C≡CH (ethynyl)

mer,trans–[Tc(C≡CH)(CO)₃(PPh₃)₂]

Formula Unicode styled: 
mer,trans–[Tc(C≡CH)(CO)₃(PPh₃)₂]
Compound name(s): 
tricarbonyl-(ethynyl)-bis(triphenylphosphine)-technetium
Central atom: 
Technetium
Attached groups: 
C≡CH (ethynyl)
CO (carbonyl)
PPh₃ (triphenylphosphane)
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: 6
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 18
Summary of calculated classifications: 
Tc«V1C6OIE18B6Z0X1L5»
[MLXZ]𝘲 class: 
[MX1L5]
MLXZ class (ENC, equivalent neutral class): 
MX1L5

[C(OC{O}Ph-κO)(≡CH)]

Formula Unicode styled: 
[C(OC{O}Ph-κO)(≡CH)]
Compound name(s): 
Ethynyl benzoate
Central atom: 
Oxygen
Attached groups: 
COPh (benzoyl)
C≡CH (ethynyl)
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: 
O«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

[Cs(C≡CH)]

Formula Unicode styled: 
[Cs(C≡CH)]
Compound name(s): 
ethynyl-caesium
caesium hydrogen acetylide
Central atom: 
Caesium
Attached groups: 
C≡CH (ethynyl)
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: 6
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 0
Summary of calculated classifications: 
Cs«V1C6OI»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class): 

[Cu(C≡CH)₃]⊖

Formula Unicode styled: 
[Cu(C≡CH)₃]⊖
Compound name(s): 
triethynyl-copper(1-)
Central atom: 
Copper
Attached groups: 
C≡CH (ethynyl)
Charge on central atom: 
-1
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: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 15
Summary of calculated classifications: 
Cu«V2C3OIIE15B3Z0L0X3»⊖
[MLXZ]𝘲 class: 
[MX3]-
MLXZ class (ENC, equivalent neutral class): 
MX2L1

cis–[Au(C≡CH)(Me)₂(PPh₃)]

Formula Unicode styled: 
cis–[Au(C≡CH)(Me)₂(PPh₃)]
Compound name(s): 
Dimethyl-ethynyl-triphenylphosphine-gold
Central atom: 
Gold
Attached groups: 
C≡CH (ethynyl)
Me (methyl)
PPh₃ (triphenylphosphane)
Charge on central atom: 
0
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: 16
Summary of calculated classifications: 
Au«V3C4OIIIE16B4Z0X3L1»
[MLXZ]𝘲 class: 
[MX3L1]
MLXZ class (ENC, equivalent neutral class): 
MX3L1

[Au(C≡CH)(PMePh₂)]

Formula Unicode styled: 
[Au(C≡CH)(PMePh₂)]
Compound name(s): 
(Diphenyl(methyl)phosphine)-ethynyl-gold
Central atom: 
Gold
Attached groups: 
C≡CH (ethynyl)
PMePh₂ (methyldiphenylphosphane)
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: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 14
Summary of calculated classifications: 
Au«V1C2OIE14B2Z0X1L1»
[MLXZ]𝘲 class: 
[MX1L1]
MLXZ class (ENC, equivalent neutral class): 
MX1L1

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: 
Ruthenium
Attached groups: 
C≡CH (ethynyl)
CO (carbonyl)
PEt₃ (triethylphosphane)
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: 6
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 18
Summary of calculated classifications: 
Ru«V2C6OIIE18B6Z0X2L4»
[MLXZ]𝘲 class: 
[MX2L4]
MLXZ class (ENC, equivalent neutral class): 
MX2L4

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: 
Ruthenium
Attached groups: 
C≡CH (ethynyl)
CNBuᵗ (t-butyl isocyanide)
PPh₃ (triphenylphosphane)
Charge on central atom: 
1
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: 6
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 18
Summary of calculated classifications: 
Ru«V2C6OIIE18B6Z0X1L5»⊕
[MLXZ]𝘲 class: 
[MX1L5]+
MLXZ class (ENC, equivalent neutral class): 
MX2L4

cis,cis,trans–[Ru(C≡CH)(Cl)(Dppm-κ²P)₂]

Formula Unicode styled: 
cis,cis,trans–[Ru(C≡CH)(Cl)(Dppm-κ²P)₂]
Compound name(s): 
Acetylide-chloro-bis(bis(diphenylphosphino)methane)-ruthenium
Central atom: 
Ruthenium
Attached groups: 
C≡CH (ethynyl)
Cl (chloro)
Dppm (bis-(diphenylphosphino)methane-κ²P)
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: 6
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 18
Summary of calculated classifications: 
Ru«V2C6OIIE18B6Z0X2L4»
[MLXZ]𝘲 class: 
[MX2L4]
MLXZ class (ENC, equivalent neutral class): 
MX2L4

[Fe(C≡CH)(Dppe-κ²P)(Cp*)]

Formula Unicode styled: 
[Fe(C≡CH)(Dppe-κ²P)(Cp*)]
Compound name(s): 
(1,2-bis(Diphenylphosphino)ethane)-(ethynyl)-(η⁵-pentamethyl-cyclopentadienyl)-iron
Central atom: 
Iron
Attached groups: 
C≡CH (ethynyl)
Dppe (1,2-bis-(diphenylphosphino)ethane-κ²P)
Cp* (η⁵-pentamethylcyclopentadienyl)
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: 6
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 18
Summary of calculated classifications: 
Fe«V2C6OIIE18B6Z0X2L4»
[MLXZ]𝘲 class: 
[MX2L4]
MLXZ class (ENC, equivalent neutral class): 
MX2L4

[Fe(C≡CH)(CO)₂(Cp*)]

Formula Unicode styled: 
[Fe(C≡CH)(CO)₂(Cp*)]
Compound name(s): 
Dicarbonyl-(η⁵-pentamethyl-cyclopentadienyl)-ethynyl-iron
Central atom: 
Iron
Attached groups: 
C≡CH (ethynyl)
CO (carbonyl)
Cp* (η⁵-pentamethylcyclopentadienyl)
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: 6
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 18
Summary of calculated classifications: 
Fe«V2C6OIIE18B6Z0X2L4»
[MLXZ]𝘲 class: 
[MX2L4]
MLXZ class (ENC, equivalent neutral class): 
MX2L4

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: 
Cobalt
Attached groups: 
C≡CH (ethynyl)
Tpp (tetraphenylporphyrin)
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: 6
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 17
Summary of calculated classifications: 
Co«V4C6OIVE17B6Z0X4L2»
[MLXZ]𝘲 class: 
[MX4L2]
MLXZ class (ENC, equivalent neutral class): 
MX4L2

axial–[Co(C≡CH)(PMe₃)₄]

Formula Unicode styled: 
axial–[Co(C≡CH)(PMe₃)₄]
Compound name(s): 
Ethynyl-tetrakis(trimethylphosphine)-cobalt
Central atom: 
Cobalt
Attached groups: 
C≡CH (ethynyl)
PMe₃ (trimethylphosphane)
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: 5
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 18
Summary of calculated classifications: 
Co«V1C5OIE18B5Z0X1L4»
[MLXZ]𝘲 class: 
[MX1L4]
MLXZ class (ENC, equivalent neutral class): 
MX1L4

[Ni(C≡CH)(PPh₃)(Cp)]

Formula Unicode styled: 
[Ni(C≡CH)(PPh₃)(Cp)]
Compound name(s): 
(η⁵₋Cyclopentadienyl)-(ethynyl)-(triphenylphosphine)-nickel
Central atom: 
Nickel
Attached groups: 
C≡CH (ethynyl)
PPh₃ (triphenylphosphane)
Cp (η⁵-cyclopentadienyl)
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: 5
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 18
Summary of calculated classifications: 
Ni«V2C5OIIE18B5Z0X2L3»
[MLXZ]𝘲 class: 
[MX2L3]
MLXZ class (ENC, equivalent neutral class): 
MX2L3

[S(C≡CH)(Ph)]

Formula Unicode styled: 
[S(C≡CH)(Ph)]
Compound name(s): 
Phenylthioacetylene
Central atom: 
Sulfur
Attached groups: 
C≡CH (ethynyl)
Ph (phenyl)
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: 
S«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

[S(C≡CH)(CPh₃)]

Formula Unicode styled: 
[S(C≡CH)(CPh₃)]
Compound name(s): 
Triphenylmethylthioethyne
Central atom: 
Sulfur
Attached groups: 
C≡CH (ethynyl)
CPh₃ (trityl)
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: 
S«V2C2O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

[Si(C≡CH)(Ph)₃]

Formula Unicode styled: 
[Si(C≡CH)(Ph)₃]
Compound name(s): 
Triphenylsilylacetylene
Central atom: 
Silicon
Attached groups: 
C≡CH (ethynyl)
Ph (phenyl)
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: 8
Summary of calculated classifications: 
Si«V4C4OIVE8B4Z0L0X4»
[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: 
Silicon
Attached groups: 
C≡CH (ethynyl)
Me (methyl)
Ph (phenyl)
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(C≡CH)(Me)₃]

Formula Unicode styled: 
[Si(C≡CH)(Me)₃]
Compound name(s): 
(Trimethylsilyl)acetylene
Central atom: 
Silicon
Attached groups: 
C≡CH (ethynyl)
Me (methyl)
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: 8
Summary of calculated classifications: 
Si«V4C4OIVE8B4Z0L0X4»
[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: 
Silicon
Attached groups: 
C≡CH (ethynyl)
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: 8
Summary of calculated classifications: 
Si«V4C4OIVE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4