What is the name for the following coordination compound or ion?
Na3[Cr (NH3) NO2 Cl3]
Na3 = sodium, NH3 = ammine, NO2- = nitro, cl3 = trichloride, cr = Chromium
Now chromiums charge is -1+(-3)+3+ chromium= 0. chromium is 1.
NH3 is a cation, cl is anion, but we use chromium instead of chromate.
Sodium amminenitrotrichloride chromium(I).
correction: no space between amminenitrotrichloride and chromium.
sodium amminenitrotrichloridechromium(I)
The name for the coordination compound or ion Na3[Cr(NH3)NO2Cl3] can be determined by following a set of rules used in naming coordination compounds.
Step 1: Identify the central metal or transition metal ion. In this case, it is Chromium (Cr).
Step 2: Identify and name the ligands bound to the central metal. Ligands are the molecules or ions that bond to the central metal. In this compound, we have three different ligands:
- NH3: Ammonia
- NO2: Nitrite
- Cl: Chloride
Step 3: Determine the oxidation state of the central metal ion. Chromium (Cr) belongs to Group 6, so it normally has an oxidation state of +6. However, since each of the three chlorides (Cl) has a -1 charge, we know that the oxidation state of the chromium ion is +3 (-1 × 3 = -3, +6 - 3 = +3).
Step 4: Write the name of the cation first. In this compound, the cation is Na+, so we start the name with "sodium."
Step 5: Write the name of the central metal with the appropriate Roman numeral in parentheses to indicate its oxidation state. In this case, it is chromium(III).
Step 6: Write the names of the ligands in alphabetical order, followed by their respective prefixes. In this case, we have:
- Ammonia: triammine (since we have three ammonia ligands)
- Nitrite: nitrito
- Chloride: trichloro (since we have three chloride ligands)
Step 7: Put everything together and enclose the coordination compound or ion in square brackets. In this case, the correct name is "sodium triamminenitrito(trichloro)chromium(III)."
Note: The name of the compound or ion may slightly vary depending on the specific guidelines or nomenclature rules followed by different sources or authorities. It is always best to consult the latest version of the nomenclature guidelines if needed.