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Complexes of general formula, fac–[Mo(CO)3(Phosphine)3] have the C—O stretching frequency bands as given below,
Phosphines: PF3 (P), PCl3 (Q), P(Cl)Ph2 (R), PMe3(S)
ΝCO, cm–1 : 2090 (I); 2040 (II); 1977 (III); 1945 (IV)
Phosphines: PF3 (P), PCl3 (Q), P(Cl)Ph2 (R), PMe3(S)
ΝCO, cm–1 : 2090 (I); 2040 (II); 1977 (III); 1945 (IV)
- a)(P –I), (Q–II), (R–III), (S–IV)
- b)(P –II), (Q–I), (R–IV), (S–III)
- c)(P –IV), (Q–III), (R–II), (S–I)
- d)(P –III), (Q–IV), (R–I), (S–II)
Correct answer is option 'A'. Can you explain this answer?
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Complexes of general formula, fac–[Mo(CO)3(Phosphine)3] have the...
CO stretching frequency bands of complexes
• The complexes have general formula fac[Mo(CO)3(Phosphine)3]
• The CO stretching frequency bands are given below for different phosphines:
- PF3 (P) - 2090 (I)
- PCl3 (Q) - 2040 (II)
- P(Cl)Ph2 (R) - 1977 (III)
- PMe3(S) - 1945 (IV)
• Three different phosphines are coordinated with Mo(CO)3 in each complex
• The fac notation indicates that three phosphine ligands are arranged around the central metal atom in a face-capping fashion.
Answer explanation
• The correct answer is option 'A': (P I), (QII), (RIII), (SIV)
• This means that the CO stretching frequency band for complex with PF3 is I (2090 cm-1), for complex with PCl3 is II (2040 cm-1), for complex with P(Cl)Ph2 is III (1977 cm-1), and for complex with PMe3 is IV (1945 cm-1).
• The answer is obtained by comparing the CO stretching frequency bands for each phosphine with the given values and matching them with the options.
• The CO stretching frequency bands are affected by the nature of the ligands and the coordination environment around the metal atom.
• In general, the CO stretching frequency decreases with an increase in electron density around the metal atom.
• The phosphines have different electron-donating abilities due to the presence of different groups such as F, Cl, Ph, and Me.
• The order of electron-donating ability is PMe3 > PF3 > P(Cl)Ph2 > PCl3.
• This order is reflected in the CO stretching frequency bands, where the complex with the most electron-donating phosphine (PMe3) has the lowest frequency band (IV) and the complex with the least electron-donating phosphine (PCl3) has the highest frequency band (II).
• The complexes have general formula fac[Mo(CO)3(Phosphine)3]
• The CO stretching frequency bands are given below for different phosphines:
- PF3 (P) - 2090 (I)
- PCl3 (Q) - 2040 (II)
- P(Cl)Ph2 (R) - 1977 (III)
- PMe3(S) - 1945 (IV)
• Three different phosphines are coordinated with Mo(CO)3 in each complex
• The fac notation indicates that three phosphine ligands are arranged around the central metal atom in a face-capping fashion.
Answer explanation
• The correct answer is option 'A': (P I), (QII), (RIII), (SIV)
• This means that the CO stretching frequency band for complex with PF3 is I (2090 cm-1), for complex with PCl3 is II (2040 cm-1), for complex with P(Cl)Ph2 is III (1977 cm-1), and for complex with PMe3 is IV (1945 cm-1).
• The answer is obtained by comparing the CO stretching frequency bands for each phosphine with the given values and matching them with the options.
• The CO stretching frequency bands are affected by the nature of the ligands and the coordination environment around the metal atom.
• In general, the CO stretching frequency decreases with an increase in electron density around the metal atom.
• The phosphines have different electron-donating abilities due to the presence of different groups such as F, Cl, Ph, and Me.
• The order of electron-donating ability is PMe3 > PF3 > P(Cl)Ph2 > PCl3.
• This order is reflected in the CO stretching frequency bands, where the complex with the most electron-donating phosphine (PMe3) has the lowest frequency band (IV) and the complex with the least electron-donating phosphine (PCl3) has the highest frequency band (II).
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Complexes of general formula, fac–[Mo(CO)3(Phosphine)3] have the...
It is based on π acceptor ability of phosphines. As electron-withdrawing groups are placed on the phosphorous atom, the energy of the pi-acceptor (sigma-*) on phosphorous is lowered in energy, providing an increase in backbonding ability with P.Increasing back bonding of metal with P leaves lesser electron density on metal to back bond with CO ligand. And lesser the M--->CO back bonding , stronger is the C=O bond.
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Complexes of general formula, fac–[Mo(CO)3(Phosphine)3] have the C—O stretching frequency bands as given below,Phosphines: PF3 (P), PCl3 (Q), P(Cl)Ph2 (R), PMe3(S)ΝCO, cm–1 : 2090 (I); 2040 (II); 1977 (III); 1945 (IV)a)(P –I), (Q–II), (R–III), (S–IV)b)(P –II), (Q–I), (R–IV), (S–III)c)(P –IV), (Q–III), (R–II), (S–I)d)(P –III), (Q–IV), (R–I), (S–II)Correct answer is option 'A'. Can you explain this answer?
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Complexes of general formula, fac–[Mo(CO)3(Phosphine)3] have the C—O stretching frequency bands as given below,Phosphines: PF3 (P), PCl3 (Q), P(Cl)Ph2 (R), PMe3(S)ΝCO, cm–1 : 2090 (I); 2040 (II); 1977 (III); 1945 (IV)a)(P –I), (Q–II), (R–III), (S–IV)b)(P –II), (Q–I), (R–IV), (S–III)c)(P –IV), (Q–III), (R–II), (S–I)d)(P –III), (Q–IV), (R–I), (S–II)Correct answer is option 'A'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Complexes of general formula, fac–[Mo(CO)3(Phosphine)3] have the C—O stretching frequency bands as given below,Phosphines: PF3 (P), PCl3 (Q), P(Cl)Ph2 (R), PMe3(S)ΝCO, cm–1 : 2090 (I); 2040 (II); 1977 (III); 1945 (IV)a)(P –I), (Q–II), (R–III), (S–IV)b)(P –II), (Q–I), (R–IV), (S–III)c)(P –IV), (Q–III), (R–II), (S–I)d)(P –III), (Q–IV), (R–I), (S–II)Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Complexes of general formula, fac–[Mo(CO)3(Phosphine)3] have the C—O stretching frequency bands as given below,Phosphines: PF3 (P), PCl3 (Q), P(Cl)Ph2 (R), PMe3(S)ΝCO, cm–1 : 2090 (I); 2040 (II); 1977 (III); 1945 (IV)a)(P –I), (Q–II), (R–III), (S–IV)b)(P –II), (Q–I), (R–IV), (S–III)c)(P –IV), (Q–III), (R–II), (S–I)d)(P –III), (Q–IV), (R–I), (S–II)Correct answer is option 'A'. Can you explain this answer?.
Complexes of general formula, fac–[Mo(CO)3(Phosphine)3] have the C—O stretching frequency bands as given below,Phosphines: PF3 (P), PCl3 (Q), P(Cl)Ph2 (R), PMe3(S)ΝCO, cm–1 : 2090 (I); 2040 (II); 1977 (III); 1945 (IV)a)(P –I), (Q–II), (R–III), (S–IV)b)(P –II), (Q–I), (R–IV), (S–III)c)(P –IV), (Q–III), (R–II), (S–I)d)(P –III), (Q–IV), (R–I), (S–II)Correct answer is option 'A'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Complexes of general formula, fac–[Mo(CO)3(Phosphine)3] have the C—O stretching frequency bands as given below,Phosphines: PF3 (P), PCl3 (Q), P(Cl)Ph2 (R), PMe3(S)ΝCO, cm–1 : 2090 (I); 2040 (II); 1977 (III); 1945 (IV)a)(P –I), (Q–II), (R–III), (S–IV)b)(P –II), (Q–I), (R–IV), (S–III)c)(P –IV), (Q–III), (R–II), (S–I)d)(P –III), (Q–IV), (R–I), (S–II)Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Complexes of general formula, fac–[Mo(CO)3(Phosphine)3] have the C—O stretching frequency bands as given below,Phosphines: PF3 (P), PCl3 (Q), P(Cl)Ph2 (R), PMe3(S)ΝCO, cm–1 : 2090 (I); 2040 (II); 1977 (III); 1945 (IV)a)(P –I), (Q–II), (R–III), (S–IV)b)(P –II), (Q–I), (R–IV), (S–III)c)(P –IV), (Q–III), (R–II), (S–I)d)(P –III), (Q–IV), (R–I), (S–II)Correct answer is option 'A'. Can you explain this answer?.
Solutions for Complexes of general formula, fac–[Mo(CO)3(Phosphine)3] have the C—O stretching frequency bands as given below,Phosphines: PF3 (P), PCl3 (Q), P(Cl)Ph2 (R), PMe3(S)ΝCO, cm–1 : 2090 (I); 2040 (II); 1977 (III); 1945 (IV)a)(P –I), (Q–II), (R–III), (S–IV)b)(P –II), (Q–I), (R–IV), (S–III)c)(P –IV), (Q–III), (R–II), (S–I)d)(P –III), (Q–IV), (R–I), (S–II)Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemistry.
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Here you can find the meaning of Complexes of general formula, fac–[Mo(CO)3(Phosphine)3] have the C—O stretching frequency bands as given below,Phosphines: PF3 (P), PCl3 (Q), P(Cl)Ph2 (R), PMe3(S)ΝCO, cm–1 : 2090 (I); 2040 (II); 1977 (III); 1945 (IV)a)(P –I), (Q–II), (R–III), (S–IV)b)(P –II), (Q–I), (R–IV), (S–III)c)(P –IV), (Q–III), (R–II), (S–I)d)(P –III), (Q–IV), (R–I), (S–II)Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Complexes of general formula, fac–[Mo(CO)3(Phosphine)3] have the C—O stretching frequency bands as given below,Phosphines: PF3 (P), PCl3 (Q), P(Cl)Ph2 (R), PMe3(S)ΝCO, cm–1 : 2090 (I); 2040 (II); 1977 (III); 1945 (IV)a)(P –I), (Q–II), (R–III), (S–IV)b)(P –II), (Q–I), (R–IV), (S–III)c)(P –IV), (Q–III), (R–II), (S–I)d)(P –III), (Q–IV), (R–I), (S–II)Correct answer is option 'A'. Can you explain this answer?, a detailed solution for Complexes of general formula, fac–[Mo(CO)3(Phosphine)3] have the C—O stretching frequency bands as given below,Phosphines: PF3 (P), PCl3 (Q), P(Cl)Ph2 (R), PMe3(S)ΝCO, cm–1 : 2090 (I); 2040 (II); 1977 (III); 1945 (IV)a)(P –I), (Q–II), (R–III), (S–IV)b)(P –II), (Q–I), (R–IV), (S–III)c)(P –IV), (Q–III), (R–II), (S–I)d)(P –III), (Q–IV), (R–I), (S–II)Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of Complexes of general formula, fac–[Mo(CO)3(Phosphine)3] have the C—O stretching frequency bands as given below,Phosphines: PF3 (P), PCl3 (Q), P(Cl)Ph2 (R), PMe3(S)ΝCO, cm–1 : 2090 (I); 2040 (II); 1977 (III); 1945 (IV)a)(P –I), (Q–II), (R–III), (S–IV)b)(P –II), (Q–I), (R–IV), (S–III)c)(P –IV), (Q–III), (R–II), (S–I)d)(P –III), (Q–IV), (R–I), (S–II)Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Complexes of general formula, fac–[Mo(CO)3(Phosphine)3] have the C—O stretching frequency bands as given below,Phosphines: PF3 (P), PCl3 (Q), P(Cl)Ph2 (R), PMe3(S)ΝCO, cm–1 : 2090 (I); 2040 (II); 1977 (III); 1945 (IV)a)(P –I), (Q–II), (R–III), (S–IV)b)(P –II), (Q–I), (R–IV), (S–III)c)(P –IV), (Q–III), (R–II), (S–I)d)(P –III), (Q–IV), (R–I), (S–II)Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice Chemistry tests.
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