Organo metallic ligands

terminal or bridging hydride

FC: -1 # of E: 2

terminal halide

FC: -1 # of e: 2

bridging halide

FC: -1 # of e: 4

terminal alkoxide (OR) or thiolate (SR)

FC: -1 # of e: 2

bridging alkoxide or thiolate

FC: -1 # of e: 4

terminal amide or phosphide ( NR2 PR2)

FC: -1 # of e: 2

bridging amide or phosphide

FC: -1 # of e: 4

ER or EX (e= Si Ge or Sn )

FC: -1 # of e: 2

alkyls

FC : -1 # of e: 2

bridging alkyl

FC: -1 # of e: 2

FC: -1 # of e: 2

FC: -1 # of e: 4

FC: -1 # of e: 4

FC: -1 # of e: 4

FC: 0 # of e: 4

FC: -1 # of e: 6

FC: 0 # of e: 6

FC: -1 # of e : 8

FC: -1 # of e: 2

FC: -1 # of e: 4

FC: 0 # of e: 2

FC: 0 # of e : 2

FC: -1 # of e: 4

FC: 0 # of e: 2

FC: 0 # of e: 4

fischer carbene

FC: 0 # of e: 2

Schrock carbene

FC: -2 # of e : 4

FC: -2 # of e: 4

Terminal akylidyne or carbene (CR CX)

FC: -3 # of e: 6

FC: -3 # of e : 6

FC: 0 # of e 2

Isocyanide (CNR)

FC: 0 # of e:2

Terminal dinitrogen

FC: 0 # of e 2

Terminal or bridging nitrosyl ( NO - triple )

FC: +1 # of e 2

Terminal or bridging nitrosyl ( NO -Double )

FC: -1 # of e 2

FC: +1 # of e : 2

FC: 0 # of e 2

FC: 0 # of e: 2

FC: 0 # of e : 2

nitride (m- triple- n)

FC: -3 # of e : 6

terminal or bridging oxide

FC: -2 # of e: 4

terminal or bridging peroxide

FC: -2 # of e : 4

superoxide

FC: -1 # of e : 2