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Question
Write the formulas for the following coordination compounds:
A) Tetraammineaquachloridocobalt(III) chloride
B) Pottasium tetrahydroxozincate(II)
C) Pottasium trioxalatoaluminate(III)
D) Dichloridobis(ethane-1,2-diamine)cobalt(III)
E) Tetracarbonylnickel(0)
A) Tetraammineaquachloridocobalt(III) chloride
B) Pottasium tetrahydroxozincate(II)
C) Pottasium trioxalatoaluminate(III)
D) Dichloridobis(ethane-1,2-diamine)cobalt(III)
E) Tetracarbonylnickel(0)
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Solution
A) Formula for the coordination compound
I. When we write the formulas of the coordination complex, first of all, we write the chemical symbol of the central metal atom or ion.
II. After that, we write the ligands formula/notation in alphabetical order.
III. The formula for the entire coordinatio n sphere, whether charged or not is enclosed in square brackets. Polyato mic ligands and ligands abbreviation are also enclosed in parentheses.
IV. At last, counter ion is written outside the coordination sphere, which is estimated from oxidation state calculation of coordination compound, which ultimately tells the number of counter ions outside the brackets
V. If the counter ion is cationic, it should be written before the complex part and if counter ion is anionic, it should be written after the complex part .
Hence, formula of the given coordination compound can be written as:
Tetraammineaquachloridocobalt(III) chloride
⇒[Co(NH3)4(H2O)Cl]Cl2
B) Formula for the coordination compound
I. When we write the formulas of the coordination complex, first of all, we write the chemical symbol of the central metal atom or ion.
II. After that, we write the ligands formula/notation in alphabetical order.
III. The formula for the entire coordinatio n sphere, whether charged or not is enclosed in square brackets. Polyato mic ligands and ligands abbreviation are also enclosed in parentheses.
IV. At last, counter ion is written outside the coordination sphere, which is estimated from oxidation state calculation of coordination compound, which ultimately tells the number of counter ions outside the brackets
V. If the counter ion is cationic, it should be written before the complex part and if counter ion is anionic, it should be written after the complex part .
Hence, formula of the given coordination compound can be written as:
Potassium tetrahydroxozincate(II)
⇒K2[Zn(OH)4]
C) Formula for the coordination compound
I. When we write the formulas of the coordination complex, first of all, we write the chemical symbol of the central metal atom or ion.
II. After that, we write the ligands formula/notation in alphabetical order.
III. The formula for the entire coordinatio n sphere, whether charged or not is enclosed in square brackets. Polyato mic ligands and ligands abbreviation are also enclosed in parentheses.
IV. At last, counter ion is written outside the coordination sphere, which is estimated from oxidation state calculation of coordination compound, which ultimately tells the number of counter ions outside the brackets
V. If the counter ion is cationic, it should be written before the complex part and if counter ion is anionic, it should be written after the complex part .
Hence, formula of the given coordination compound IUPAC can be written as:
Potassium trioxalatoaluminate(III)
⇒K3[Al(C2O4)3]
D) Formula for the coordination compound
I. When we write the formulas of the coordination complex, first of all, we write the chemical symbol of the central metal atom or ion.
II. After that, we write the ligands formula/notation in alphabetical order.
III. The formula for the entire coordinatio n sphere, whether charged or not is enclosed in square brackets. Polyato mic ligands and ligands abbreviation are also enclosed in parentheses.
IV. At last, counter ion is written outside the coordination sphere, which is estimated from oxidation state calculation of coordination compound, which ultimately tells the number of counter ions outside the brackets
V. If the counter ion is cationic, it should be written before the complex part and if counter ion is anionic, it should be written after the complex part .
VI. If the formula of charged coordination entity is to be written without that of counter ion, the charge is indicated outside the square brackets as a right superscript with the number before the sign.
Hence, formula of the given coordination compound can be written as:
Dichloridobis(ethane-1,2diamine)cobalt(III)
⇒[CoCl2(en)2]+
E) Formula for the coordination compound
I. When we write the formulas of the coordination complex, first of all, we write the chemical symbol of the central metal atom or ion.
II. After that, we write the ligands formula/notation in alphabetical order.
III. The formula for the entire coordinatio n sphere, whether charged or not is enclosed in square brackets. Polyato mic ligands and ligands abbreviation are also enclosed in parentheses.
IV. At last, counter ion is written outside the coordination sphere, which is estimated from oxidation state calculation of coordination compound, which ultimately tells the number of counter ions outside the brackets
V. If the counter ion is cationic, it should be written before the complex part and if counter ion is anionic, it should be written after the complex part .
Hence, formula of the given coordination compound can be written as:
Tetracarbonylnickel(0)
⇒[Ni(Co)4]
I. When we write the formulas of the coordination complex, first of all, we write the chemical symbol of the central metal atom or ion.
II. After that, we write the ligands formula/notation in alphabetical order.
III. The formula for the entire coordinatio n sphere, whether charged or not is enclosed in square brackets. Polyato mic ligands and ligands abbreviation are also enclosed in parentheses.
IV. At last, counter ion is written outside the coordination sphere, which is estimated from oxidation state calculation of coordination compound, which ultimately tells the number of counter ions outside the brackets
V. If the counter ion is cationic, it should be written before the complex part and if counter ion is anionic, it should be written after the complex part .
Hence, formula of the given coordination compound can be written as:
Tetraammineaquachloridocobalt(III) chloride
⇒[Co(NH3)4(H2O)Cl]Cl2
B) Formula for the coordination compound
I. When we write the formulas of the coordination complex, first of all, we write the chemical symbol of the central metal atom or ion.
II. After that, we write the ligands formula/notation in alphabetical order.
III. The formula for the entire coordinatio n sphere, whether charged or not is enclosed in square brackets. Polyato mic ligands and ligands abbreviation are also enclosed in parentheses.
IV. At last, counter ion is written outside the coordination sphere, which is estimated from oxidation state calculation of coordination compound, which ultimately tells the number of counter ions outside the brackets
V. If the counter ion is cationic, it should be written before the complex part and if counter ion is anionic, it should be written after the complex part .
Hence, formula of the given coordination compound can be written as:
Potassium tetrahydroxozincate(II)
⇒K2[Zn(OH)4]
C) Formula for the coordination compound
I. When we write the formulas of the coordination complex, first of all, we write the chemical symbol of the central metal atom or ion.
II. After that, we write the ligands formula/notation in alphabetical order.
III. The formula for the entire coordinatio n sphere, whether charged or not is enclosed in square brackets. Polyato mic ligands and ligands abbreviation are also enclosed in parentheses.
IV. At last, counter ion is written outside the coordination sphere, which is estimated from oxidation state calculation of coordination compound, which ultimately tells the number of counter ions outside the brackets
V. If the counter ion is cationic, it should be written before the complex part and if counter ion is anionic, it should be written after the complex part .
Hence, formula of the given coordination compound IUPAC can be written as:
Potassium trioxalatoaluminate(III)
⇒K3[Al(C2O4)3]
D) Formula for the coordination compound
I. When we write the formulas of the coordination complex, first of all, we write the chemical symbol of the central metal atom or ion.
II. After that, we write the ligands formula/notation in alphabetical order.
III. The formula for the entire coordinatio n sphere, whether charged or not is enclosed in square brackets. Polyato mic ligands and ligands abbreviation are also enclosed in parentheses.
IV. At last, counter ion is written outside the coordination sphere, which is estimated from oxidation state calculation of coordination compound, which ultimately tells the number of counter ions outside the brackets
V. If the counter ion is cationic, it should be written before the complex part and if counter ion is anionic, it should be written after the complex part .
VI. If the formula of charged coordination entity is to be written without that of counter ion, the charge is indicated outside the square brackets as a right superscript with the number before the sign.
Hence, formula of the given coordination compound can be written as:
Dichloridobis(ethane-1,2diamine)cobalt(III)
⇒[CoCl2(en)2]+
E) Formula for the coordination compound
I. When we write the formulas of the coordination complex, first of all, we write the chemical symbol of the central metal atom or ion.
II. After that, we write the ligands formula/notation in alphabetical order.
III. The formula for the entire coordinatio n sphere, whether charged or not is enclosed in square brackets. Polyato mic ligands and ligands abbreviation are also enclosed in parentheses.
IV. At last, counter ion is written outside the coordination sphere, which is estimated from oxidation state calculation of coordination compound, which ultimately tells the number of counter ions outside the brackets
V. If the counter ion is cationic, it should be written before the complex part and if counter ion is anionic, it should be written after the complex part .
Hence, formula of the given coordination compound can be written as:
Tetracarbonylnickel(0)
⇒[Ni(Co)4]
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