7-coordinate (geometry not specified)

[Ac₂(O)₃]

Formula Unicode styled: 
[Ac₂(O)₃]
Compound name(s): 
diactinium trioxide
actinium sesquioxide
Central atom: 
Attached groups: 
Charge on central atom: 
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
Ac«V3C7OIII»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class): 

[Cm₂(O)₃]

Formula Unicode styled: 
[Cm₂(O)₃]
Compound name(s): 
dicurium trioxide
Central atom: 
Attached groups: 
Charge on central atom: 
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
Cm«V3C7OIII»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class): 

[Cm₂(S)₃]

Formula Unicode styled: 
[Cm₂(S)₃]
Compound name(s): 
dicurium trisulfide|Curium sesquisulfide
Central atom: 
Attached groups: 
Charge on central atom: 
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
Cm«V3C7OIII»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class): 

[Cm₂(Te)₃]

Formula Unicode styled: 
[Cm₂(Te)₃]
Compound name(s): 
dicurium tritelluride|Curium sesquitelluride
Central atom: 
Attached groups: 
Charge on central atom: 
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
Cm«V3C7OIII»
[MLXZ]𝘲 class: 
MLXZ class (ENC, equivalent neutral class): 

[Ta(S)(Dedtc)₃]

Formula Unicode styled: 
[Ta(S)(Dedtc)₃]
Compound name(s): 
Sulfido-tris(N,N-diethyldithiocarbamato)-tantalum
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
Ta«V5C7OVE18B9Z0X5L4»
[MLXZ]𝘲 class: 
[MX5L4]
MLXZ class (ENC, equivalent neutral class): 
MX5L4

[Ta(Me)(Ph)(η⁴-C₄H₆)(Cp*)]

Formula Unicode styled: 
[Ta(Me)(Ph)(η⁴-C₄H₆)(Cp*)]
Compound name(s): 
(η-1,3-Butadiene)-methyl-(η-pentamethyl-cyclopentadienyl)-phenyl-tantalum
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
Ta«V3C7OIIIE16B7Z0X3L4»
[MLXZ]𝘲 class: 
[MX3L4]
MLXZ class (ENC, equivalent neutral class): 
MX3L4

[Ta(Me)(Cp*)(η⁷-C₇H₇)]

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

[Ta(I)(η⁴-Cot)(η⁸-Cot)]

Formula Unicode styled: 
[Ta(I)(η⁴-Cot)(η⁸-Cot)]
Compound name(s): 
(η-Cyclooctatetraene)-(η-cyclooctatetraene)-iodo-tantalum
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
Ta«V3C7OIIIE18B8Z0X3L5»
[MLXZ]𝘲 class: 
[MX3L5]
MLXZ class (ENC, equivalent neutral class): 
MX3L5

[Ta(I)(CO)₄(TMEDA-κ²N)]

Formula Unicode styled: 
[Ta(I)(CO)₄(TMEDA-κ²N)]
Compound name(s): 
Tetracarbonyl-iodo-(tetramethylethylenediamine)-tantalum
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
Ta«V1C7OIE18B7Z0X1L6»
[MLXZ]𝘲 class: 
[MX1L6]
MLXZ class (ENC, equivalent neutral class): 
MX1L6

[Ta(I)(CNXy)₆]

Formula Unicode styled: 
[Ta(I)(CNXy)₆]
Compound name(s): 
hexakis(2,6-Dimethylphenylisocyanido)-iodo-tantalum
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
Ta«V1C7OIE18B7Z0X1L6»
[MLXZ]𝘲 class: 
[MX1L6]
MLXZ class (ENC, equivalent neutral class): 
MX1L6

[Ta(H)(Cp*)(η⁷-C₇H₇)]

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

[Ta(H)(CO)₂(Dppe-κ²P)₂]

Formula Unicode styled: 
[Ta(H)(CO)₂(Dppe-κ²P)₂]
Compound name(s): 
Dicarbonyl-hydrido-bis(1,2-bis(diphenylphosphino)ethane-P,P')-tantalum
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
Ta«V1C7OIE18B7Z0X1L6»
[MLXZ]𝘲 class: 
[MX1L6]
MLXZ class (ENC, equivalent neutral class): 
MX1L6

[Ta(Cl)(Me)₃(Tp-κ³N)]

Formula Unicode styled: 
[Ta(Cl)(Me)₃(Tp-κ³N)]
Compound name(s): 
Hydro-tris(1-pyrazolyl)borato)-chlorotrimethyl-tantalum
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
Ta«V5C7OVE14B7Z0X5L2»
[MLXZ]𝘲 class: 
[MX5L2]
MLXZ class (ENC, equivalent neutral class): 
MX5L2

[Ta(Cl)(H)₂(PMe₃)₄]

Formula Unicode styled: 
[Ta(Cl)(H)₂(PMe₃)₄]
Compound name(s): 
Chloro-dihydrido-tetrakis(trimethylphosphine)-tantalum
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
Ta«V3C7OIIIE16B7Z0X3L4»
[MLXZ]𝘲 class: 
[MX3L4]
MLXZ class (ENC, equivalent neutral class): 
MX3L4

[Ta(Cl)(H)₂(OC₆H₃Prⁱ₂-2,6)₂(PMe₂Ph)₂]

Formula Unicode styled: 
[Ta(Cl)(H)₂(OC₆H₃Prⁱ₂-2,6)₂(PMe₂Ph)₂]
Compound name(s): 
Chloro-bis(dimethylphenylphosphine)-bis(2,6-di-isopropylphenoxy)-dihydrido-tantalum
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
Ta«V5C7OVE14B7Z0X5L2»
[MLXZ]𝘲 class: 
[MX5L2]
MLXZ class (ENC, equivalent neutral class): 
MX5L2

[Ta(Cl)₂(Me)₃(PMe₃)₂]

Formula Unicode styled: 
[Ta(Cl)₂(Me)₃(PMe₃)₂]
Compound name(s): 
Dichloro-trimethyl-bis(trimethylphosphine)-tantalum
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
Ta«V5C7OVE14B7Z0X5L2»
[MLXZ]𝘲 class: 
[MX5L2]
MLXZ class (ENC, equivalent neutral class): 
MX5L2

[Ta(Cl)₂(Me)₃(Bpy)]

Formula Unicode styled: 
[Ta(Cl)₂(Me)₃(Bpy)]
Compound name(s): 
(2,2'-Bipyridyl)-dichloro-trimethyl-tantalum
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
Ta«V5C7OVE14B7Z0X5L2»
[MLXZ]𝘲 class: 
[MX5L2]
MLXZ class (ENC, equivalent neutral class): 
MX5L2

[Ta(Cl)(CO)₃(PMe₃)₃]

Formula Unicode styled: 
[Ta(Cl)(CO)₃(PMe₃)₃]
Compound name(s): 
Chloro-tricarbonyl-tris(trimethylphosphine)-tantalum
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
Ta«V1C7OIE18B7Z0X1L6»
[MLXZ]𝘲 class: 
[MX1L6]
MLXZ class (ENC, equivalent neutral class): 
MX1L6

[Ta(Cl)(CO)₂(Dppe-κ²P)₂]

Formula Unicode styled: 
[Ta(Cl)(CO)₂(Dppe-κ²P)₂]
Compound name(s): 
Chloro-dicarbonyl-bis(1,2-bis(diphenylphosphino)ethane)-tantalum
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
Ta«V1C7OIE18B7Z0X1L6»
[MLXZ]𝘲 class: 
[MX1L6]
MLXZ class (ENC, equivalent neutral class): 
MX1L6

[Ta(Cl)(CO)₂(Depe)₂]

Formula Unicode styled: 
[Ta(Cl)(CO)₂(Depe)₂]
Compound name(s): 
Dicarbonyl-chloro-bis(bis(diethylphosphino)ethane)-tantalum
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
Ta«V1C7OIE18B7Z0X1L6»
[MLXZ]𝘲 class: 
[MX1L6]
MLXZ class (ENC, equivalent neutral class): 
MX1L6