Infrared Spectroscopy Studies of Platinum Salts Containing Tetracyanoplatinate(II). Evidence for Strong Hydrogen-Bonding Interactions in "Vapochromic" Environmental Sensor Materials

Christopher L. Exstrom; Marie K. Pomije; Kent R. Mann

doi:10.1021/cm970788t

Infrared Spectroscopy Studies of Platinum Salts Containing Tetracyanoplatinate(II). Evidence for Strong Hydrogen-Bonding Interactions in "Vapochromic" Environmental Sensor Materials

Christopher L. Exstrom, Marie K. Pomije, Kent R. Mann

Research output: Contribution to journal › Article › peer-review

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Abstract

We have studied the sorption of volatile organic compounds (VOCs) by [(n-C₄H₉)₄N]₂[Pt-(CN)₄] and [Pt(p-CN-C₆H₄-C₁₀H₂₁) ₄][Pt(CN)₄] with FTIR spectroscopy. The data indicate a strong correlation exists between ν(CN) stretching frequencies in the [Pt(CN)₄]^2- ions and the hydrogen bonding ability of the VOC (as expressed by Abraham's a values). The ν(CN) stretching frequencies for each salt with sorbed VOC indicate that similar VOC-material interactions are present in both. The correlation of the IR data for [Pt(p-CN-C₆H₄-C₁₀H₂₁) ₄]-[Pt(CN)₄] with the previously reported NIR data was only successful for solvents with α > 0.15. These results suggest that vapochromic shifts in the electronic transitions of [Pt(p-CN-C₆H₄-C₁₀H₂₁) ₄][Pt(CN)₄] result not only from H-bonds between the VOC and [Pt(CN)₄]^2- but also from one or more additional mechanisms that are most important for solvents with low H-bond donor character (α < 0.15).

Original language	English (US)
Pages (from-to)	942-945
Number of pages	4
Journal	Chemistry of Materials
Volume	10
Issue number	3
DOIs	https://doi.org/10.1021/cm970788t
State	Published - 1998
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Materials Chemistry

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Infrared Spectroscopy Studies of Platinum Salts Containing Tetracyanoplatinate(II). Evidence for Strong Hydrogen-Bonding Interactions in "Vapochromic" Environmental Sensor Materials. / Exstrom, Christopher L.; Pomije, Marie K.; Mann, Kent R.
In: Chemistry of Materials, Vol. 10, No. 3, 1998, p. 942-945.

Research output: Contribution to journal › Article › peer-review

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abstract = "We have studied the sorption of volatile organic compounds (VOCs) by [(n-C4H9)4N]2[Pt-(CN)4] and [Pt(p-CN-C6H4-C10H21) 4][Pt(CN)4] with FTIR spectroscopy. The data indicate a strong correlation exists between ν(CN) stretching frequencies in the [Pt(CN)4]2- ions and the hydrogen bonding ability of the VOC (as expressed by Abraham's a values). The ν(CN) stretching frequencies for each salt with sorbed VOC indicate that similar VOC-material interactions are present in both. The correlation of the IR data for [Pt(p-CN-C6H4-C10H21) 4]-[Pt(CN)4] with the previously reported NIR data was only successful for solvents with α > 0.15. These results suggest that vapochromic shifts in the electronic transitions of [Pt(p-CN-C6H4-C10H21) 4][Pt(CN)4] result not only from H-bonds between the VOC and [Pt(CN)4]2- but also from one or more additional mechanisms that are most important for solvents with low H-bond donor character (α < 0.15).",

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AB - We have studied the sorption of volatile organic compounds (VOCs) by [(n-C4H9)4N]2[Pt-(CN)4] and [Pt(p-CN-C6H4-C10H21) 4][Pt(CN)4] with FTIR spectroscopy. The data indicate a strong correlation exists between ν(CN) stretching frequencies in the [Pt(CN)4]2- ions and the hydrogen bonding ability of the VOC (as expressed by Abraham's a values). The ν(CN) stretching frequencies for each salt with sorbed VOC indicate that similar VOC-material interactions are present in both. The correlation of the IR data for [Pt(p-CN-C6H4-C10H21) 4]-[Pt(CN)4] with the previously reported NIR data was only successful for solvents with α > 0.15. These results suggest that vapochromic shifts in the electronic transitions of [Pt(p-CN-C6H4-C10H21) 4][Pt(CN)4] result not only from H-bonds between the VOC and [Pt(CN)4]2- but also from one or more additional mechanisms that are most important for solvents with low H-bond donor character (α < 0.15).

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Infrared Spectroscopy Studies of Platinum Salts Containing Tetracyanoplatinate(II). Evidence for Strong Hydrogen-Bonding Interactions in "Vapochromic" Environmental Sensor Materials

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