6-coordinate: ④-●-2 piano stool

[Zr(μ₂-OSiPh₃)(η⁷-C₇H₇)]₂

Formula Unicode styled: 
[Zr(μ₂-OSiPh₃)(η⁷-C₇H₇)]₂
Compound name(s): 
bis-[(μ₂-Triphenylsilanolato)-(η⁷-cycloheptatrienyl)-zirconium]
Central atom: 
Zirconium
Attached groups: 
OSiPh₃ (μ₂-triphenylsiloxy)
C₇H₇ (η⁷-cycloheptatrienyl X₃L₂)
Charge on central atom: 
0
Compound type: 
Oligomer
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: 14
Summary of calculated classifications: 
Zr«V4C6OIVE14B7Z0X4L3»
[MLXZ]𝘲 class: 
[MX4L3]
MLXZ class (ENC, equivalent neutral class): 
MX4L3

[Zr(μ₂-NXy){η⁸-C₈H₆(SiMe₃)₂}]₂

Formula Unicode styled: 
[Zr(μ₂-NXy){η⁸-C₈H₆(SiMe₃)₂}]₂
Compound name(s): 
bis-[(μ₂-2,6-dimethylphenylamido-N,N)-(η⁸-1,4-bis(trimethylsilyl)cyclooctatetraene)-zirconium]
Central atom: 
Zirconium
Attached groups: 
NXy (μ₂-xylylimino X₂L)
C₈H₆(SiMe₃)₂ (η⁸-bistrimethylsilyl-cyclooctatetraene)
Charge on central atom: 
0
Compound type: 
Oligomer
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: 16
Summary of calculated classifications: 
Zr«V4C6OIVE16B8Z0X4L4»
[MLXZ]𝘲 class: 
[MX4L4]
MLXZ class (ENC, equivalent neutral class): 
MX4L4

[Sm(OC₆H₃Mes₂-2,6)(Thf)(η⁸-Cot)]

Formula Unicode styled: 
[Sm(OC₆H₃Mes₂-2,6)(Thf)(η⁸-Cot)]
Compound name(s): 
(η⁸-Cyclo-octatetraenyl)-(2,6-dimesitylphenyl)-tetrahydrofuran-samarium
Central atom: 
Samarium
Attached groups: 
OC₆H₃Mes₂-2,6 (dimesitylphenoxy-2,6)
Thf (tetrahydrofuran)
Cot (η⁸-cyclooctatetraene)
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: 6
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 19
Summary of calculated classifications: 
Sm«V3C6OIIIE19B7Z0X3L4»
[MLXZ]𝘲 class: 
[MX3L4]
MLXZ class (ENC, equivalent neutral class): 
MX3L4