HC≡CH (ethyne)

[Ru(HC≡CH)(PMe₂Ph)₂(Cp)]⊕

Formula Unicode styled: 
[Ru(HC≡CH)(PMe₂Ph)₂(Cp)]⊕
Compound name(s): 
(η²-Acetylene)-(η⁵-cyclopentadienyl)-bis(dimethylphenylphosphine)-ruthenium(1+)
Central atom: 
Ruthenium
Attached groups: 
HC≡CH (ethyne)
PMe₂Ph (dimethylphenylphosphane)
Cp (η⁵-cyclopentadienyl)
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

[Ni(HC≡CH)(PPh₃)₂]

Formula Unicode styled: 
[Ni(HC≡CH)(PPh₃)₂]
Compound name(s): 
(η²-Ethyne)-bis(triphenylphosphine)-nickel
Central atom: 
Nickel
Attached groups: 
HC≡CH (ethyne)
PPh₃ (triphenylphosphane)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 0
Oxidation Number (ON) (Roman numerals): 
ON: (O)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 16
Summary of calculated classifications: 
Ni«V0C3OOE16B3Z0X0L3»
[MLXZ]𝘲 class: 
[ML3]
MLXZ class (ENC, equivalent neutral class): 
ML3

[Cu(HC≡CH)(Phen)]⊕

Formula Unicode styled: 
[Cu(HC≡CH)(Phen)]⊕
Compound name(s): 
(η²-Ethyne)-(1,10-phenanthroline)-copper(1+)
Central atom: 
Copper
Attached groups: 
HC≡CH (ethyne)
Phen (phenanthroline)
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: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 16
Summary of calculated classifications: 
Cu«V1C3OIE16B3Z0X0L3»⊕
[MLXZ]𝘲 class: 
[ML3]+
MLXZ class (ENC, equivalent neutral class): 
MX1L2

[Cr(CO)(NO)(HC≡CH)(Cp)]

Formula Unicode styled: 
[Cr(CO)(NO)(HC≡CH)(Cp)]
Compound name(s): 
(η-Acetylene)-(η-cyclopentadienyl)-carbonyl-nitrosyl-chromium
Central atom: 
Chromium
Attached groups: 
CO (carbonyl)
NO (nitrosyl, linear)
HC≡CH (ethyne)
Cp (η⁵-cyclopentadienyl)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (O)
Coordination Number (CN, sum of attached group denticities): 
CN: 6
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 18
Summary of calculated classifications: 
Cr«V4C6OOE18B8X2L5Z1»
[MLXZ]𝘲 class: 
[MX2L5Z1]
MLXZ class (ENC, equivalent neutral class): 
MX4L4

[Os(H)(=C=CH₂)(HC≡CH)(PPrⁱ₃)₂]⊕

Formula Unicode styled: 
[Os(H)(=C=CH₂)(HC≡CH)(PPrⁱ₃)₂]⊕
Compound name(s): 
(η-Ethyne)-hydrido-bis(triisopropylphosphine)-(vinylidene)-osmium(1+)
Central atom: 
Osmium
Attached groups: 
H (hydrido)
C=CH₂ (vinylidene, ethynylidene)
HC≡CH (ethyne)
PPrⁱ₃ (triisopropylphosphane)
Charge on central atom: 
1
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: 5
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 16
Summary of calculated classifications: 
Os«V4C5OIVE16B6Z0X3L3»⊕
[MLXZ]𝘲 class: 
[MX3L3]+
MLXZ class (ENC, equivalent neutral class): 
MX4L2