O (μ₂–oxo X+X)

catena–1D-[Nb(Cl)₃(μ₂–O)(SMe₂)]

Formula Unicode styled: 
catena–1D-[Nb(Cl)₃(μ₂–O)(SMe₂)]
Compound name(s): 
catena-[trichloro-oxo-dimethylsulfide]
Central atom: 
Niobium
Attached groups: 
Cl (chloro)
O (μ₂–oxo X+X)
SMe₂ (dimethylthioether)
Charge on central atom: 
0
Compound type: 
Catena-1D
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 5
Oxidation Number (ON) (Roman numerals): 
ON: (V)
Coordination Number (CN, sum of attached group denticities): 
CN: 6
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 12
Summary of calculated classifications: 
Nb«V5C6OVE12B6Z0X5L1»
[MLXZ]𝘲 class: 
[MX5L1]
MLXZ class (ENC, equivalent neutral class): 
MX5L1

catena–2D-[Nb(μ₂-Cl)₂(μ₂–O)]

Formula Unicode styled: 
catena–2D-[Nb(μ₂-Cl)₂(μ₂–O)]
Compound name(s): 
catena-[dichloro-oxo-niobium(Nb—Nb)]
vanadium dichloride oxide
Central atom: 
Niobium
Attached groups: 
Cl (μ₂-chloro)
O (μ₂–oxo X+X)
Charge on central atom: 
0
Compound type: 
Catena-2D
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 5
Oxidation Number (ON) (Roman numerals): 
ON: (IV)
Coordination Number (CN, sum of attached group denticities): 
CN: 7
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 14
Summary of calculated classifications: 
Nb«V5C7OIVE14B7Z0X5L2»
[MLXZ]𝘲 class: 
[MX5L2]
MLXZ class (ENC, equivalent neutral class): 
MX5L2

catena–1D-[Nb(Br)₄(μ₂–O)]⊖

Formula Unicode styled: 
catena–1D-[Nb(Br)₄(μ₂–O)]⊖
Compound name(s): 
catena-[tetrabromo-oxo-niobium(1-)]
Central atom: 
Niobium
Attached groups: 
Br (bromo)
O (μ₂–oxo X+X)
Charge on central atom: 
-1
Compound type: 
Catena-1D
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 5
Oxidation Number (ON) (Roman numerals): 
ON: (V)
Coordination Number (CN, sum of attached group denticities): 
CN: 6
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 12
Summary of calculated classifications: 
Nb«V5C6OVE12B6Z0L0X6»⊖
[MLXZ]𝘲 class: 
[MX6]-
MLXZ class (ENC, equivalent neutral class): 
MX5L1

catena–1D-[Nb(Br)₂(μ₂-Br)(μ₂–O)]

Formula Unicode styled: 
catena–1D-[Nb(Br)₂(μ₂-Br)(μ₂–O)]
Compound name(s): 
catena-[tribromo-oxo-niobium]
niobium oxide tribromide
Central atom: 
Niobium
Attached groups: 
Br (bromo)
Br (μ₂-bromo)
O (μ₂–oxo X+X)
Charge on central atom: 
0
Compound type: 
Catena-1D
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 5
Oxidation Number (ON) (Roman numerals): 
ON: (V)
Coordination Number (CN, sum of attached group denticities): 
CN: 6
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 12
Summary of calculated classifications: 
Nb«V5C6OVE12B6Z0X5L1»
[MLXZ]𝘲 class: 
[MX5L1]
MLXZ class (ENC, equivalent neutral class): 
MX5L1

catena–2D-[Nb(μ₂-Br)₂(μ₂–O)]

Formula Unicode styled: 
catena–2D-[Nb(μ₂-Br)₂(μ₂–O)]
Compound name(s): 
catena-[dibromo-oxo-niobium(Nb—Nb)]
niobium oxide dibromide
Central atom: 
Niobium
Attached groups: 
Br (μ₂-bromo)
O (μ₂–oxo X+X)
Charge on central atom: 
0
Compound type: 
Catena-2D
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 5
Oxidation Number (ON) (Roman numerals): 
ON: (IV)
Coordination Number (CN, sum of attached group denticities): 
CN: 7
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 14
Summary of calculated classifications: 
Nb«V5C7OIVE14B7Z0X5L2»
[MLXZ]𝘲 class: 
[MX5L2]
MLXZ class (ENC, equivalent neutral class): 
MX5L2

catena–1D-[Cr(O)₂(μ₂–O)]

Formula Unicode styled: 
catena–1D-[Cr(O)₂(μ₂–O)]
Compound name(s): 
catena-[trioxo-chromium]
chromium trioxide
Central atom: 
Chromium
Attached groups: 
O (oxo ⭀O X₂L)
O (μ₂–oxo X+X)
Charge on central atom: 
0
Compound type: 
Catena-1D
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 6
Oxidation Number (ON) (Roman numerals): 
ON: (VI)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 16
Summary of calculated classifications: 
Cr«V6C4OVIE16B8Z0X6L2»
[MLXZ]𝘲 class: 
[MX6L2]
MLXZ class (ENC, equivalent neutral class): 
MX6L2

[Er₂(μ₂–O)₃]

Formula Unicode styled: 
[Er₂(μ₂–O)₃]
Compound name(s): 
trioxido-dierbium|dierbium trioxide|erbium sesquioxide
Central atom: 
Erbium
Attached groups: 
O (μ₂–oxo X+X)
Charge on central atom: 
Compound type: 
Lattice
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 6
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 0
Summary of calculated classifications: 
Er«V3C6OIII»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class): 

[Ce{N(SiMe₃)₂}₂(μ₂–O)]₂

Formula Unicode styled: 
[Ce{N(SiMe₃)₂}₂(μ₂–O)]₂
Compound name(s): 
bis-[(μ₂-Oxo)-bis(bis(trimethylsilyl)amide)-cerium]
Central atom: 
Cerium
Attached groups: 
N(SiMe₃)₂ (bis(trimethylsilyl)amino: planar)
O (μ₂–oxo X+X)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (IV)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 12
Summary of calculated classifications: 
Ce«V4C4OIVE12B6Z0X4L2»
[MLXZ]𝘲 class: 
[MX4L2]
MLXZ class (ENC, equivalent neutral class): 
MX4L2

cis–[Ru(O)₂(μ₂–O)(Py)₂]₂

Formula Unicode styled: 
cis–[Ru(O)₂(μ₂–O)(Py)₂]₂
Compound name(s): 
bis-[(μ₂-Oxo)-dioxo-dipyridyl-ruthenium]
Central atom: 
Ruthenium
Attached groups: 
O (oxo X₂)
O (μ₂–oxo X+X)
Py (pyridine)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 6
Oxidation Number (ON) (Roman numerals): 
ON: (VI)
Coordination Number (CN, sum of attached group denticities): 
CN: 6
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 18
Summary of calculated classifications: 
Ru«V6C6OVIE18B8Z0X6L2»
[MLXZ]𝘲 class: 
[MX6L2]
MLXZ class (ENC, equivalent neutral class): 
MX6L2

catena–2D-[Ru(O)₂(μ₂–O)₂]⁴⊖

Formula Unicode styled: 
catena–2D-[Ru(O)₂(μ₂–O)₂]⁴⊖
Compound name(s): 
catena-[Tetraoxo-ruthenium(4-)]
Central atom: 
Ruthenium
Attached groups: 
O (oxo O⊖ X)
O (μ₂–oxo X+X)
Charge on central atom: 
-2
Compound type: 
Catena-2D
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (IV)
Coordination Number (CN, sum of attached group denticities): 
CN: 6
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 16
Summary of calculated classifications: 
Ru«V4C6OIVE16B6Z0L0X6»2⊖
[MLXZ]𝘲 class: 
[MX6]2-
MLXZ class (ENC, equivalent neutral class): 
MX4L2

catena–2D-[Fe(O)₂(μ₂–O)₂]⁴⊖

Formula Unicode styled: 
catena–2D-[Fe(O)₂(μ₂–O)₂]⁴⊖
Compound name(s): 
catena-[tetraoxo-iron(4-)]
Central atom: 
Iron
Attached groups: 
O (oxo O⊖ X)
O (μ₂–oxo X+X)
Charge on central atom: 
-2
Compound type: 
Catena-2D
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (IV)
Coordination Number (CN, sum of attached group denticities): 
CN: 6
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 16
Summary of calculated classifications: 
Fe«V4C6OIVE16B6Z0L0X6»2⊖
[MLXZ]𝘲 class: 
[MX6]2-
MLXZ class (ENC, equivalent neutral class): 
MX4L2

catena–3D-[Fe(μ₂–O)₂]⊖

Formula Unicode styled: 
catena–3D-[Fe(μ₂–O)₂]⊖
Compound name(s): 
catena-[dioxo-iron(2-)]
Central atom: 
Iron
Attached groups: 
O (μ₂–oxo X+X)
Charge on central atom: 
-1
Compound type: 
Catena-3D
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 13
Summary of calculated classifications: 
Fe«V3C4OIIIE13B4Z0L0X4»⊖
[MLXZ]𝘲 class: 
[MX4]-
MLXZ class (ENC, equivalent neutral class): 
MX3L1

[S(O)₂(μ₂–O)]₃

Formula Unicode styled: 
[S(O)₂(μ₂–O)]₃
Compound name(s): 
tris-[sulphur trioxide], tris-[sulfur trioxide]
Central atom: 
Sulfur
Attached groups: 
O (oxo Z)
O (μ₂–oxo X+X)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 6
Oxidation Number (ON) (Roman numerals): 
ON: (VI)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
S«V6C4OVIE8B4L0X2Z2»
[MLXZ]𝘲 class: 
[MX2Z2]
MLXZ class (ENC, equivalent neutral class): 
MX2Z2

catena–1D-[S(O)₂(μ₂–O)]

Formula Unicode styled: 
catena–1D-[S(O)₂(μ₂–O)]
Compound name(s): 
catena-[sulphur trioxide], catena-[sulfur trioxide]
Central atom: 
Sulfur
Attached groups: 
O (oxo Z)
O (μ₂–oxo X+X)
Charge on central atom: 
0
Compound type: 
Catena-1D
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 6
Oxidation Number (ON) (Roman numerals): 
ON: (VI)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
S«V6C4OVIE8B4L0X2Z2»
[MLXZ]𝘲 class: 
[MX2Z2]
MLXZ class (ENC, equivalent neutral class): 
MX2Z2

[Si(Me)(μ₂–O)]₈

Formula Unicode styled: 
[Si(Me)(μ₂–O)]₈
Compound name(s): 
Octamethyl-octa(siloxane)
Central atom: 
Silicon
Attached groups: 
Me (methyl)
O (μ₂–oxo X+X)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Si«V4C4OIIIE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

[Si(Mes)₂(μ₂–O)]₂

Formula Unicode styled: 
[Si(Mes)₂(μ₂–O)]₂
Compound name(s): 
Tetramesitylcyclodisiloxane
Central atom: 
Silicon
Attached groups: 
Mes (mesityl)
O (μ₂–oxo X+X)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (IV)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Si«V4C4OIVE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

[Si(C₆H₂Prⁱ₃)₂(μ₂–O)]₂

Formula Unicode styled: 
[Si(C₆H₂Prⁱ₃)₂(μ₂–O)]₂
Compound name(s): 
tetrakis(2,4,6-Tri-isopropylphenyl)-1,3-cyclodisiloxane
Central atom: 
Silicon
Attached groups: 
C₆H₂Prⁱ₃ (2,4,6-isopropylphenyl)
O (μ₂–oxo X+X)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (IV)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Si«V4C4OIVE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

[Si(Buᵗ)(Mes)(μ₂–O)]₂

Formula Unicode styled: 
[Si(Buᵗ)(Mes)(μ₂–O)]₂
Compound name(s): 
1,3-Di-t-butyl-1,3-dimesityl-cyclodisiloxane
Central atom: 
Silicon
Attached groups: 
Buᵗ (t-butyl)
Mes (mesityl)
O (μ₂–oxo X+X)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (IV)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Si«V4C4OIVE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

network–[Si(μ₂–O)₂]

Formula Unicode styled: 
network–[Si(μ₂–O)₂]
Compound name(s): 
network-[di-oxo-silicon]
silicon dioxide
Central atom: 
Silicon
Attached groups: 
O (μ₂–oxo X+X)
Charge on central atom: 
0
Compound type: 
Network
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (IV)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Si«V4C4OIVE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

[Se(O)₂(μ₂–O)]₄

Formula Unicode styled: 
[Se(O)₂(μ₂–O)]₄
Compound name(s): 
Tetra-[trioxo-selenium], selenium trioxide
Central atom: 
Selenium
Attached groups: 
O (oxo O⊖ X)
O (μ₂–oxo X+X)
Charge on central atom: 
2
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 6
Oxidation Number (ON) (Roman numerals): 
ON: (VI)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Se«V6C4OVIE8B4Z0L0X4»2⊕
[MLXZ]𝘲 class: 
[MX4]2+
MLXZ class (ENC, equivalent neutral class): 
MX2Z2