User user5181

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17

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31k

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Why does Nitrogen form N₂ (and not N₄) while but Phosphorus forms P₄ (and not P₂)?

bond

Aug 4 '18 at 21:23 Loong♦ 38.7k

1

12

votes

2

answers

3k

views

Bromination of 1,3,5-cyclooctatriene followed by nucleophilic substitution by excess dimethylamine

Apr 18 '18 at 11:46 orthocresol♦ 49.5k

6

8

votes

1

answer

10k

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Hardness and softness are terms used to describe which aspect of acidic behaviour?

hsab

Jan 28 '17 at 17:38 prashant 1

7

votes

2

answers

2k

views

Why does no Robinson Annulation occur after the Michael addition?

organic-chemistry reaction-mechanism carbonyl-compounds

Feb 26 '18 at 2:05 Gaurang Tandon 7,461

6

votes

2

answers

26k

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How to assign the signals in the H-NMR of Aspirin?

nmr-spectroscopy

Oct 28 '14 at 22:53 ron 75.6k

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votes

2

answers

1k

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What splitting pattern is this?

spectroscopy nmr-spectroscopy

Jul 1 '18 at 4:01 Gaurang Tandon 7,461

5

votes

1

answer

700

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Show the vibrational frequency of fluorine molecule anion is much lower than that of fluorine molecule

bond quantum-chemistry molecular-orbital-theory orbitals

Mar 4 '18 at 2:38 Avyansh Katiyar 4,539

5

votes

1

answer

272

views

Reaction of CpFe(CO)2Cl with phenyllithium

organometallic-compounds

Apr 1 '17 at 16:17 orthocresol♦ 49.5k

1

4

votes

1

answer

1k

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Dehydration of secondary alcohol via E1 mechanism

organic-chemistry reaction-mechanism alcohols

Jun 25 '18 at 5:51 Gaurang Tandon 7,461

3

votes

1

answer

481

views

Why it is not yet possible to produce ethanol selectively in the Fischer Tropsch reaction?

organic-chemistry synthesis catalysis

Mar 11 '16 at 22:24 mhchem 3,253

3

votes

1

answer

5k

views

Assign the configurations of the stereo centres in (-)-menthol and (+)-neomenthol?

homework stereochemistry chirality conformers isomers

May 10 '15 at 13:36 LDC3 7,647

3

votes

1

answer

2k

views

Synthesis of Pseudopelletierine, Mannich reaction base catalysed

organic-chemistry reaction-mechanism synthesis

Nov 7 '14 at 19:58 jerepierre 9,699

3

votes

1

answer

590

views

HNMR Assignment

spectroscopy nmr-spectroscopy

Oct 18 '14 at 21:33 long 10.6k

2

votes

1

answer

2k

views

Assigning 1H NMR spectrum and predicting peak coupling patterns for 2H-1-benzopyran-2-one

nmr-spectroscopy

Nov 9 '16 at 12:57 Loong♦ 38.7k

2

votes

2

answers

647

views

Assigning Carbon NMR

organic-chemistry nmr-spectroscopy

May 16 '15 at 5:18 Community♦ 1

2

votes

2

answers

872

views

What is the oxidation state of all the atoms in this compound, W(CH3CN)3(CO)3?

oxidation-state

Feb 14 '15 at 8:18 Del Pate 1,991

2

votes

1

answer

1k

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Suggest possible structures for the compound PF3(Ph)(NMe2) using the NMR data

nmr-spectroscopy

Nov 2 '14 at 19:31 Community♦ 1

1

vote

1

answer

891

views

Reactions involving trimethylaluminium Al2Me6 [closed]

stoichiometry

Apr 8 '17 at 16:38 M.A.R. 9,322

1

vote

1

answer

45

views

Which ligands would be exchanged in this reaction?

coordination-compounds

Nov 4 '14 at 0:17 ron 75.6k

1

vote

1

answer

2k

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How can the 18 electron rule be used to explain that Fe(η5-C5H5)2 doesn't react with hydrogen but Ni(η5-C5H5)2 does?

electrons electronic-configuration coordination-compounds hydrogen

Oct 27 '14 at 22:10 Philipp 15.9k

1

vote

2

answers

8k

views

Which has the higher chemical shift E/Z alkene?

nmr-spectroscopy

Oct 23 '14 at 3:13 long 10.6k

1

vote

1

answer

178

views

Mass Spectroscopy peak assignments in but-3-en-1-ol

mass-spectrometry

Oct 20 '14 at 19:09 Klaus-Dieter Warzecha 40.9k

0

votes

1

answer

6k

views

Describe the bonding in a tribromide anion, what is its structure?

inorganic-chemistry molecular-structure lewis-structure

Feb 6 '19 at 20:50 andselisk♦ 28.5k

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23 Questions

Why does Nitrogen form N₂ (and not N₄) while but Phosphorus forms P₄ (and not P₂)?

Bromination of 1,3,5-cyclooctatriene followed by nucleophilic substitution by excess dimethylamine

Hardness and softness are terms used to describe which aspect of acidic behaviour?

Why does no Robinson Annulation occur after the Michael addition?

How to assign the signals in the H-NMR of Aspirin?

What splitting pattern is this?

Show the vibrational frequency of fluorine molecule anion is much lower than that of fluorine molecule

Reaction of CpFe(CO)2Cl with phenyllithium

Dehydration of secondary alcohol via E1 mechanism

Why it is not yet possible to produce ethanol selectively in the Fischer Tropsch reaction?

Assign the configurations of the stereo centres in (-)-menthol and (+)-neomenthol?

Synthesis of Pseudopelletierine, Mannich reaction base catalysed

HNMR Assignment

Assigning 1H NMR spectrum and predicting peak coupling patterns for 2H-1-benzopyran-2-one

Assigning Carbon NMR

What is the oxidation state of all the atoms in this compound, W(CH3CN)3(CO)3?

Suggest possible structures for the compound PF3(Ph)(NMe2) using the NMR data

Reactions involving trimethylaluminium Al2Me6 [closed]

Which ligands would be exchanged in this reaction?

How can the 18 electron rule be used to explain that Fe(η5-C5H5)2 doesn't react with hydrogen but Ni(η5-C5H5)2 does?

Which has the higher chemical shift E/Z alkene?

Mass Spectroscopy peak assignments in but-3-en-1-ol

Describe the bonding in a tribromide anion, what is its structure?