Reference:	"Dello Russo, N. and Khanna, R. K. (1996) 'Laboratory Infrared Spectroscopic Studies of Crystalline Nitriles with Relevance to Outer Planetary Systems', Icarus, 123, pp. 366-395."
DOI:	"https://doi.org/10.1006/icar.1996.0165"
Sample Type:	"Ice"
Composition:	"HCN (1)"
Temperature:	"35K"
OCdb page:	"https://ocdb.smce.nasa.gov/dataset/DelloRusso_1996_Icarus_dataset-7_ice_HCN_1_35K_Crystalline"
Annotations:	"Crystalline hydrogen cyanide (HCN) ice deposited at a temperature between 50 and 100 K onto thallium bromoiodide (KRS-5) and polyethylene (PE) substrates, then annealed at 120 K and cooled down to 35 K, and held at 35 K during spectroscopic measurements.
The real (n) and imaginary (k) parts of the complex index of refraction were determined using optical measurements done at a temperature of 35 K and a pressure in the range of ~10⁻⁷ Torr, by infrared transmission spectroscopy from 270 to 120 cm⁻¹ with a resolution of 1 cm⁻¹ in the mid-infrared region and 4 cm⁻¹ in the far-infrared region.
More information can be found in the publication and on the OCdb contributor's page."

"Wavenumber"	"n₁"	 	"Wavenumber"	"k₁"	 
cm⁻¹		 	cm⁻¹		 
120	1.808	 	120	0.134	 
130	1.825	 	130	0.167	 
140	1.917	 	140	0.223	 
150	2.018	 	150	0.332	 
160	2.187	 	160	0.616	 
161	2.205	 	161	0.675	 
162	2.218	 	162	0.743	 
163	2.221	 	163	0.819	 
164	2.215	 	164	0.901	 
165	2.199	 	165	0.99	 
166	2.171	 	166	1.08	 
167	2.128	 	167	1.18	 
168	2.064	 	168	1.29	 
169	1.969	 	169	1.4	 
170	1.837	 	170	1.5	 
171	1.673	 	171	1.56	 
172	1.495	 	172	1.58	 
173	1.324	 	173	1.55	 
174	1.166	 	174	1.49	 
175	1.031	 	175	1.39	 
176	0.93	 	176	1.27	 
177	0.869	 	177	1.15	 
178	0.842	 	178	1.03	 
179	0.837	 	179	0.93	 
180	0.843	 	180	0.848	 
190	1.026	 	190	0.471	 
200	1.09	 	200	0.385	 
210	1.116	 	210	0.345	 
220	1.102	 	220	0.301	 
230	1.086	 	230	0.243	 
240	1.069	 	240	0.196	 
250	1.062	 	250	0.087	 
260	1.144	 	260	0.0324	 
270	1.191	 	270	0.0159