Transition metal phosphate complex

Some bonding modes in sulfate complexes.

Transition metal phosphate complexes are coordination complexes with one or more phosphate ligands. Phosphate binds to metals through one, two, three, or all four oxygen atoms. The bidentate coordination mode is common. One example is [Co(ethylenediamine)₂)(PO₄)].^[1]

References

^ Anderson, Bryan; Milburn, Ronald M.; Harrowfield, John M.; Robertson, Glen B.; Sargeson, Alan M. (1977). "Cobalt(III)-promoted hydrolysis of a phosphate ester". Journal of the American Chemical Society. 99 (8): 2652–2661. doi:10.1021/ja00450a042. PMID 850030.

[1] Anderson, Bryan; Milburn, Ronald M.; Harrowfield, John M.; Robertson, Glen B.; Sargeson, Alan M. (1977). "Cobalt(III)-promoted hydrolysis of a phosphate ester". Journal of the American Chemical Society. 99 (8): 2652–2661. doi:10.1021/ja00450a042. PMID 850030.

[1]

v t e Coordination complexes
H donors:	H⁻ H₂
B donors:	BR−2 B_mH_n
C donors:	R⁻ RC(O)⁻ HC(O)⁻ CH₂=CHCH−2 C(CH₂)₃ CH₂=CH₂ RC₂R C₆H₄ CN⁻ CO CO₂ C⁴⁻ C₆R₆ C₆₀ & C₇₀ RNC =CR₂ ≡CR C₅H−5 C₉H−7
Si donors:	H_nSiR_4−n R₃Si⁻
N donors:	NH₃ N−3 imidazole NO RNO NO−2 py amino acid N³⁻ RN²⁻ RCN bipy phen porphyrin (Me₃Si)₂N⁻ N₂ ⁻NCS
P donors:	PR₃ PR−2 PR₂OH
Bi donors:	R_nBi_n RBi
O donors:	H₂O OH⁻ R₂O RO⁻ O²⁻ O₂ CO2−3 & HCO−3 C₂O2−4 RCO−2 RCONR'₂ OC(NR₂)₂ acac R₂CO ONO⁻ NO−3 ClO−4 C₅H₅NO OSR₂ SO2−4 PO3−4 OPR₃
S donors:	R₂NCS−2 RS⁻ R₂S R₂C₂S2−2 SO₂ SO2−3 S₂O2−3 SR₂O NCS⁻
Halide donors:	F⁻ F₂ Cl⁻ Br⁻ I⁻