In Search for Titanocene Complexes with Improved Cytotoxic Activity: Synthesis, X-Ray Structure, and Spectroscopic Study of Bis(𝜂⁵-cyclopentadienyl)difluorotitanium(IV)

Table 3

Comparison of some important molecular parameters (average values) for the four prototype titanocene dihalogenides, [Ti(𝜂⁵-C₅H₅)₂X₂].

Compound	Ti–Cp^a (Å)	Ti–X (Å)	Cp–Ti–Cp (°)	X–Ti–X (°)	Ref.
[Ti(𝜂^5-C5H5)2F2]	2.066	1.856	128.5	96.0	present work
[Ti(𝜂^5-C5H5)2Cl2]	2.059	2.364	131.0	94.5	[26]
[Ti(𝜂^5-C5H5)2Br2]	2.058	2.493	131.6	94.9	[27]
[Ti(𝜂^5-C5H5)2I2]	2.045	2.769	132.3	92.8	[28]

^aCp = 𝜂⁵-cyclopentadienyl ring.