Table 2. Comparative geometrical parameters (Å, °) for similar [Rh(N,O-bid)(CO)(PPh₃)] complexes.

Parameters	(I)a	(II)b	(III)c	(IV)d
Rh1—N11	2.077 (2)	2.069 (2)	2.045 (4)	2.045 (3)
Rh1—O12	2.027 (2)	2.028 (2)	2.044 (3)	2.045 (2)
Rh1—P13	2.2704 (7)	2.2635 (6)	2.275 (1)	2.281 (2)
Rh1—C14	1.812 (3)	1.807 (2)	1.784 (5)	1.804 (3)
C14—O14	1.147 (3)	1.152 (3)	1.142 (7)	1.148 (4)
N11⋯O12	2.885 (3)	2.885 (3)	2.826 (6)	2.841 (3)
N11—Rh1—O12	89.31 (9)	89.54 (8)	87.4 (1)	87.95 (8)
O12—Rh1—P13	85.95 (6)	84.97 (5)	89.7 (1)	89.91 (5)
P13—Rh1—C14	91.57 (9)	91.87 (7)	90.3 (2)	89.48 (9)
N11—Rh1—C14	93.1 (1)	93.6 (1)	92.6 (2)	92.6 (1)
N11—C2—C4—O12	−2.6 (2)	4.1 (2)	1.2 (4)	1.5 (2)
θE e	155.77 (2)	156.39 (3)	156.0 (2)	156.23 (4)

Notes: (a) This work; (b) N,O-bid = 4-(2,3-dimethyl phenylamino)pent-3-en-2-onato (Venter et al., 2009 ▶); (c) N,O-bid = 4-amino-pent-3-en-2-onato (Damoense et al., 1994 ▶); (d) N,O-bid = 4-amino-1,1,1-trifluoro-pent-3-en-2-onato (Varshavsky et al., 2001 ▶); (e) cone angle (Tolman, 1977 ▶).