Seeking safe, water-soluble chemicals for an IR spectroscopy experiment
Disclaimer: I assume you refer to compounds which may be «soluble in water», not necesarily to constrained to «recording the spectra in aqueous solution» for limitations of IR transmission spectroscopy which are a bit lesser present with IR ATR spectroscopy, and basically not present for Raman (M. Farooq's answer). I assume you mention water soluble because you want to clean your setup after recording the data simply with water.  Note: often, the recordings mentioned below are literally about thin films of theses substances, i.e., an optical pathlength across the sample much less than $\pu{1 mm}$.
Complementary to NIST webbook chemistry offering a search by the vibrational energy here is the Japanese Spectral Database for Organic Compounds, SDBS. (Querries may be either in Japanese, or English.)  It equally offers a «reverse search» starting with spectral information you already have in hand:

(credit)
I'm not aware about the spectral width of the sensors you mention, if these record e.g., at $\pu{(1200 \pm 10) cm^{-1}}$, or say $\pu{(1200 \pm 50) cm^{-1}}$.  Obviously, the larger the allowance, the list of compounds indexed in the database matching this criterion will increase. In a query with the former threshold, browsing across the list of hits however were entries like formic acid (attention, potential danger because it is corrosive), or acetone  (attention, potential danger because it is flammable).
By back-and-forth between the listing (to rule out compounds not water soluble, requiring some intuition / knowledge) and the spectra, you may identify if there are other bands of (dis)interest to you, too, e.g.

(example acetone, loc. cit.)