Gold(I) complexes with tertiary phosphine sulfide ligands

Saeed Ahmad; Anvarhusein A. Isab; Herman P. Perzanowski; M. Sakhawat Hussain; M. Naseem Akhtar

doi:10.1023/A:1013920208168

Gold(I) complexes with tertiary phosphine sulfide ligands

Saeed Ahmad, Anvarhusein A. Isab^*, Herman P. Perzanowski, M. Sakhawat Hussain, M. Naseem Akhtar

^*Corresponding author for this work

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

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Abstract

Phosphine sulfides and their gold(I) complexes with general formula R₃P=S-Au-X (X = Cl^-, Br^- or CN^-) were prepared and characterized by elemental analyses, i.r. and ³¹P-n.m.r. spectroscopy. A decrease in the i.r. frequency of the P=S bond in the ligands upon complexation, is indicative of 'S' coordination to gold(I). The ³¹P-n.m.r. spectra revealed that electronegativity of the substituents and angles between them were the two most important factors influencing the ³¹P-n.m.r. chemical shifts. The phosphorus resonance was observed to be more downfield in alkyl substituted phosphine sulfides as compared to the aryl substituted phosphine sulfides. Ligand scrambling in the Cy₃P=S-Au-CN complex in solution, to form [(Cy₃P=S)₂Au]⁺ and [Au(CN)₂]^-, was investigated by ¹³C and ¹⁵N-n.m.r. spectroscopy. Equilibrium constants (K_eq) for scrambling of the Cy₃P=S-Au-CN complex and for its analogue, Cy₃P=Se-Au-CN were measured by integrating the ¹³C-n.m.r. at 297 K and were found to be 0.147 and 1.81 respectively.

Original language	English
Pages (from-to)	177-183
Number of pages	7
Journal	Transition Metal Chemistry
Volume	27
Issue number	2
DOIs	https://doi.org/10.1023/A:1013920208168
State	Published - Mar 2002

Bibliographical note

Funding Information:
This work was supported by the KFUPM Research Committee under project No. CY/NMR-Studies/214.

ASJC Scopus subject areas

Inorganic Chemistry
Metals and Alloys
Materials Chemistry

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@article{6350f151a54b49348f80e2c43b2a19c4,

title = "Gold(I) complexes with tertiary phosphine sulfide ligands",

abstract = "Phosphine sulfides and their gold(I) complexes with general formula R3P=S-Au-X (X = Cl-, Br- or CN-) were prepared and characterized by elemental analyses, i.r. and 31P-n.m.r. spectroscopy. A decrease in the i.r. frequency of the P=S bond in the ligands upon complexation, is indicative of 'S' coordination to gold(I). The 31P-n.m.r. spectra revealed that electronegativity of the substituents and angles between them were the two most important factors influencing the 31P-n.m.r. chemical shifts. The phosphorus resonance was observed to be more downfield in alkyl substituted phosphine sulfides as compared to the aryl substituted phosphine sulfides. Ligand scrambling in the Cy3P=S-Au-CN complex in solution, to form [(Cy3P=S)2Au]+ and [Au(CN)2]-, was investigated by 13C and 15N-n.m.r. spectroscopy. Equilibrium constants (Keq) for scrambling of the Cy3P=S-Au-CN complex and for its analogue, Cy3P=Se-Au-CN were measured by integrating the 13C-n.m.r. at 297 K and were found to be 0.147 and 1.81 respectively.",

author = "Saeed Ahmad and Isab, \{Anvarhusein A.\} and Perzanowski, \{Herman P.\} and Hussain, \{M. Sakhawat\} and Akhtar, \{M. Naseem\}",

note = "Funding Information: This work was supported by the KFUPM Research Committee under project No. CY/NMR-Studies/214.",

year = "2002",

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doi = "10.1023/A:1013920208168",

language = "English",

volume = "27",

pages = "177--183",

journal = "Transition Metal Chemistry",

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T1 - Gold(I) complexes with tertiary phosphine sulfide ligands

AU - Ahmad, Saeed

AU - Isab, Anvarhusein A.

AU - Perzanowski, Herman P.

AU - Hussain, M. Sakhawat

AU - Akhtar, M. Naseem

N1 - Funding Information: This work was supported by the KFUPM Research Committee under project No. CY/NMR-Studies/214.

PY - 2002/3

Y1 - 2002/3

N2 - Phosphine sulfides and their gold(I) complexes with general formula R3P=S-Au-X (X = Cl-, Br- or CN-) were prepared and characterized by elemental analyses, i.r. and 31P-n.m.r. spectroscopy. A decrease in the i.r. frequency of the P=S bond in the ligands upon complexation, is indicative of 'S' coordination to gold(I). The 31P-n.m.r. spectra revealed that electronegativity of the substituents and angles between them were the two most important factors influencing the 31P-n.m.r. chemical shifts. The phosphorus resonance was observed to be more downfield in alkyl substituted phosphine sulfides as compared to the aryl substituted phosphine sulfides. Ligand scrambling in the Cy3P=S-Au-CN complex in solution, to form [(Cy3P=S)2Au]+ and [Au(CN)2]-, was investigated by 13C and 15N-n.m.r. spectroscopy. Equilibrium constants (Keq) for scrambling of the Cy3P=S-Au-CN complex and for its analogue, Cy3P=Se-Au-CN were measured by integrating the 13C-n.m.r. at 297 K and were found to be 0.147 and 1.81 respectively.

AB - Phosphine sulfides and their gold(I) complexes with general formula R3P=S-Au-X (X = Cl-, Br- or CN-) were prepared and characterized by elemental analyses, i.r. and 31P-n.m.r. spectroscopy. A decrease in the i.r. frequency of the P=S bond in the ligands upon complexation, is indicative of 'S' coordination to gold(I). The 31P-n.m.r. spectra revealed that electronegativity of the substituents and angles between them were the two most important factors influencing the 31P-n.m.r. chemical shifts. The phosphorus resonance was observed to be more downfield in alkyl substituted phosphine sulfides as compared to the aryl substituted phosphine sulfides. Ligand scrambling in the Cy3P=S-Au-CN complex in solution, to form [(Cy3P=S)2Au]+ and [Au(CN)2]-, was investigated by 13C and 15N-n.m.r. spectroscopy. Equilibrium constants (Keq) for scrambling of the Cy3P=S-Au-CN complex and for its analogue, Cy3P=Se-Au-CN were measured by integrating the 13C-n.m.r. at 297 K and were found to be 0.147 and 1.81 respectively.

UR - https://www.scopus.com/pages/publications/0036498833

U2 - 10.1023/A:1013920208168

DO - 10.1023/A:1013920208168

M3 - Article

AN - SCOPUS:0036498833

SN - 0340-4285

VL - 27

SP - 177

EP - 183

JO - Transition Metal Chemistry

JF - Transition Metal Chemistry

IS - 2

ER -

Gold(I) complexes with tertiary phosphine sulfide ligands

Abstract

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