4-coordinate: tetrahedron (T-4)

[Be(Cl)₂(15-crown-5-κ²O)]

Formula Unicode styled: 
[Be(Cl)₂(15-crown-5-κ²O)]
Compound name(s): 
dichloro-(15-crown-5)-beryllium
Central atom: 
Beryllium
Attached groups: 
Cl (chloro)
15-crown-5 (15-crown-5-κ²O)
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: 
Be«V2C4OIIE8B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2

network–[TbH₂]

Formula Unicode styled: 
network–[TbH₂]
Compound name(s): 
Terbium dihydride
Central atom: 
Hydrogen
Attached groups: 
Tb group (X type)
Charge on central atom: 
0
Compound type: 
Network
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: 2
Summary of calculated classifications: 
H«V1C4O-IE2B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

network–[Pr(μ₄-H)₂]

Formula Unicode styled: 
network–[Pr(μ₄-H)₂]
Compound name(s): 
Praseodymium dihydride
Central atom: 
Hydrogen
Attached groups: 
Pr group (X type)
Charge on central atom: 
0
Compound type: 
Network
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 1
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 2
Summary of calculated classifications: 
H«V1C1O-IE2B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

network–[Nd(μ₄-H)₄]

Formula Unicode styled: 
network–[Nd(μ₄-H)₄]
Compound name(s): 
Neodymium dihydride
Central atom: 
Hydrogen
Attached groups: 
Nd group (X type)
Charge on central atom: 
0
Compound type: 
Network
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 1
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 2
Summary of calculated classifications: 
H«V1C1O-IE2B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

network–[Ho(μ₄-H)₄]

Formula Unicode styled: 
network–[Ho(μ₄-H)₄]
Compound name(s): 
Holmium dihydride
Central atom: 
Hydrogen
Attached groups: 
Ho group (X type)
Charge on central atom: 
0
Compound type: 
Network
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 1
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 2
Summary of calculated classifications: 
H«V1C1O-IE2B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

network–[Tm(μ₄-H)₂]

Formula Unicode styled: 
network–[Tm(μ₄-H)₂]
Compound name(s): 
Thulium dihydride
Central atom: 
Hydrogen
Attached groups: 
Tm group (X type)
Charge on central atom: 
0
Compound type: 
Network
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 1
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 2
Summary of calculated classifications: 
H«V1C1O-IE2B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

network–[Np(μ₄-H)₂]

Formula Unicode styled: 
network–[Np(μ₄-H)₂]
Compound name(s): 
Neptunium dihydride
Central atom: 
Hydrogen
Attached groups: 
Np group (X type)
Charge on central atom: 
0
Compound type: 
Network
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 1
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 2
Summary of calculated classifications: 
H«V1C1O-IE2B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

network–[Pu(μ₄-H)₂]

Formula Unicode styled: 
network–[Pu(μ₄-H)₂]
Compound name(s): 
Plutonium dihydride
Central atom: 
Hydrogen
Attached groups: 
Pu group (X type)
Charge on central atom: 
0
Compound type: 
Network
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 1
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 2
Summary of calculated classifications: 
H«V1C1O-IE2B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

network–[Cm(μ₄-H)₂]

Formula Unicode styled: 
network–[Cm(μ₄-H)₂]
Compound name(s): 
Curium dihydride
Central atom: 
Hydrogen
Attached groups: 
Cm group (X type)
Charge on central atom: 
0
Compound type: 
Network
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: 2
Summary of calculated classifications: 
H«V1C4O-IE2B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

[Am(μ₄-H)₂]

Formula Unicode styled: 
[Am(μ₄-H)₂]
Compound name(s): 
Americium dihydride
Central atom: 
Hydrogen
Attached groups: 
Am group (X type)
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: 
H«V1C4O-I»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class): 

[Bk(μ₄-H)₂]

Formula Unicode styled: 
[Bk(μ₄-H)₂]
Compound name(s): 
Berkelium dihydride
Central atom: 
Hydrogen
Attached groups: 
Bk group (X type)
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: 
H«V1C4O-I»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class): 

network–[La(μ₄-H)₂]

Formula Unicode styled: 
network–[La(μ₄-H)₂]
Compound name(s): 
Lanthanum dihydride
Central atom: 
Hydrogen
Attached groups: 
La group (X type)
Charge on central atom: 
0
Compound type: 
Network
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 1
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 2
Summary of calculated classifications: 
H«V1C1O-IE2B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

network–[Pa(μ₄-H)₃]

Formula Unicode styled: 
network–[Pa(μ₄-H)₃]
Compound name(s): 
Protactinium trihydride
Central atom: 
Hydrogen
Attached groups: 
Pa group (X type)
Charge on central atom: 
0
Compound type: 
Network
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 1
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 2
Summary of calculated classifications: 
H«V1C1O-IE2B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

network–[Ac(μ₄-H)₂]

Formula Unicode styled: 
network–[Ac(μ₄-H)₂]
Compound name(s): 
Actinium dihydride
Central atom: 
Hydrogen
Attached groups: 
Ac group (X type)
Charge on central atom: 
0
Compound type: 
Molecular
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: 2
Summary of calculated classifications: 
H«V1C4O-IE2B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

network–[Zn(μ₂-H)₂]

Formula Unicode styled: 
network–[Zn(μ₂-H)₂]
Compound name(s): 
Zinc Hydride
Central atom: 
Hydrogen
Attached groups: 
Zn group (X type)
Charge on central atom: 
0
Compound type: 
Network
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: 2
Summary of calculated classifications: 
H«V1C4O-IE2B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

network–[Zn(μ₂-H)₂]

Formula Unicode styled: 
network–[Zn(μ₂-H)₂]
Compound name(s): 
Zinc Hydride
Central atom: 
Zinc
Attached groups: 
H (μ₂-hydrido)
Charge on central atom: 
0
Compound type: 
Network
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: 
Zn«V2C4OIIE8B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2

[Cu(H)]

Formula Unicode styled: 
[Cu(H)]
Compound name(s): 
Copper Hydride
Central atom: 
Hydrogen
Attached groups: 
Cu group (X type)
Charge on central atom: 
0
Compound type: 
Network
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: 2
Summary of calculated classifications: 
H«V1C4O-IE2B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

[Cu(H)]

Formula Unicode styled: 
[Cu(H)]
Compound name(s): 
Copper Hydride
Central atom: 
Copper
Attached groups: 
H (hydrido)
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: 
Cu«V1C4OI»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class): 

[Ca(H)₂]

Formula Unicode styled: 
[Ca(H)₂]
Compound name(s): 
dihydrido-calcium
calcium dihydride
Central atom: 
Hydrogen
Attached groups: 
Ca group (X type)
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: 
H«V1C4O-I»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class): 

[Ge(Cl)₂(AsEt₃)₂]²⊕

Formula Unicode styled: 
[Ge(Cl)₂(AsEt₃)₂]²⊕
Compound name(s): 
dichloro-bis(triethylarsane)-germanium(2+)
Central atom: 
Germanium
Attached groups: 
Cl (chloro)
AsEt₃ (triethylarsane)
Charge on central atom: 
2
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: 8
Summary of calculated classifications: 
Ge«V4C4OIVE8B4Z0X2L2»2⊕
[MLXZ]𝘲 class: 
[MX2L2]2+
MLXZ class (ENC, equivalent neutral class): 
MX4