. Author manuscript; available in PMC: 2015 Jun 30.

Published in final edited form as: J Am Chem Soc. 2002 Sep 25;124(38):11417–11428. doi: 10.1021/ja012555f

Table 4.

Proton Chemical Shift Assignments of the Et,Pr Backbone of 2 as Derived through Proton Longitudinal Relaxation Rates at 303 K (500 MHz)

atom label	chemical shift (ppm)	distance from Fe (Å)^a	distance from Fe (Å)^b	T₁ (msec)
H^a	22.92	3.01	2.79	2.338
H^b	−10.61	3.54	3.42	6.266
H^c	19.78	3.19	3.19	3.324
H^d	26.51	3.14	3.09	3.053
H^e	−22.05	3.12	3.08	2.875
H^f	5.65	3.22	3.15	3.480
H^g	−9.72	3.89	3.97	9.917
H^h	5.32	4.10	4.18	15.243
Hⁱ	−11.40	3.82	3.72	10.900
H^j	−31.81	3.09	2.85	2.741

Calculated from T₁ values.

Calculated from crystal structure.