Table 1. Selected terminal metal–oxygen bond lengths.

M–O moiety	Complex	d(M–O)/Å	Reference
Mn(iv)–Oterm	MnO(ditox)3–	1.628(2)	This paper
Mn(iv)–Oterm	MnO(BnTPEN)2+ g	1.69 b	43
Mn(iv)–Oterm	MnO(OH)(Me2EBC)2+ h	1.71 b	34
Cr(v)–Oterm	CrO(ditox)3	1.649(2)	31
V(v)–Oterm	VO(ditox)3	1.605(1)	31
Fe(iii)–OHterm	Fe(iii)(OH)(ditox)3–	1.890(1)	30
Mn(iv)–OHterm	Mn(iv)(OH)(buea)– a	1.83 b	35
Mn(v)–Oterm	MnO(TAML)– c	1.549(3)	20
Mn(v)–Oterm	MnO(TAML′)– d	1.5555(12)	19
Mn(v)–Oterm	MnO(PHAB)– e	1.558(4)	21
Mn(v)–Oterm	MnO(TBP8Cz) f	1.5455(18)	22

^a[H₃buea] = tris[(N′-tert-butylureaylato)-N-ethylene]amide.

^bDistance determined from EXAFS.

^cH₄TAML = 6,6-diethyl-3,3,9, tetramethyl-1,8,9,11-tetrahydro-4λ2-pyrido[2,3-e][1,4,7,10]tetraazacyclo-tridecine-2,5,7,10(3H,6H)-tetraone.

^dH₄TAML′ = 3,4,8,9-tetrahydro3,3,6,6,9,9-hexamethyl-1H-1,4,8,11-benzotetraazocyclotridecane-2,5,7,10(6H,11H)tetrone.

^eH₄PHAB = 1,2-bis(2,2-diphenyl-2-hydroxyethanamido)benzene.

^fH₃TBP8Cz = octakis(p-tert-butylphenyl)corrolazine.

^gBnTPEN = N-benzyl-N,N′,N′-tris(2-pyridylmethyl)-1,2-diaminoethane.

^hMe₂EBC = 4,11-dimethyl-1,4,8,11-tetraazabicyclo[6.6.2]hexadecane.