4-coordinate: see-saw (SS-4)

[Hg(CF₃)₂(μ₂-Cl)]₂²⊖

Formula Unicode styled: 
[Hg(CF₃)₂(μ₂-Cl)]₂²⊖
Compound name(s): 
bis-[bis(trifluoromethyl)-(μ₂-chloro)-mercury(1-)]
Central atom: 
Charge on central atom: 
-1
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: 
Hg«V2C4OIIE8B4Z0X3L1»
[MLXZ]𝘲 class: 
[MX3L1]-
MLXZ class (ENC, equivalent neutral class): 
MX2L2

catena–3D-[Hg(μ₂-I)₂(μ₂-Bpy-4,4')]

Formula Unicode styled: 
catena–3D-[Hg(μ₂-I)₂(μ₂-Bpy-4,4')]
Compound name(s): 
catena-[diodo-(μ₂-4,4'-bipyridine-N,N')-mercury]
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: 
Hg«V2C6OIIE12B6Z0X2L4»
[MLXZ]𝘲 class: 
[MX2L4]
MLXZ class (ENC, equivalent neutral class): 
MX2L4

[Hg(I)₂(NC₅H₃Me₂)₂]

Formula Unicode styled: 
[Hg(I)₂(NC₅H₃Me₂)₂]
Compound name(s): 
di-iodo-bis(3,5-dimethylpyridine)-mercury
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: 
Hg«V2C4OIIE8B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2

catena–2D-[Hg(CN)₂(μ₂-Bpy-4,4')]

Formula Unicode styled: 
catena–2D-[Hg(CN)₂(μ₂-Bpy-4,4')]
Compound name(s): 
catena-[dicyano-(μ-4,4'-bipyridine)-mercury
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: 
Hg«V2C4OIIE8B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2

[Tl(Me)₂(μ₂-OXylyl)]₂

Formula Unicode styled: 
[Tl(Me)₂(μ₂-OXylyl)]₂
Compound name(s): 
bis-[dimethyl-(μ₂-2,6-dimethylphenoxido)-thallium]
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: 
Tl«V3C4OIIIE8B4Z0X3L1»
[MLXZ]𝘲 class: 
[MX3L1]
MLXZ class (ENC, equivalent neutral class): 
MX3L1

[Hg(Cl)₂(Dmso-κO)]₂

Formula Unicode styled: 
[Hg(Cl)₂(Dmso-κO)]₂
Compound name(s): 
bis-[dichloro-(μ-dimethylsulfoxide-mercury]
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: 
Hg«V2C4OIIE8B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2

trans–[Hg(I)(μ₂-I)(PBuⁿ₃)]₂

Formula Unicode styled: 
trans–[Hg(I)(μ₂-I)(PBuⁿ₃)]₂
Compound name(s): 
bis-[bromo-(μ₂-bromo)-tri-n-propylphosphine-mercury]
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: 
Hg«V2C4OIIE8B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2

catena–3D-[Hg(Cl)₂(μ₂-Cl)]⊖

Formula Unicode styled: 
catena–3D-[Hg(Cl)₂(μ₂-Cl)]⊖
Compound name(s): 
catena-[dichloro-(μ₃-chloro)-mercury(1-)]
Central atom: 
Charge on central atom: 
-1
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: 
Hg«V2C4OIIE8B4Z0X3L1»
[MLXZ]𝘲 class: 
[MX3L1]-
MLXZ class (ENC, equivalent neutral class): 
MX2L2

[Hg(Me)(μ₃-OSiMe₃)]₄

Formula Unicode styled: 
[Hg(Me)(μ₃-OSiMe₃)]₄
Compound name(s): 
tetrakis[(μ₃-trimethylsiloxy)-methyl-mercury]
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: 
Hg«V2C4OIIE8B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2

catena–1D-[Hg₂(μ₂-SO₄)]

Formula Unicode styled: 
catena–1D-[Hg₂(μ₂-SO₄)]
Compound name(s): 
dimercury sulphate
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: 
S«V6C4OVIE8B4L0X2Z2»
[MLXZ]𝘲 class: 
[MX2Z2]
MLXZ class (ENC, equivalent neutral class): 
MX2Z2

[Li(Dme)₂]⊕

Formula Unicode styled: 
[Li(Dme)₂]⊕
Compound name(s): 
bis(1,2-Dimethoxyethane-O,O')-lithium(1+)
Central atom: 
Attached groups: 
Charge on central atom: 
1
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: 
Li«V1C4OIE8B4Z0X0L4»
[MLXZ]𝘲 class: 
[ML4]+
MLXZ class (ENC, equivalent neutral class): 
MX1L3

catena–1D-[Rb(μ₂-OBuᵗ)(μ₂-OHBuᵗ)]

Formula Unicode styled: 
catena–1D-[Rb(μ₂-OBuᵗ)(μ₂-OHBuᵗ)]
Compound name(s): 
catena-[(μ₂-t-Butoxo-O,O)-(μ₂-t-butanol-O,O)-rubidium]
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: 
Rb«V1C4OIE8B4Z0X1L3»
[MLXZ]𝘲 class: 
[MX1L3]
MLXZ class (ENC, equivalent neutral class): 
MX1L3

[Fe(OCPh₃)₂(Thf)₂]

Formula Unicode styled: 
[Fe(OCPh₃)₂(Thf)₂]
Compound name(s): 
bis(Tetrahydrofuran-O)-bis(triphenylmethoxy-O)-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: 
Fe«V2C4OIIE14B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2

[Pt(PPh₃)₂(SO₂-κS)₂]

Formula Unicode styled: 
[Pt(PPh₃)₂(SO₂-κS)₂]
Compound name(s): 
bis(Sulfur dioxide)-bis(triphenylphosphine) platinum
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: 
Pt«V0C4OOE18B4Z0X0L4»
[MLXZ]𝘲 class: 
[ML4]
MLXZ class (ENC, equivalent neutral class): 
ML4

[Tl(Me)₂(μ₂-SePh)]₂

Formula Unicode styled: 
[Tl(Me)₂(μ₂-SePh)]₂
Compound name(s): 
bis(μ₂-Phenylselenido)-tetramethyl-di-thallium
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: 
Tl«V3C4OIIIE8B4Z0X3L1»
[MLXZ]𝘲 class: 
[MX3L1]
MLXZ class (ENC, equivalent neutral class): 
MX3L1

[Tl(Me)₂(μ₂-OPh)]₂

Formula Unicode styled: 
[Tl(Me)₂(μ₂-OPh)]₂
Compound name(s): 
bis(μ₂-phenoxido)-tetramethyl-di-thallium
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: 
Tl«V3C4OIIIE8B4Z0X3L1»
[MLXZ]𝘲 class: 
[MX3L1]
MLXZ class (ENC, equivalent neutral class): 
MX3L1

[Ir(PPh₃)₂(NO)₂]⊕

Formula Unicode styled: 
[Ir(PPh₃)₂(NO)₂]⊕
Compound name(s): 
Dinitrosyl-bis(triphenylphosphine) iridium(1+)
Central atom: 
Charge on central atom: 
1
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: 
Ir«V3C4O-IE18B6Z0X2L4»
[MLXZ]𝘲 class: 
[MX2L4]+
MLXZ class (ENC, equivalent neutral class): 
MX3L3

[Hg(Cl)₂(CN)₂]²⊖

Formula Unicode styled: 
[Hg(Cl)₂(CN)₂]²⊖
Compound name(s): 
dichloro-dicyano-mercury(2-)
Central atom: 
Attached groups: 
Charge on central atom: 
-2
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: 
Hg«V2C4OIIE8B4Z0L0X4»2⊖
[MLXZ]𝘲 class: 
[MX4]2-
MLXZ class (ENC, equivalent neutral class): 
MX2L2

[Hg(Br)₂(OPPh₃)₂]

Formula Unicode styled: 
[Hg(Br)₂(OPPh₃)₂]
Compound name(s): 
Dibromo-bis(triphenylphosphine oxide)-mercury
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: 
Hg«V2C4OIIE8B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2

[Hg(CN)₂(NH₂Cy)₂]

Formula Unicode styled: 
[Hg(CN)₂(NH₂Cy)₂]
Compound name(s): 
bis(Cyano)-bis(cyclohexylamine)-mercury
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: 
Hg«V2C4OIIE8B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2