4-coordinate: tetrahedron (T-4)

[Ca{CH(SiMe₃)₂}₂(Diox-κO)₂]

Formula Unicode styled: 
[Ca{CH(SiMe₃)₂}₂(Diox-κO)₂]
Compound name(s): 
bis(1,4-Dioxane-O)-bis(bis(trimethylsilyl)methyl)-calcium
Central atom: 
Calcium
Attached groups: 
CH(SiMe₃)₂ (bistrimethylsilylmethyl)
Diox (dioxane-κO)
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: 
Ca«V2C4OIIE8B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2

[Ca{C(SiHMe₂)₃}₂(Thf)₂]

Formula Unicode styled: 
[Ca{C(SiHMe₂)₃}₂(Thf)₂]
Compound name(s): 
bis(tetrahydrofuran)-bis(tris(dimethylsilyl)methyl)-calcium
Central atom: 
Calcium
Attached groups: 
C(SiHMe₂)₃ (tris{dimethylsilyl}methyl)
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: 
Ca«V2C4OIIE8B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2

[Rb₂(Se)]

Formula Unicode styled: 
[Rb₂(Se)]
Compound name(s): 
selenido-dirubidium|dirubidium selenide
Central atom: 
Rubidium
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: 
Rb«V1C4OI»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class): 

[Rb₂(S₂)]

Formula Unicode styled: 
[Rb₂(S₂)]
Compound name(s): 
persulphido-dirubidium|dirubidium persulphide|persulfido-dirubidium|dirubidium persulfide
Central atom: 
Rubidium
Attached groups: 
S₂ (disulfanediyl-κ²S)
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: 
Rb«V1C4OI»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class): 

[Rb₂(S)]

Formula Unicode styled: 
[Rb₂(S)]
Compound name(s): 
sulphido-dirubidium|dirubidium sulphide|sulfido-dirubidium|dirubidium sulfide
Central atom: 
Rubidium
Attached groups: 
S (thio)
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: 
Rb«V1C4OI»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class): 

[Rb₂(O₂)]

Formula Unicode styled: 
[Rb₂(O₂)]
Compound name(s): 
peroxo-dirubidium|dirubidium peroxide
Central atom: 
Rubidium
Attached groups: 
O₂ (peroxo)
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: 
Rb«V1C4OI»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class): 

[Rb₂(O)]

Formula Unicode styled: 
[Rb₂(O)]
Compound name(s): 
Oxo-dirubidium|dirubidium oxide
Central atom: 
Rubidium
Attached groups: 
O (oxo X₂)
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: 
Rb«V1C4OI»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class): 

[Na₂(C≡C)]

Formula Unicode styled: 
[Na₂(C≡C)]
Compound name(s): 
acetylido-disodium
disodium acetylide
Central atom: 
Sodium
Attached groups: 
C≡C (acetylido)
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: 
Na«V1C4OI»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class): 

[Na(SiBuᵗ₃)(Pmdta-κ³N)]

Formula Unicode styled: 
[Na(SiBuᵗ₃)(Pmdta-κ³N)]
Compound name(s): 
(Tri-t-butylsilyl)-pentamethyldiethylenetriamine-sodium
Central atom: 
Sodium
Attached groups: 
SiBuᵗ₃ (tri-t-butylsilyl)
Pmdta (pentamethyldiethylenetriamine-κ³N)
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: 8
Summary of calculated classifications: 
Na«V1C4OIE8B4Z0X1L3»
[MLXZ]𝘲 class: 
[MX1L3]
MLXZ class (ENC, equivalent neutral class): 
MX1L3

[Na(OPPh₃)₃(Thf)]⊕

Formula Unicode styled: 
[Na(OPPh₃)₃(Thf)]⊕
Compound name(s): 
Tetrahydrofuran-tris(triphenylphosphine oxide)-sodium(1+)
Central atom: 
Sodium
Attached groups: 
OPPh₃ (triphenylphosphane oxide)
Thf (tetrahydrofuran)
Charge on central atom: 
1
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: 8
Summary of calculated classifications: 
Na«V1C4OIE8B4Z0X0L4»⊕
[MLXZ]𝘲 class: 
[ML4]+
MLXZ class (ENC, equivalent neutral class): 
MX1L3

[Na(OEt₂)₄]⊕

Formula Unicode styled: 
[Na(OEt₂)₄]⊕
Compound name(s): 
tetrakis(Diethyl ether-O)-sodium(1+)
Central atom: 
Sodium
Attached groups: 
OEt₂ (diethylether)
Charge on central atom: 
1
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: 8
Summary of calculated classifications: 
Na«V1C4OIE8B4Z0X0L4»⊕
[MLXZ]𝘲 class: 
[ML4]+
MLXZ class (ENC, equivalent neutral class): 
MX1L3

network–[Mg(μ₄-Se)]

Formula Unicode styled: 
network–[Mg(μ₄-Se)]
Compound name(s): 
selenido-magnesium
magnesium selenide
magnesium monoselenide
Central atom: 
Magnesium
Attached groups: 
Se (μ₄-seleno X₂L₂)
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: 
Mg«V2C4OIIE8B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2

[Na(I)(NHPPh₃)₃]

Formula Unicode styled: 
[Na(I)(NHPPh₃)₃]
Compound name(s): 
Iodo-tris(triphenylphosphineimine)-sodium
Central atom: 
Sodium
Attached groups: 
I (iodo)
NHPPh₃ (triphenylphosphane-hydrido-nitride)
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: 8
Summary of calculated classifications: 
Na«V1C4OIE8B4Z0X1L3»
[MLXZ]𝘲 class: 
[MX1L3]
MLXZ class (ENC, equivalent neutral class): 
MX1L3

[Mg₃(N)₂]

Formula Unicode styled: 
[Mg₃(N)₂]
Compound name(s): 
dinitrido trimagnesium|trimagnesium dinitride
Central atom: 
Magnesium
Attached groups: 
N (nitrido; ≡N)
Charge on central atom: 
Compound type: 
Lattice
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: 0
Summary of calculated classifications: 
Mg«V2C4OII»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class): 

[Mg{N(SiMe₃)₂}₂(NC₅H₄Me)₂]

Formula Unicode styled: 
[Mg{N(SiMe₃)₂}₂(NC₅H₄Me)₂]
Compound name(s): 
bis(4-Picoline)-bis(bis(trimethylsilyl)amido)-magnesium
Central atom: 
Magnesium
Attached groups: 
N(SiMe₃)₂ (bis(trimethylsilyl)amino)
NC₅H₄Me (4-methylpyridine)
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: 
Mg«V2C4OIIE8B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2

[Mg(CHMePh)₂(OEt₂)₂]

Formula Unicode styled: 
[Mg(CHMePh)₂(OEt₂)₂]
Compound name(s): 
bis-Ethoxyethane)-bis-(1-phenylethyl)-magnesium
Central atom: 
Magnesium
Attached groups: 
CHMePh (1-phenylethyl-κC)
OEt₂ (diethylether)
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: 
Mg«V2C4OIIE8B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2

network–[Mg(μ₄-Te)]

Formula Unicode styled: 
network–[Mg(μ₄-Te)]
Compound name(s): 
telluro-magnesium
magnesium telluride
Central atom: 
Magnesium
Attached groups: 
Te (μ₄-telluro X₂L₂)
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: 
Mg«V2C4OIIE8B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2

[Mg(SeC₆H₂Buᵗ₃-2,4,6)₂(Thf)₂]

Formula Unicode styled: 
[Mg(SeC₆H₂Buᵗ₃-2,4,6)₂(Thf)₂]
Compound name(s): 
bis((2,4,6-Tri-t-butylphenylselenato)-tetrahydrofuran)-magnesium
Central atom: 
Magnesium
Attached groups: 
SeC₆H₂Buᵗ₃-2,4,6 (tri-t-butylphenylseleno)
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: 
Mg«V2C4OIIE8B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2

[Mg(OC₆H₃Ph₂-2,6)₂(OEt₂)₂]

Formula Unicode styled: 
[Mg(OC₆H₃Ph₂-2,6)₂(OEt₂)₂]
Compound name(s): 
bis(2,6-diphenylphenolato)-bis(diethyl ether)-magnesium
Central atom: 
Magnesium
Attached groups: 
OC₆H₃Ph₂-2,6 (diphenylphenoxy-2,6)
OEt₂ (diethylether)
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: 
Mg«V2C4OIIE8B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2

[Mg(NBz₂)₂(TMEDA-κ²N)]

Formula Unicode styled: 
[Mg(NBz₂)₂(TMEDA-κ²N)]
Compound name(s): 
bis(Dibenzylamido)-(1,2-bis(dimethylamino)ethane)-magnesium
Central atom: 
Magnesium
Attached groups: 
NBz₂ (dibenzylamino)
TMEDA (tetramethylethylenediamine-κ²N)
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: 
Mg«V2C4OIIE8B4Z0X2L2»
[MLXZ]𝘲 class: 
[MX2L2]
MLXZ class (ENC, equivalent neutral class): 
MX2L2