Crystal Structure of 2-[(1E)-2-(4-Fluorophenyl)diazenyl]-1H-imidazole

Round 1

Reviewer 1 Report

 

This paper describes the crystal structure of 2-[(1E)-2-(4-fluorophenyl)diazinyl]-1H-imidazole at 183 K. This is a carefully done study and the findings are interesting. In addition, this compound is expected of the possibility to undergo a crystal phase transition at low temperatures associated with the ordering of imidazole protons that are disordered at 183 K. Thus, this paper is worth publishing in Molbank with minor revisions.

Additional Comment

 

Page 2, line 64 and 65: [-101] --> [01]

 

Author Response

Dear Madame or Sir,

Re: Molbank-2170604, Crystal structure of 2-[(1E)-2-(4-Fluorophenyl)diazenyl]-1H-imidazole

please see attached document regarding our changes.

Kind regards,

Sven Nerdinger

Author Response File: Author Response.pdf

Reviewer 2 Report

This report describes the results of single crystal X-ray structure analysis of 4'-fluoroarylazoimidazole. In the crystal, the molecule has a one-dimensional chain structure and a layered hierarchical structure.
Understanding the structure in single crystals is valuable in the sense that it provides direct information on the important intermolecular interactions, and this study is expected to make a certain contribution to materials science. Therefore, it is considered that the results of this study are worthy of publication in this journal, but the following points should be deeply considered so that readers in a wide range of fields can easily understand the discussion points.

1. One of the unique feature of this molecule is the fluorine atom on the aryl group. The possibility that fluorine has an intermolecular interaction with imidazolium carbon should also be discussed. This is because intermolecular interactions via fluorine atoms in the crystal structures of organofluorine compounds are sometimes discussed.

2. In the Conclusion, the solubility of this molecule is discussed. Is this an interpretation that the stability of the crystal based on intermolecular interactions explains the insolubility of the substance? A careful and clear explanation of this is needed. The discussion on the solubility of imidazole when protonated is mentioned, but this is nonsense because such an argument would not be possible without investigation and discussion of the intermolecular interactions of imidazolium salts. Such a discussion should be based on these comparisons.

 

3. The arguments in the Introduction and Conclusion should be a proper correspondence between the problem statement and the conclusion. In this paper, the Introduction discusses reactivity and the Conclusion discusses solubility.

Author Response

Dear Madame or Sir,

Re: Molbank-2170604, Crystal structure of 2-[(1E)-2-(4-Fluorophenyl)diazenyl]-1H-imidazole

please see attached document regarding our changes.

Kind regards,

Sven Nerdinger

Author Response File: Author Response.pdf