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

cis–[Pt(Ox-κ²O)(En)]

Formula Unicode styled: 
cis–[Pt(Ox-κ²O)(En)]
Compound name(s): 
(Ethane-1,2-diamine-N,N')-(oxalato-O,O')-platinum
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–[Pt(Ox-κ²O)(PMe₃)₂]

Formula Unicode styled: 
cis–[Pt(Ox-κ²O)(PMe₃)₂]
Compound name(s): 
(Oxalato-O,O')-bis(trimethylphosphine)-platinum
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,cis–[Ir(Cl)(Ox-κ²O)(Py)₃]

Formula Unicode styled: 
mer,cis–[Ir(Cl)(Ox-κ²O)(Py)₃]
Compound name(s): 
Chloro-oxalato-tripyridine-iridium
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

[Ir(Ox-κ²O)₃]³⊖

Formula Unicode styled: 
[Ir(Ox-κ²O)₃]³⊖
Compound name(s): 
tris(oxalato) iridium(3-)
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–[Mn(OH₂)₂(Ox-κ²O)₂]

Formula Unicode styled: 
trans–[Mn(OH₂)₂(Ox-κ²O)₂]
Compound name(s): 
diaqua-bis(oxalato)-manganese
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,cis,trans–[Mn(F)₂(OH₂)₂(Ox-κ²O)]⊖

Formula Unicode styled: 
cis,cis,trans–[Mn(F)₂(OH₂)₂(Ox-κ²O)]⊖
Compound name(s): 
diaqua-difluoro-(oxalato-O,O')-manganese(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

[Mn(OH₂)₂(Ox-κ²O)(Bpy)]

Formula Unicode styled: 
[Mn(OH₂)₂(Ox-κ²O)(Bpy)]
Compound name(s): 
Diaqua-(2,2'-bipyridine)-(oxalato)-manganese
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)(Dien-κ³N)]

Formula Unicode styled: 
[Cu(Ox-κ²O)(Dien-κ³N)]
Compound name(s): 
Diethylenetriamine-(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

[Tc(μ₂–O)(Ox-κ²O)₂]₂⁴⊖

Formula Unicode styled: 
[Tc(μ₂–O)(Ox-κ²O)₂]₂⁴⊖
Compound name(s): 
bis((μ₂-oxo)-bis(oxalato-O,O')-technetium)(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

[Tc(Ox-κ²O)₃]²⊖

Formula Unicode styled: 
[Tc(Ox-κ²O)₃]²⊖
Compound name(s): 
tris(oxalato-O,O')-technetium(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

cis–[Os(I)₄(Ox-κ²O)]²⊖

Formula Unicode styled: 
cis–[Os(I)₄(Ox-κ²O)]²⊖
Compound name(s): 
tetra-iodo-(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

fac–[Re(O)(Ox-κ²O)(Tp-κ³N)]

Formula Unicode styled: 
fac–[Re(O)(Ox-κ²O)(Tp-κ³N)]
Compound name(s): 
(Hydrido-tris(1-pyrazolyl)borato)-(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

cis–[Re(Cl)₄(Ox-κ²O)]²⊖

Formula Unicode styled: 
cis–[Re(Cl)₄(Ox-κ²O)]²⊖
Compound name(s): 
tetrachloro-(oxalato)-rhenium(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

[Cr(Ox-κ²O)(En)₂]⊕

Formula Unicode styled: 
[Cr(Ox-κ²O)(En)₂]⊕
Compound name(s): 
bis(1,2-ethylenediamine-N,N')-(oxalato-O,O')-chromium(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

[Mo(O)(O₂)₂(Ox-κ²O)]²⊖

Formula Unicode styled: 
[Mo(O)(O₂)₂(Ox-κ²O)]²⊖
Compound name(s): 
(oxalato-O,O')-oxo-bis(peroxo-O,O')-molybdenum(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(Ox-κ²O)₃]³⊖

Formula Unicode styled: 
[Ta(Ox-κ²O)₃]³⊖
Compound name(s): 
tris(ethanedioato)-oxo-tantalum(3-)
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

[Nb(O)(Ox-κ²O)₃]³⊖

Formula Unicode styled: 
[Nb(O)(Ox-κ²O)₃]³⊖
Compound name(s): 
oxo-tris(oxalato-O,O')-niobium(3-)
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

[Nb(O)(Ox-κ²O)₂(OH₂)₂]⊖

Formula Unicode styled: 
[Nb(O)(Ox-κ²O)₂(OH₂)₂]⊖
Compound name(s): 
diaqua-oxo-bis(oxalato-O,O')-niobium(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–[Nb(O₂)₂(Ox-κ²O)₂]³⊖

Formula Unicode styled: 
cis–[Nb(O₂)₂(Ox-κ²O)₂]³⊖
Compound name(s): 
bis(peroxo)-bis(oxalato)-niobium(3-)
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

[Yb(Ox-κ²O)₄]⁵⊖

Formula Unicode styled: 
[Yb(Ox-κ²O)₄]⁵⊖
Compound name(s): 
tetrakis(oxalato-O,O')-ytterbium(5-)
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