8-coordinate: ④-●-③-1 bent metallocene

[Nb(Cl)(μ₂-Cl)(CO)₂(η⁵-C₅H₄Me)]₂

Formula Unicode styled: 
[Nb(Cl)(μ₂-Cl)(CO)₂(η⁵-C₅H₄Me)]₂
Compound name(s): 
bis-[(μ₂-Chloro)-chloro-dicarbonyl-bis(η⁵-methyl-cyclopentadienyl-niobium]
Central atom: 
Niobium
Attached groups: 
Cl (chloro)
Cl (μ₂-chloro)
CO (carbonyl)
C₅H₄Me (η⁵-methylcyclopentadienyl)
Charge on central atom: 
0
Compound type: 
Oligomer
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 8
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 18
Summary of calculated classifications: 
Nb«V3C8OIIIE18B8Z0X3L5»
[MLXZ]𝘲 class: 
[MX3L5]
MLXZ class (ENC, equivalent neutral class): 
MX3L5

[Ta(Me)(Cp*)(η⁷-C₇H₇)]

Formula Unicode styled: 
[Ta(Me)(Cp*)(η⁷-C₇H₇)]
Compound name(s): 
methyl-(η-pentamethylcyclopentadienyl)-(η-cycloheptatrienyl)-tantalum
Central atom: 
Tantalum
Attached groups: 
Me (methyl)
Cp* (η⁵-pentamethylcyclopentadienyl)
C₇H₇ (η⁷-cycloheptatrienyl X₃L₂)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 5
Oxidation Number (ON) (Roman numerals): 
ON: (V)
Coordination Number (CN, sum of attached group denticities): 
CN: 8
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 18
Summary of calculated classifications: 
Ta«V5C8OVE18B9Z0X5L4»
[MLXZ]𝘲 class: 
[MX5L4]
MLXZ class (ENC, equivalent neutral class): 
MX5L4

[Ta(H)(Cp*)(η⁷-C₇H₇)]

Formula Unicode styled: 
[Ta(H)(Cp*)(η⁷-C₇H₇)]
Compound name(s): 
hydrido-(η-pentamethylcyclopentadienyl)-(η-cycloheptatrienyl)-tantalum
Central atom: 
Tantalum
Attached groups: 
H (hydrido)
Cp* (η⁵-pentamethylcyclopentadienyl)
C₇H₇ (η⁷-cycloheptatrienyl X₃L₂)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 5
Oxidation Number (ON) (Roman numerals): 
ON: (V)
Coordination Number (CN, sum of attached group denticities): 
CN: 8
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 18
Summary of calculated classifications: 
Ta«V5C8OVE18B9Z0X5L4»
[MLXZ]𝘲 class: 
[MX5L4]
MLXZ class (ENC, equivalent neutral class): 
MX5L4

[Ta(Br)(Cp*)(η⁷-C₇H₇)]

Formula Unicode styled: 
[Ta(Br)(Cp*)(η⁷-C₇H₇)]
Compound name(s): 
bromo-(η-pentamethylcyclopentadienyl)-(η-cycloheptatrienyl)-tantalum
Central atom: 
Tantalum
Attached groups: 
Br (bromo)
Cp* (η⁵-pentamethylcyclopentadienyl)
C₇H₇ (η⁷-cycloheptatrienyl X₃L₂)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 5
Oxidation Number (ON) (Roman numerals): 
ON: (V)
Coordination Number (CN, sum of attached group denticities): 
CN: 8
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 18
Summary of calculated classifications: 
Ta«V5C8OVE18B9Z0X5L4»
[MLXZ]𝘲 class: 
[MX5L4]
MLXZ class (ENC, equivalent neutral class): 
MX5L4

[Hf(PMe₃)(Cp)(η⁷-C₇H₇)]

Formula Unicode styled: 
[Hf(PMe₃)(Cp)(η⁷-C₇H₇)]
Compound name(s): 
(trimethylphosphine)-(η-cyclopentadienyl)-(η-cycloheptatrienyl)-hafnium
Central atom: 
Hafnium
Attached groups: 
PMe₃ (trimethylphosphane)
Cp (η⁵-cyclopentadienyl)
C₇H₇ (η⁷-cycloheptatrienyl X₃L₂)
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: 8
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 18
Summary of calculated classifications: 
Hf«V4C8OIVE18B9Z0X4L5»
[MLXZ]𝘲 class: 
[MX4L5]
MLXZ class (ENC, equivalent neutral class): 
MX4L5