4-coordinate: tetrahedron (T-4)

[Ta(Cl)(NCy₂)₂]₂

Formula Unicode styled: 
[Ta(Cl)(NCy₂)₂]₂
Compound name(s): 
bis-[chloro-bis(bis(cyclohexyl)amido)-tantalum(Ta—Ta)]
Central atom: 
Tantalum
Attached groups: 
Cl (chloro)
NCy₂ (dicyclohexylamino: planar)
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: 13
Summary of calculated classifications: 
Ta«V4C4OIIIE13B6Z0X4L2»
[MLXZ]𝘲 class: 
[MX4L2]
MLXZ class (ENC, equivalent neutral class): 
MX4L2

[Mo{Si(SiMe₃)₃}(NMe₂)₂]₂

Formula Unicode styled: 
[Mo{Si(SiMe₃)₃}(NMe₂)₂]₂
Compound name(s): 
bis-[bis-dimethylamino-(tris(trimethylsilyl)-silyl)-molybdenum(Mo≡Mo)]
Central atom: 
Molybdenum
Attached groups: 
Si(SiMe₃)₃ (tris-trimethylsilyl-silyl)
NMe₂ (dimethylamino: planar)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 6
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 16
Summary of calculated classifications: 
Mo«V6C4OIIIE16B8Z0X6L2»
[MLXZ]𝘲 class: 
[MX6L2]
MLXZ class (ENC, equivalent neutral class): 
MX6L2

[Mo(Tol-p)(NMe₂)₂]₂

Formula Unicode styled: 
[Mo(Tol-p)(NMe₂)₂]₂
Compound name(s): 
bis-[(p-Tolyl)-bis(dimethylamido)-molybdenum(Mo≡Mo)]
Central atom: 
Molybdenum
Attached groups: 
Tol-p (p-tolyl)
NMe₂ (dimethylamino: planar)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 6
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 16
Summary of calculated classifications: 
Mo«V6C4OIIIE16B8Z0X6L2»
[MLXZ]𝘲 class: 
[MX6L2]
MLXZ class (ENC, equivalent neutral class): 
MX6L2

[Mo(SMes)₃]₂

Formula Unicode styled: 
[Mo(SMes)₃]₂
Compound name(s): 
bis-[tris(Mesitylthiolato-S)-molybdenum(Mo≡Mo)]
Central atom: 
Molybdenum
Attached groups: 
SMes (mesitylthio)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 6
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 12
Summary of calculated classifications: 
Mo«V6C4OIIIE12B6Z0L0X6»
[MLXZ]𝘲 class: 
[MX6]
MLXZ class (ENC, equivalent neutral class): 
MX6

[Mo(SBuᵗ)(NMe₂)₂]₂

Formula Unicode styled: 
[Mo(SBuᵗ)(NMe₂)₂]₂
Compound name(s): 
bis-[(t-Butylthio)-bis(dimethylamino)-molybdenum(Mo≡Mo)]
Central atom: 
Molybdenum
Attached groups: 
SBuᵗ (t-butylthio)
NMe₂ (dimethylamino: planar)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 6
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 16
Summary of calculated classifications: 
Mo«V6C4OIIIE16B8Z0X6L2»
[MLXZ]𝘲 class: 
[MX6L2]
MLXZ class (ENC, equivalent neutral class): 
MX6L2

[Mo(OSiMe₃)₃(NHMe₂)]₂

Formula Unicode styled: 
[Mo(OSiMe₃)₃(NHMe₂)]₂
Compound name(s): 
bis-[(Dimethylamine)-tris(trimethylsiloxide)-molybdenum(Mo≡Mo)]
Central atom: 
Molybdenum
Attached groups: 
OSiMe₃ (trimethylsiloxy)
NHMe₂ (dimethylamine)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 6
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 14
Summary of calculated classifications: 
Mo«V6C4OIIIE14B7Z0X6L1»
[MLXZ]𝘲 class: 
[MX6L1]
MLXZ class (ENC, equivalent neutral class): 
MX6L1

[Mo(OCH₂Buᵗ)₂(Acac)]₂

Formula Unicode styled: 
[Mo(OCH₂Buᵗ)₂(Acac)]₂
Compound name(s): 
bis-[(Acetylacetonato-O,O')-bis(neopentoxy)-molybdenum(Mo≡Mo)]
Central atom: 
Molybdenum
Attached groups: 
OCH₂Buᵗ (neopentoxy)
Acac (acetylacetonato)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 6
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 14
Summary of calculated classifications: 
Mo«V6C4OIIIE14B7Z0X6L1»
[MLXZ]𝘲 class: 
[MX6L1]
MLXZ class (ENC, equivalent neutral class): 
MX6L1

[Mo(OBuᵗ)₂(μ₂-O₂CPh)]₂

Formula Unicode styled: 
[Mo(OBuᵗ)₂(μ₂-O₂CPh)]₂
Compound name(s): 
bis-[(μ₂-Benzoato)-bis(t-butyloxy)-molybdenum(Mo≡Mo)]
Central atom: 
Molybdenum
Attached groups: 
OBuᵗ (t-butyloxy)
O₂CPh (μ₂-benzoato)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 6
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 14
Summary of calculated classifications: 
Mo«V6C4OIIIE14B7Z0X6L1»
[MLXZ]𝘲 class: 
[MX6L1]
MLXZ class (ENC, equivalent neutral class): 
MX6L1

[Mo(NMe₂)₃]₂

Formula Unicode styled: 
[Mo(NMe₂)₃]₂
Compound name(s): 
bis-[tris(Dimethylamido)-molybdenum(Mo≡Mo)]
Central atom: 
Molybdenum
Attached groups: 
NMe₂ (dimethylamino: planar)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 6
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 18
Summary of calculated classifications: 
Mo«V6C4OIIIE18B9Z0X6L3»
[MLXZ]𝘲 class: 
[MX6L3]
MLXZ class (ENC, equivalent neutral class): 
MX6L3

[Mo(Et)(NMe₂)₂]₂

Formula Unicode styled: 
[Mo(Et)(NMe₂)₂]₂
Compound name(s): 
bis-[ethyl-bis(N,N-dimethylamino)-molybdenum(Mo≡Mo)]
Central atom: 
Molybdenum
Attached groups: 
Et (ethyl)
NMe₂ (dimethylamino: planar)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 6
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 16
Summary of calculated classifications: 
Mo«V6C4OIIIE16B8Z0X6L2»
[MLXZ]𝘲 class: 
[MX6L2]
MLXZ class (ENC, equivalent neutral class): 
MX6L2

[Mo(Cl)(NMe₂)₂]₂

Formula Unicode styled: 
[Mo(Cl)(NMe₂)₂]₂
Compound name(s): 
bis-[chloro-bis(dimethylamido)molybdenum(Mo≡Mo)]
Central atom: 
Molybdenum
Attached groups: 
Cl (chloro)
NMe₂ (dimethylamino: planar)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 6
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 16
Summary of calculated classifications: 
Mo«V6C4OIIIE16B8Z0X6L2»
[MLXZ]𝘲 class: 
[MX6L2]
MLXZ class (ENC, equivalent neutral class): 
MX6L2

[Mo(CH₂SiMe₃)₂(OBuᵗ)]₂

Formula Unicode styled: 
[Mo(CH₂SiMe₃)₂(OBuᵗ)]₂
Compound name(s): 
bis-[(t-Butoxy)-bis(trimethylsilylmethyl)-molybdenum(Mo≡Mo)]
Central atom: 
Molybdenum
Attached groups: 
CH₂SiMe₃ (trimethylsilylmethyl)
OBuᵗ (t-butyloxy)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 6
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 12
Summary of calculated classifications: 
Mo«V6C4OIIIE12B6Z0L0X6»
[MLXZ]𝘲 class: 
[MX6]
MLXZ class (ENC, equivalent neutral class): 
MX6

[Mo(Bz)(NMe₂)₂]₂

Formula Unicode styled: 
[Mo(Bz)(NMe₂)₂]₂
Compound name(s): 
bis-[benzyl-bis(dimethylamido)-molybdenum(Mo≡Mo)]
Central atom: 
Molybdenum
Attached groups: 
Bz (phenylmethanido-κC)
NMe₂ (dimethylamino: planar)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 6
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 16
Summary of calculated classifications: 
Mo«V6C4OIIIE16B8Z0X6L2»
[MLXZ]𝘲 class: 
[MX6L2]
MLXZ class (ENC, equivalent neutral class): 
MX6L2

[Hf{N(SiHMe₂)₂}₄]

Formula Unicode styled: 
[Hf{N(SiHMe₂)₂}₄]
Compound name(s): 
tetrakis(bis(Dimethylsilyl)amido)-hafnium
Central atom: 
Hafnium
Attached groups: 
N(SiHMe₂)₂ (bis(dimethylsilyl)amino: planar)
Charge on central atom: 
0
Compound type: 
Molecular
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: 16
Summary of calculated classifications: 
Hf«V4C4OIVE16B8Z0X4L4»
[MLXZ]𝘲 class: 
[MX4L4]
MLXZ class (ENC, equivalent neutral class): 
MX4L4

[Cr(Cl)₂(O)₂]

Formula Unicode styled: 
[Cr(Cl)₂(O)₂]
Compound name(s): 
Dichloro-dioxo-chromium
Central atom: 
Chromium
Attached groups: 
Cl (chloro)
(O)₂ (dioxo C₂ᵥ X₄L₂ Ⓢ)
Charge on central atom: 
0
Compound type: 
Molecular
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

catena–1D-[V(O)₂(μ₂–O)]⊖

Formula Unicode styled: 
catena–1D-[V(O)₂(μ₂–O)]⊖
Compound name(s): 
catena-[(μ₂-oxo)-dioxo-vanadium(1-)]
Central atom: 
Vanadium
Attached groups: 
O (oxo X₂)
O (μ₂–oxo X+X)
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: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 12
Summary of calculated classifications: 
V«V5C4OVE12B6Z0L0X6»⊖
[MLXZ]𝘲 class: 
[MX6]-
MLXZ class (ENC, equivalent neutral class): 
MX5L1

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

[Sr{N(SiMe₃)₂}₂(Thf)₂]

Formula Unicode styled: 
[Sr{N(SiMe₃)₂}₂(Thf)₂]
Compound name(s): 
bis(Tetrahydrofuran-O)-bis(bis(trimethylsilyl)amino)-strontium
Central atom: 
Strontium
Attached groups: 
N(SiMe₃)₂ (bis(trimethylsilyl)amino)
Thf (tetrahydrofuran)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 2
Oxidation Number (ON) (Roman numerals): 
ON: (II)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Sr«V2C4OIIE8B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2

[K₂(Te)]

Formula Unicode styled: 
[K₂(Te)]
Compound name(s): 
tellurido-dipotassium|dipotassium telluride
Central atom: 
Potassium
Attached groups: 
Te (tellurido)
Charge on central atom: 
Compound type: 
Lattice
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 1
Oxidation Number (ON) (Roman numerals): 
ON: (I)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 0
Summary of calculated classifications: 
K«V1C4OI»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class): 

[K₂(Se)]

Formula Unicode styled: 
[K₂(Se)]
Compound name(s): 
selenido dipotassium|dipotassium selenide
Central atom: 
Potassium
Attached groups: 
Se (selenido)
Charge on central atom: 
Compound type: 
Lattice
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 1
Oxidation Number (ON) (Roman numerals): 
ON: (I)
Coordination Number (CN, sum of attached group denticities): 
CN: 4
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 0
Summary of calculated classifications: 
K«V1C4OI»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class):