4-coordinate: tetrahedral (p-block element, 2 lone pairs)

[Cr(OPrⁱ)₂(NO)(Cp*)]

Formula Unicode styled: 
[Cr(OPrⁱ)₂(NO)(Cp*)]
Compound name(s): 
(η-Pentamethylcyclopentadienyl)-bis(isopropoxy)-nitrosyl-chromium
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

[V(OPrⁱ)₃(μ₂-OPrⁱ)]₂

Formula Unicode styled: 
[V(OPrⁱ)₃(μ₂-OPrⁱ)]₂
Compound name(s): 
bis-[(μ₂-Isopropoxo)-tris(isopropoxy)-vanadium]
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

[V(Cl)(OPrⁱ)(O)(Tp-κ³N)]

Formula Unicode styled: 
[V(Cl)(OPrⁱ)(O)(Tp-κ³N)]
Compound name(s): 
Chloro-oxo-isopropoxy-(hydrido-tris(pyrazolyl)borate)-vanadium
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

[V(OPrⁱ)(O)(Acac)₂]

Formula Unicode styled: 
[V(OPrⁱ)(O)(Acac)₂]
Compound name(s): 
bis(Acetylacetonato)-isopropoxy-oxo-vanadium
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

[Ti(OPrⁱ)₃(μ₂-OPrⁱ)(NH₂Prⁿ)]₂

Formula Unicode styled: 
[Ti(OPrⁱ)₃(μ₂-OPrⁱ)(NH₂Prⁿ)]₂
Compound name(s): 
bis-[(μ₂-isopropanolato)-(n-propylamine)-tri(isopropanolato)-titanium]
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

[Ti(OPrⁱ)₃(μ₂-OPrⁱ)(NH₂Bz)]₂

Formula Unicode styled: 
[Ti(OPrⁱ)₃(μ₂-OPrⁱ)(NH₂Bz)]₂
Compound name(s): 
bis-[(μ₂-isopropanolato)-(benzylamine)-tri(isopropanolato)-titanium]
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

[Ti(OPrⁱ)₃(μ₂-OPrⁱ)(NH₂Buⁿ)]₂

Formula Unicode styled: 
[Ti(OPrⁱ)₃(μ₂-OPrⁱ)(NH₂Buⁿ)]₂
Compound name(s): 
bis-[(μ₂-isopropanolato)-(n-butylamine)-tri(isopropanolato)-titanium]
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–[Ti(Cl)₄(OPrⁱ)(Thf)]⊖

Formula Unicode styled: 
trans–[Ti(Cl)₄(OPrⁱ)(Thf)]⊖
Compound name(s): 
isopropoxy-tetrachloro-(tetrahydrofuran-O)-titanium(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

[Ti(Cl)₅(OPrⁱ)]²⊖

Formula Unicode styled: 
[Ti(Cl)₅(OPrⁱ)]²⊖
Compound name(s): 
isopropoxy-pentachloro-titanium(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

[Ti(Cl)₂(OPrⁱ)(Cp)]

Formula Unicode styled: 
[Ti(Cl)₂(OPrⁱ)(Cp)]
Compound name(s): 
(η-Cyclopentadienyl)-dichloro-isopropoxy-titanium
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

mer,cis–[Ti(Cl)₃(OPrⁱ)(Thf)₂]

Formula Unicode styled: 
mer,cis–[Ti(Cl)₃(OPrⁱ)(Thf)₂]
Compound name(s): 
Isopropoxy-trichloro-bis(tetrahydrofuran)-titanium
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

cis,cis,trans–[Ti(Cl)₂(OPrⁱ)₂(Py)₂]

Formula Unicode styled: 
cis,cis,trans–[Ti(Cl)₂(OPrⁱ)₂(Py)₂]
Compound name(s): 
Dichloro-bis(isopropoxy)-bis(pyridine)-titanium
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

[Ir(Cl)(CO){P(OPh)₃}(μ₂-O₂CMe)]₂

Formula Unicode styled: 
[Ir(Cl)(CO){P(OPh)₃}(μ₂-O₂CMe)]₂
Compound name(s): 
bis-[(μ₂-Acetato-O,O')-carbonyl-chloro-(triphenylphosphite)-iridium(Ir—Ir)]
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

[Eu{P(OPh)₃}(Hfa-κO)₃]

Formula Unicode styled: 
[Eu{P(OPh)₃}(Hfa-κO)₃]
Compound name(s): 
tris(Hexafluoroacetylacetonato)-triphenylphosphoryl-europium
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–[Pd(SCN-κS)₂{P(OPh)₃}₂]

Formula Unicode styled: 
trans–[Pd(SCN-κS)₂{P(OPh)₃}₂]
Compound name(s): 
Di(thiocyanato)bis(triphenylphosphite) palladium
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

[Pd(Cl)(μ₂-Cl){P(OPh)₃}]₂

Formula Unicode styled: 
[Pd(Cl)(μ₂-Cl){P(OPh)₃}]₂
Compound name(s): 
bis-[(μ₂-Chloro)-chloro-triphenylphosphite-palladium]
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

[Pd(Br)₃{P(OPh)₃}]⊖

Formula Unicode styled: 
[Pd(Br)₃{P(OPh)₃}]⊖
Compound name(s): 
tribromo-triphenylphosphito-palladium(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

cis–[Pd(Cl)₂{P(OPh)₃}₂]

Formula Unicode styled: 
cis–[Pd(Cl)₂{P(OPh)₃}₂]
Compound name(s): 
Dichlorobis(triphenyphosphite)-palladium
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

cis–[Pd(Br)(Bz){P(OPh)₃}₂]

Formula Unicode styled: 
cis–[Pd(Br)(Bz){P(OPh)₃}₂]
Compound name(s): 
Benzyl-bromo-bis(triphenylphosphite)-palladium
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

[Rh{P(OPh)₃}₂(η⁶-C₇H₈)]⊕

Formula Unicode styled: 
[Rh{P(OPh)₃}₂(η⁶-C₇H₈)]⊕
Compound name(s): 
(η⁶-Toluene)-bis(triphenylphosphite)-rhodium(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