Spiro-(Fluorene-9,4′-Imidazolidine)-2′,5′-Dithione

Dimitar Stoitsov; Marin Marinov; Virdginia-Isabelle Markova; Petya Marinova; Plamen Penchev; Neyko Stoyanov

doi:10.20944/preprints202611.0893.v1

Submitted:

06 November 2026

Posted:

09 November 2026

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Spiro-(Fluorene-9,4′-Imidazolidine)-2′,5′-Dithione

Dimitar Stoitsov,Marin Marinov,Virdginia-Isabelle Markova,Petya Marinova^*,Plamen Penchev,Neyko Stoyanov

Submitted:

06 November 2026

Posted:

09 November 2026

You are already at the latest version

Abstract

The structure of spiro-(fluorene-9,4’-imidazolidine)-2’,5’-dithione was verified by 1D (¹H, ¹³C, DEPT 135) and 2D NMR (¹H-¹H COSY, HMQC and HMBC) spectroscopy. Additionally, the completely assigned NMR data was supported by Raman band assignments. HOSE predictions were incorporated by using the open-access NMRShiftDB database for verification of the assigned ¹³C NMR chemical shifts.

Keywords:

spiro-(fluorene-9

;

4’-imidazolidine)-2’

;

5’-dithione

;

spirohydantoins

;

assignment

;

NMR

Subject:

Chemistry and Materials Science - Organic Chemistry

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