3-coordinate: trigonal planar (p-block element, 1 lone pair)

[Ta(OHMe)(Ox-κ²O)₃]²⊖

Formula Unicode styled: 
[Ta(OHMe)(Ox-κ²O)₃]²⊖
Compound name(s): 
tris(oxalato)-(methanolato)-tantalum(2-)
Central atom: 
Attached groups: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

[Ta(OH)(Ox-κ²O)₃]²⊖

Formula Unicode styled: 
[Ta(OH)(Ox-κ²O)₃]²⊖
Compound name(s): 
tris(oxalato)-(hydroxy)-tantalum(2-)
Central atom: 
Attached groups: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

mer–[Os(Cl)₃(NO)(Ox-κ²O)]²⊖

Formula Unicode styled: 
mer–[Os(Cl)₃(NO)(Ox-κ²O)]²⊖
Compound name(s): 
trichloro-nitroso-oxalato-osmium(2-)
Central atom: 
Attached groups: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

trans–[Os(O)₂(Ox-κ²O)₂]

Formula Unicode styled: 
trans–[Os(O)₂(Ox-κ²O)₂]
Compound name(s): 
(Oxalato-O,O')-dioxo-dipyridyl-osmium
Central atom: 
Attached groups: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

trans–[Os(O)₂(Ox-κ²O)₂]²⊖

Formula Unicode styled: 
trans–[Os(O)₂(Ox-κ²O)₂]²⊖
Compound name(s): 
dioxo-bis(oxalato)-osmium(2-)
Central atom: 
Attached groups: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

trans–[U(O)₂(Ox-κ²O)₃]⁴⊖

Formula Unicode styled: 
trans–[U(O)₂(Ox-κ²O)₃]⁴⊖
Compound name(s): 
tris(oxalato)-dioxo-uranium(4-)
Central atom: 
Attached groups: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

[W(CO)₄(Ox-κ²O)]²⊖

Formula Unicode styled: 
[W(CO)₄(Ox-κ²O)]²⊖
Compound name(s): 
(oxalato)-tetracarbonyl-tungsten(2-)
Central atom: 
Attached groups: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

[Re(OMe)(Ox-κ²O)(O)(Dppe-κ²P)]

Formula Unicode styled: 
[Re(OMe)(Ox-κ²O)(O)(Dppe-κ²P)]
Compound name(s): 
(1,2-bis(Diphenylphosphino)ethane)-methoxy-(oxalato-O,O')-oxo-rhenium
Central atom: 
Attached groups: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

[Re(OMe)(Ox-κ²O)(O)(Bpy)]

Formula Unicode styled: 
[Re(OMe)(Ox-κ²O)(O)(Bpy)]
Compound name(s): 
(2,2'-Bipyridyl)-methoxy-(oxalato-O,O')-oxo-rhenium
Central atom: 
Attached groups: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

[Cu(Ox-κ²O)₂]²⊖

Formula Unicode styled: 
[Cu(Ox-κ²O)₂]²⊖
Compound name(s): 
di-aqua-bis(oxalato-O,O')-copper
Central atom: 
Attached groups: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

catena–1D-[Th(Ox-κ²O)₃(μ₂-Ox)]⁴⊖

Formula Unicode styled: 
catena–1D-[Th(Ox-κ²O)₃(μ₂-Ox)]⁴⊖
Compound name(s): 
catena-[(μ-oxalato)-tris(oxalato)-thorium(4-)]
Central atom: 
Attached groups: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

catena–1D-[Pu(Ox-κ²O)₃(μ₂-Ox)]⁴⊖

Formula Unicode styled: 
catena–1D-[Pu(Ox-κ²O)₃(μ₂-Ox)]⁴⊖
Compound name(s): 
catena-[(μ₂-oxalato)-tris(oxalato)-plutonium(4-)]
Central atom: 
Attached groups: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

fac–[Re(=NBuᵗ)(Ox-κ²O)([9]aneN₃-κ³N)]⊕

Formula Unicode styled: 
fac–[Re(=NBuᵗ)(Ox-κ²O)([9]aneN₃-κ³N)]⊕
Compound name(s): 
t-Butylimido-(oxalato)-(1,4,7-triazacyclononane)-rhenium(1+)
Central atom: 
Attached groups: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

cis–[Co(Ox-κ²O)([14]aneN₄-κ⁴N)]⊕

Formula Unicode styled: 
cis–[Co(Ox-κ²O)([14]aneN₄-κ⁴N)]⊕
Compound name(s): 
(Oxalato-O,O')-(1,4,8,11-tetra-azacyclotetradecane)-cobalt(1+)
Central atom: 
Attached groups: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

[Am(O)₂(OC{O}Me-κ²O)₃]⊖

Formula Unicode styled: 
[Am(O)₂(OC{O}Me-κ²O)₃]⊖
Compound name(s): 
(tris(acetato)-dioxido-americium(1-)
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

[Np(O)₂(OC{O}Me-κ²O)₃]²⊖

Formula Unicode styled: 
[Np(O)₂(OC{O}Me-κ²O)₃]²⊖
Compound name(s): 
tris(acetato-O,O')-dioxo-neptunium(2-)
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

trans–[Np(O)₂(OC{O}Me-κ²O)₃]²⊖

Formula Unicode styled: 
trans–[Np(O)₂(OC{O}Me-κ²O)₃]²⊖
Compound name(s): 
tris(acetato-O,O')-dioxo-neptunate
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

trans–[Np(O)₂(OH₂)(OC{O}Me-κ²O)(N₂C₃H₄)₂]

Formula Unicode styled: 
trans–[Np(O)₂(OH₂)(OC{O}Me-κ²O)(N₂C₃H₄)₂]
Compound name(s): 
(Acetato-O,O')-aqua-bis(1H-imidazole-kappaN-)-dioxo-neptunium
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

[U(O)₂(μ₂-O₂CMe)(OC{O}Me-κ²O)(OPPh₃)]₂

Formula Unicode styled: 
[U(O)₂(μ₂-O₂CMe)(OC{O}Me-κ²O)(OPPh₃)]₂
Compound name(s): 
bis-[(μ₂-Acetato)-(acetato-O,O')-dioxo-(triphenylphosphine oxide)-uranium]
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

[U(O)₂(OC{O}Me-κ²O)₃]⊖

Formula Unicode styled: 
[U(O)₂(OC{O}Me-κ²O)₃]⊖
Compound name(s): 
tris(acetato-O,O')-dioxo-uranium(1-)
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2