Ligand isomerism and stacking in square planar platinum(II) complexes

Coyer, M. J.; Croft, Mark; Chen, J.; Herber, R. H.

doi:10.1021/ic00036a006

Cited by 20 publications

(30 citation statements)

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“…Specifically, a bis(thiocyanato)Pt II complex, [Pt(SCN) 2 (4,4′‐H 2 dcbpy)] ( 21 ) that bears the bipyridine ligand with two proton‐donating carboxy groups at the 4,4′‐position was synthesized. Since the ambidentate ligand SCN – can coordinate to Pt II ion at the S and N terminals, the coordination environment of the Pt II center could be changed by linkage isomerization from S 2 N 2 (abbreviated as 21 ‐SS in Figure 24, a) to N 4 ( 21 ‐NN) by means of S 1 N 3 coordination ( 21 ‐SN) 81,82. Compound 21 ‐SS is obtained selectively by the ligand‐substitution reaction of the dichloride Pt II precursor, [PtCl 2 (4,4′‐H 2 dcbpy)], at low temperatures with potassium thiocyanate, in addition to the nonsubstituted bpy complex analogue 82.…”

Section: Direct Perturbation To the Ligand‐field Splitting Of The mentioning

confidence: 99%

Vapochromic Platinum(II) Complexes: Crystal Engineering toward Intelligent Sensing Devices

2014

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Vapochromic materials that show reversible color change driven by vapor adsorption/desorption have drawn significant attention because of their potential applications in chemical sensors and chemical‐switching modules. Among the vapochromic coordination complexes reported so far, a series of square‐planar PtII complexes has been studied and represents one of the most promising systems for practical chemical sensors. For such systems, the color of the complexes strongly depends not only on the ligand‐field splitting, but also on the intermolecular distance between the PtII ions. This microreview presents recent results of vapochromic complexes centered on one‐dimensionally stacked PtII systems from the viewpoint of the origin of their vapochromic behavior. The design of vapochromic materials has been facilitated because several useful chromophores, including metallophilic interaction between PtII ions, have been developed. However, it is still challenging to realize a specifically sensitive and selective response to targeted vapors. This review focuses on strategies to achieve assembled PtII complexes with selective vapochromic responses.

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Section: Direct Perturbation To the Ligand‐field Splitting Of The mentioning

confidence: 99%

Vapochromic Platinum(II) Complexes: Crystal Engineering toward Intelligent Sensing Devices

2014

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confidence: 97%

(4,4'-Dimethyl-2,2'-bipyridyl-N,N')bis(isocyanato)platinum(II)

Coyer¹,

Herber²,

Cohen³

1991

Acta Crystallogr C

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“…This distance is comparable to that reported in a number of non-conducting platinum pseudohalide complexes in which the metal atom is exclusively in the divalent state (Williams, 1983). The infrared, ~H and ~3C NMR, and UV-VIS spectroscopies of the title compound are not otherwise remarkable, and will be published elsewhere (Coyer & Herber, 1991). (Hathaway, 1984), as fluxional copper(II) stereochemistries (Procter, Hathaway, Billing, Dudley & Nicholls, 1969;Harrison, Hathaway & Kennedy, 1979;Fitzgerald, Murphy, Tyagi, Walsh, Walsh & Hathaway, 1981;Simmons, Hathaway, Amornjarusiri, Santar-Siero & Clearfield, 1987).…”

Section: Bis(isocyanato)platinum(ii)mentioning

confidence: 96%