Calculated NICS values (ppm).

	NICSzz		NICSπzz		FiPC
Distance (Å)	0	1	0	1	—
1: (CH)6	−14.48	−29.25	−35.78	−29.07	−9.07
2: (HBNH)3	11.98	−5.17	−7.89	−5.88	−2.34
3: [(MesN)(BCl)(BPMe3)]2	−3.36	−12.32	—	—	−4.03
3′: [(HN)(BH)(BPH3)]2	−3.75	−15.18	−19.73	−16.54	−3.85
4′: [(HN)2(BH)4]2–	−5.49	−15.42	−20.73	−17.02	—