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

[Rh(CO){P(OPh)₃}(Cp)]₂²⊕

Formula Unicode styled: 
[Rh(CO){P(OPh)₃}(Cp)]₂²⊕
Compound name(s): 
bis-[carbonyl-(η⁵-cyclopentadienyl)-(triphenylphosphite-P)-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

[Rh(CN){P(OPh)₃}₃]

Formula Unicode styled: 
[Rh(CN){P(OPh)₃}₃]
Compound name(s): 
Cyano-tris(triphenylphosphite)-rhodium
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–[Rh(μ₂-O₂CMe)₂{P(OPh)₃}]₂

Formula Unicode styled: 
cis,cis,trans–[Rh(μ₂-O₂CMe)₂{P(OPh)₃}]₂
Compound name(s): 
bis-[di(μ₂-Acetato-O,O')-(tetrahydrothiophene)-rhodium]
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–[Rh(μ₂-O₂CCF₃)₂{P(OPh)₃}]₂

Formula Unicode styled: 
cis,cis,trans–[Rh(μ₂-O₂CCF₃)₂{P(OPh)₃}]₂
Compound name(s): 
bis-[bis-(μ₂-Trifluoroacetato)-(triphenylphosphite)-rhodium]
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–[Rh(CO){P(OPh)₃}(Tp*-κ²N]

Formula Unicode styled: 
cis–[Rh(CO){P(OPh)₃}(Tp*-κ²N]
Compound name(s): 
Carbonyl-(hydrogen-tris(3,5-dimethylpyrazolyl)borato-N,N')-(triphenylphosphite)-rhodium
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–[Rh(CO){P(OPh)₃}(Acac)]

Formula Unicode styled: 
cis–[Rh(CO){P(OPh)₃}(Acac)]
Compound name(s): 
(Acetylacetonato-O,O')-carbonyl-(triphenylphosphite-P)-rhodium
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–[Rh(Br)₂(NO){P(OPh)₃}₂]

Formula Unicode styled: 
cis–[Rh(Br)₂(NO){P(OPh)₃}₂]
Compound name(s): 
Dibromo-nitrosyl-bis(triphenylphosphite)-rhodium
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

[Ru{P(OPh)₃}(η⁴-OCC₄H₄)(Cp)]⊕

Formula Unicode styled: 
[Ru{P(OPh)₃}(η⁴-OCC₄H₄)(Cp)]⊕
Compound name(s): 
(η⁵-Cyclopentadienyl)-(η⁴-cyclopentadienone)-triphenoxyphosphine-ruthenium(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

[Ru(Cl){P(OPh)₃}₂(Cp*)]

Formula Unicode styled: 
[Ru(Cl){P(OPh)₃}₂(Cp*)]
Compound name(s): 
Chloro-(η⁵-pentamethyl-cyclopentadienyl)-bis(triphenylphosphite)-ruthenium
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

[Ru(Cl)(PPh₃){P(OPh)₃}(Cp)]

Formula Unicode styled: 
[Ru(Cl)(PPh₃){P(OPh)₃}(Cp)]
Compound name(s): 
Chloro-(η⁵-cyclopentadienyl)-triphenylphosphine-triphenylphosphite-ruthenium
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–[Fe(SiCl₃)(CO)₃{P(OPh)₃}]⊖

Formula Unicode styled: 
trans–[Fe(SiCl₃)(CO)₃{P(OPh)₃}]⊖
Compound name(s): 
tricarbonyl-trichlorosilyl-triphenylphosphite-iron)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

trans–[Fe(CHO)(CO)₃{P(OPh)₃}]⊖

Formula Unicode styled: 
trans–[Fe(CHO)(CO)₃{P(OPh)₃}]⊖
Compound name(s): 
formyl-tricarbonyl-triphenylphosphite-iron(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

mer–[Fe(H)(SiPh₃)(CO)₃{P(OPh)₃}]

Formula Unicode styled: 
mer–[Fe(H)(SiPh₃)(CO)₃{P(OPh)₃}]
Compound name(s): 
Tricarbonyl-hydrido-(triphenylsilyl)-(triphenylphosphite)-iron
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

[Fe{P(OPh)₃}₂(TeMe₂)(Cp)]⊕

Formula Unicode styled: 
[Fe{P(OPh)₃}₂(TeMe₂)(Cp)]⊕
Compound name(s): 
(η⁵-Cyclopentadienyl)-bis(triphenylphosphite)-dimethyltellurium-iron(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

[Fe(NCMe){P(OPh)₃}₂(Cp)]⊕

Formula Unicode styled: 
[Fe(NCMe){P(OPh)₃}₂(Cp)]⊕
Compound name(s): 
(Acetonitrile)-(η⁵-cyclopentadienyl)-bis(triphenylphosphite)-iron(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

[Fe(H)(CO)₃{P(OPh)₃}]⊖

Formula Unicode styled: 
[Fe(H)(CO)₃{P(OPh)₃}]⊖
Compound name(s): 
tricarbonyl-hydrido-triphenylphosphite-iron(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

[Fe(H)(CO)₂{P(OPh)₃}₂]⊖

Formula Unicode styled: 
[Fe(H)(CO)₂{P(OPh)₃}₂]⊖
Compound name(s): 
dicarbonyl-hydrido-bis(triphenylphosphito)-iron(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

[Fe(COMe)(CO)₃{P(OPh)₃}]⊖

Formula Unicode styled: 
[Fe(COMe)(CO)₃{P(OPh)₃}]⊖
Compound name(s): 
acetyl-tricarbonyl-triphenylphosphite-iron(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

[Fe(CO)₃{P(OPh)₃}₂]

Formula Unicode styled: 
[Fe(CO)₃{P(OPh)₃}₂]
Compound name(s): 
Tricarbonyl-bis(triphenyl phosphite)-iron
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

[Fe(CO)₂{P(OPh)₃}₂(SO₂-κS)]

Formula Unicode styled: 
[Fe(CO)₂{P(OPh)₃}₂(SO₂-κS)]
Compound name(s): 
Dicarbonyl-(sulfur dioxide)-bis(triphenylphosphite)-iron
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