This would mean the formation of a sigma and one or two pi bonds, all coordinate. I haven't heard of this happening, like fluorine anion or water with 2 lone pairs on O will donate only one lone pair, but I wanted to know why it's not possible. Thanks.

This would mean the formation of a σ and one or two π bonds, all coordinate. I haven't heard of this happening, like a fluorine anion or water with two lone pairs on oxygen will donate only one lone pair, but I wanted to know why it's not possible.

This would involve H2O becoming sp2 hybridised instead and forming a coordinate pi bond with the metal. Both the sigma and pi bonds would be coordinate bonds. I haven't ever heard of coordinate bonds forming this way, but I still wanted to know why it's not possible. Thanks.

This would mean the formation of a sigma and one or two pi bonds, all coordinate. I haven't heard of this happening, like fluorine anion or water with 2 lone pairs on O will donate only one lone pair, but I wanted to know why it's not possible. Thanks.