Dear Shailendra,

You should be able to probe Au-Au and Au-P bond by using X-ray photoelectron spectroscopy.

Best,

Pitambar

X-Ray photoelectron spectroscopy is ideal for solving the problem. For both elements, it is Au and also phosphorus. You will not find the data in the tables, you must search the primary sources. Good luck.

Dear Shailendra K. Sharma many thanks for your interesting technical question. Compounds comprising Au-Au bonding interactions are of significant theoretical and practical interest. So-called relativistic effects are particularly prominent in gold chemistry, and especially binuclear gold(I) compounds have been found to exhibit Au-Au "aurophilic" bonding interactions. As described in the useful research article cited below, good methods to study such Au-Au bonds are e.g. Raman and UV-vis spectroscopy. Please have a look at the paper entitled

Au–Au chemical bonding induced by UV irradiation of dinuclear gold(i) complexes: a computational study with experimental evidence

Article Au–Au chemical bonding induced by UV irradiation of dinuclea...

This article has been posted as public full text on RG and can be freely downloaded as pdf file.

Also please see:

Real-Time Observation of Tight Au–Au Bond Formation and Relevant Coherent Motion upon Photoexcitation of [Au(CN)2–] Oligomers

Article Real-Time Observation of Tight Au-Au Bond Formation and Rele...

Other useful articles related to this topic can be easily found and accessed using the "Search" function of RG. For example, search for the term "Au-Au bond":

https://www.researchgate.net/search.Search.html?type=publication&query=Au-Au%20bond

This will provide you with a long list of relevant papers in this area.

Good luck with your research! 👍

Dear Shailendra K. Sharma ,

another technique to investigate interatomic bondings is EXAFS, a finestructure in the x-ray attenuation coefficient above K and L absorption edges, which, among other informations, bears atomic distances and via the so-called backscatter amplitude, informations about the atomic numbers of the neighbouring atom. In your case EXAFS analysis of the fine structure taken at the Au K- or L-edges will give you the bond distances to the next Au atoms and the next P atoms. Due to the fact that the atomic numbers of Au and P are very different you can easily destinguish their contributions to the EXAFS.

For a short introduction to EXAFS please have a look for example at:

Article XAFS Spectroscopy: Fundamental Principles and Data Analysis