 1/0463/18 and APVV-15-0585.

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Received: 2019-04-04
Accepted: 2019-07-17
Published Online: 2019-09-28
Published in Print: 2019-12-18

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