≡CH (methylidyne)

[Se₃(Ph)₃(μ₃-CH)]

Formula Unicode styled: 
[Se₃(Ph)₃(μ₃-CH)]
Compound name(s): 
tris(phenylseleno)methane
Central atom: 
Selenium
Attached groups: 
Ph (phenyl)
≡CH (methylidyne)
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: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Se«V2C2OIIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

[In₃(Br)₉(≡CH)]³⊖

Formula Unicode styled: 
[In₃(Br)₉(≡CH)]³⊖
Compound name(s): 
tris(tribromoindium)methane(3-)
Central atom: 
Indium
Attached groups: 
Br (bromo)
≡CH (methylidyne)
Charge on central atom: 
-3
Compound type: 
Molecular
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: 8
Summary of calculated classifications: 
In«V3C4OIIIE8B4Z0L0X4»3⊖
[MLXZ]𝘲 class: 
[MX4]3-
MLXZ class (ENC, equivalent neutral class): 
MX3L1

[U(C≡CH)(Cp)₃]

Formula Unicode styled: 
[U(C≡CH)(Cp)₃]
Compound name(s): 
Tri(cyclopentadienyl)ethynyl-uranium
Central atom: 
Carbon
Attached groups: 
≡CH (methylidyne)
U group (X type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2O-IE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

trans,trans,trans–[Ru(C≡CH)₂(CO)₂(PEt₃)₂]

Formula Unicode styled: 
trans,trans,trans–[Ru(C≡CH)₂(CO)₂(PEt₃)₂]
Compound name(s): 
bis-acetylenyl-dicarbonyl-bis-triethylphosphine-ruthenium
Central atom: 
Carbon
Attached groups: 
≡CH (methylidyne)
Ru group (X type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2O-IE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

trans–[Co(C≡CH)₂(Tpp)]

Formula Unicode styled: 
trans–[Co(C≡CH)₂(Tpp)]
Compound name(s): 
bis-ethynyl--(5,10,15,20-tetraphenylporphyrin)-cobalt
Central atom: 
Carbon
Attached groups: 
≡CH (methylidyne)
Co group (X type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2O-IE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

[Te(C≡CH)(C₆H₄NMe₂)]

Formula Unicode styled: 
[Te(C≡CH)(C₆H₄NMe₂)]
Compound name(s): 
4-(Dimethylamino)phenyl ethynyl tellurium
Central atom: 
Carbon
Attached groups: 
≡CH (methylidyne)
Te group (X type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2O-IE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

[Sn(C≡CH)₂(Ph)₂]

Formula Unicode styled: 
[Sn(C≡CH)₂(Ph)₂]
Compound name(s): 
diethynyl-diphenyl-tin
diethynyldiphenylstannane
Central atom: 
Carbon
Attached groups: 
≡CH (methylidyne)
Sn group (X type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2O-IE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

[Si(C≡CH)₄]

Formula Unicode styled: 
[Si(C≡CH)₄]
Compound name(s): 
tetraethynylsilane
Central atom: 
Carbon
Attached groups: 
≡CH (methylidyne)
Si group (X type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2O-IE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

[Si(C≡CH)(Ph)₃]

Formula Unicode styled: 
[Si(C≡CH)(Ph)₃]
Compound name(s): 
Triphenylsilylacetylene
Central atom: 
Carbon
Attached groups: 
≡CH (methylidyne)
Si group (X type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2O-IE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

[Si(C≡CH)(Me)₃]

Formula Unicode styled: 
[Si(C≡CH)(Me)₃]
Compound name(s): 
(Trimethylsilyl)acetylene
Central atom: 
Carbon
Attached groups: 
≡CH (methylidyne)
Si group (X type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2O-IE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

[Si(C≡CH)(Me)(Ph)]₂

Formula Unicode styled: 
[Si(C≡CH)(Me)(Ph)]₂
Compound name(s): 
1,2-Diethynyl-1,2-dimethyldiphenyldisilane
Central atom: 
Carbon
Attached groups: 
≡CH (methylidyne)
Si group (X type)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2O-IE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

[Se(C≡CH)]⊖

Formula Unicode styled: 
[Se(C≡CH)]⊖
Compound name(s): 
ethynyl-selenium(1-)
Central atom: 
Carbon
Attached groups: 
≡CH (methylidyne)
Se group (X type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2O-IE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

[S(C≡CH)(Ph)]

Formula Unicode styled: 
[S(C≡CH)(Ph)]
Compound name(s): 
Phenylthioacetylene
Central atom: 
Carbon
Attached groups: 
≡CH (methylidyne)
S group (X type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (I)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2OIE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

[S(C≡CH)(CPh₃)]

Formula Unicode styled: 
[S(C≡CH)(CPh₃)]
Compound name(s): 
Triphenylmethylthioethyne
Central atom: 
Carbon
Attached groups: 
≡CH (methylidyne)
S group (X type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (I)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2OIE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

[P(C≡CH)₃]

Formula Unicode styled: 
[P(C≡CH)₃]
Compound name(s): 
Tris(ethynyl)phosphine
Central atom: 
Carbon
Attached groups: 
≡CH (methylidyne)
P group (X type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2O-IE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

[P(C≡CH)₃(O)]

Formula Unicode styled: 
[P(C≡CH)₃(O)]
Compound name(s): 
Tris(ethynyl)phosphine oxide
Central atom: 
Carbon
Attached groups: 
≡CH (methylidyne)
P group (X type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2O-IE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

[P(C≡CH)(Mes)₂]

Formula Unicode styled: 
[P(C≡CH)(Mes)₂]
Compound name(s): 
Ethynyl(dimesityl)phosphine
Central atom: 
Carbon
Attached groups: 
≡CH (methylidyne)
P group (X type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2O-IE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

[Ni(C≡CH)(PPh₃)(Cp)]

Formula Unicode styled: 
[Ni(C≡CH)(PPh₃)(Cp)]
Compound name(s): 
(η⁵₋Cyclopentadienyl)-(ethynyl)-(triphenylphosphine)-nickel
Central atom: 
Carbon
Attached groups: 
≡CH (methylidyne)
Ni group (X type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2O-IE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

[Mo(C≡CH)(CO)₂(η³-C₃H₅)(Phen)]

Formula Unicode styled: 
[Mo(C≡CH)(CO)₂(η³-C₃H₅)(Phen)]
Compound name(s): 
(η-Allyl)-dicarbonyl-(ethynyl)-(1,10-phenanthroline)-molybdenum
Central atom: 
Carbon
Attached groups: 
≡CH (methylidyne)
Mo group (X type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2O-IE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4

mer,trans–[Ru(C≡CH)(CNBuᵗ)₃(PPh₃)₂]⊕

Formula Unicode styled: 
mer,trans–[Ru(C≡CH)(CNBuᵗ)₃(PPh₃)₂]⊕
Compound name(s): 
tris(t-Butylisocyano)-phenylacetylenyl-bis(triphenylphosphine)-ruthenium(1+)
Central atom: 
Carbon
Attached groups: 
≡CH (methylidyne)
Ru group (X type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
C«V4C2O-IE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4