Reaction of[CpTi(
![](/images/entities/mgr.gif)
-H)]
2(
![](/images/entities/mgr.gif)
-
5:
5-C
10H
8)withCO
2 (3 atm) leads to the formation of thebis(formato)complex[CpTi(
![](/images/entities/mgr.gif)
-
1-(O)CHO)]
2(C
10H
8)(
1). Complex
1contains monodentate bridging formate ligands. Thedifference between vibrational frequencies
as(CO
2) and
s(CO
2) is 455cm
-1, the largest ever observed foramonodentate formate ligand.