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. 2022 Aug 12;27(16):5156. doi: 10.3390/molecules27165156

Table 1.

The chemical shifts and coupling constants characteristic of TPP^⊕ moiety in the synthesized triphenylphosphonium analogs of BN (7 and 9).

	¹³C NMR (CDCl₃, TMS, δ (ppm)/J_C-P (Hz)
		TPP^⊕
	CH₂P^⊕	C^ipso	C^meta	C^ortho	C^para
7a	19.8/52.3	118.1/85.7	130.5/12.1	133.8/9.8	135.0/3.0
7b	22.2/50.6	118.3/84.9	130.4/12.1	133.8/9.9	134.9/3.0
7c	22.7/49.4	118.4/85.0	130.5/12.1	133.7/9.8	134.9/3.0
7d	19.4/51.8	118.3/86.3	130.4/12.6	133.8/10.4	134.9/0.5
7e	22.1/49.3	118.3/88.1	130.4/12.6	133.7/10.4	134.9/0.5
7f	22.7/50.1	118.4/85.8	130.4/12.4	133.7/9.9	134.9/3.0
9a	19.7/51.8	118.1/86.3	130.5/12.8	133.8/9.2	135.1/0.5
9b	22.2/50.0	118.2/88.8	130.4/12.9	133.7/9.9	135.0/3.0
9c	22.8/49.3	118.4/85.0	130.5/12.2	133.8/9.8	135.0/3.0
δ, ppm	19.4–22.8	118.1–118.4	130.4–130.5	133.7–133.8	134.9–135.0
J_C-P, Hz	49.3–52.3	84.9–88.1	12.1–12.9	9.2–10.4	0.5–3.0