Titanium complexes with nitrogen

Details Titanium complexes with nitrogen Titanium complexes with nitrogen

1975-11-28

1977-05-17

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252431N, 260 2M, 260429CY, 260676R, 260680R, 26068315D, 423352, 423358, C07F 728

Patent

active

040241696

ABSTRACT:
Complexes of the titanium cyclopentadienyl compound ##STR1## and nitrogen, having the probable structure: ##STR2## where the symbol N.apprxeq.N represents a bonding state intermediate between the azo-N=N- bond and the hydrazine =N-N= bond; such complex having the simple dimeric form as indicated by molecular weight determination on this form dissolved in tetrahydrofuran, and having a polymeric form wherein a nitrogen atom of one molecule of the dimeric form is coordinated by a dative link with a Ti atom of another molecule of the dimeric form, as suggested by low solubility of this polymeric form in 1,2-dimethoxyethane and breakdown of this form to the dimeric form by action of tetrahydrofuran.
Another related complex is a black solid nitrogen-containing reaction product of the above titanium cyclopentadienyl compound in dry state with nitrogen at about 60 atmospheres pressure, having an infrared spectrum typical of a metallocene compound with no N-N or Ti-N vibration absorption bands.
The nitrogen in these complexes is reactive, e.g. with reducing agents such as potassium naphthalene, to afford ammonia. Moreover, the complexes are catalytically active for hydrocarbon conversions such as conversion of ethylene to ethane, butane, 1-butene and 1,3-butadiene.

REFERENCES:
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