Questions tagged [nomenclature]

This tag should be used for questions about the naming of compounds and elements, usually using systematic names according to IUPAC recommendations, but also using retained traditional names.

Filter by
Sorted by
Tagged with
-1
votes
0answers
28 views

How do we name 6 membered rings with less than 3 double bonds? [closed]

What is the name of the following 5 and 6 membered carbocation rings. Searching the internet without any clue of their name did not give any results...
0
votes
1answer
45 views

How to name the following compound?

I know that when both carboxylic acid and ester group are present then the carboxylic acid takes priority and ester is treated as side chain . It is denoted by prefix alkoxy carbonyl. But the ...
5
votes
1answer
648 views

Dimethylethylamine or Ethyldimethylamine?

I thought that Organic Naming was based on alphabetical for alkyl branches, so I thought it was ethyldimethylamine, however google results show me Dimethylethylamine. So which one is right? And is ...
1
vote
0answers
37 views

IUPAC name of Dewar benzene [closed]

Dewar benzene according to Wikipedia has the IUPAC name bicyclo[2.2.0]hexa-2,5-diene. Is it correct to give this name because resonance takes place and if we fix a certain numbering, as resonance ...
1
vote
0answers
21 views

Is IUPAC nomenclature capable of expressing any potential molecule configuration? [duplicate]

When comparing IUPAC nomenclature with something such as SMILES, it seems to lack an easy way to express a bridge accross an arbitrary structure. While all reasonable structures I've tried to break ...
2
votes
1answer
36 views

What is the meaning of parentheses in “NAD(P)H”?

If someone writes "NAD(P)H is oxidized by ...", does that mean they are referring to both NADH and NADPH? If so doesn't that lead to confusion when thinking quantitatively since the reactions may ...
0
votes
1answer
56 views

What is the difference between cyanato, cyanido and cyano? When should i use which? [closed]

I understand that cyanido is the newly adopted naming in place of cyano but what is cyanato? Can anyone please give examples to illustrate the difference?
0
votes
0answers
24 views

Acetylacetonato or Acetylacetonate

I'm currently working on a project using Iron(III) acetylacetonate, which in the wikipedia page it's written Tris(acetylacetonato)iron(III), and it says it's the IUPAC name, maybe it's obvious but I'm ...
2
votes
0answers
36 views

Nomenclature of a Benzopyran (Chromene) as a Substituent of an Aldehyde

I am currently writing a paper on the benzopyran above. I am attempting to name the compound using IUPAC conventions. Because there is an aldehyde moiety, I suspect I will need to name the compound as ...
1
vote
2answers
67 views

3-methyl-4-oxobutanenitrile or 3-formylbutanenitrile?

Which name is the Preferred IUPAC Name of the above molecule? 3-methyl-4-oxobutanenitrile or 3-formylbutanenitrile? I feel the second one is the PIN, since it's shorter than the first one. But, I ...
4
votes
1answer
112 views

Formyl chloride naming

How is the naming of formyl chloride $\ce{CHOCl}$ justified? What is the functional group in it? Why can't I name it as methanoyl chloride as acid halide is given more preference than aldehyde?
3
votes
1answer
43 views

Nomenclature - Lanthanoids vs Lanthanides (and Actinides vs Actinoids)

Apologies if this seems like a silly question. Rare earth elements (the 4d series) are called by the names Lanthanides or Lanthanoids interchangeably. The same applies for the 5d series, which are ...
1
vote
1answer
28 views

Are all enolised molecules called enolates?

From what I've gathered in my lectures, enolates are enolised cabonyl compounds. However e.g. a nitrile with an H on the alpha C can undergo enolisation. Is the resulting molecule called an enolate or ...
6
votes
2answers
476 views

Why is the name 'propylene oxide' preferred for epoxypropane?

This is the molecule I know as epoxypropane: In my neck of the woods (example), this molecule is used as one of the standard examples of small chiral molecules. The name 'epoxypropane' makes a heck ...
23
votes
4answers
3k views

What is a word for “atom or molecule”?

What is a word for "atom or molecule"? As in: "The entry of an atom or molecule across a cell membrane into a cell is dependent on its size and solubility." This keeps coming up, and it's really ...
2
votes
1answer
54 views

How to arrive at the preferred IUPAC name for 1,2-diphenylethane?

I am reading a textbook that mentions the molecule 1,2-diphenylethane, $\ce{C14H14}$. A Google search leads to PubChem, where it is mentioned that the IUPAC name for the molecule is 2-...
-3
votes
1answer
62 views

Is there a difference between (HO)2 and H2O2?

To me, it looks like the same thing. Is (HO)2 and H2O2 the same compound? When performing stoichiometric calculations, do they get treated the same?
0
votes
2answers
55 views

Nomenclature of ester with cyclic substituents

I have to tell the name of the following compound The name is cyclopropylmethyl cyclobutanecarboxylate. All of it makes sense but I don't understand why the suffix carboxylate comes? Why are we ...
3
votes
0answers
57 views

Is it tennessINE because it has 117 electrons or because it behaves like a halogen?

The NPR News podcast and transcript The Convoluted Story Of How The First Atoms Of Tennessine Were Created includes the following exchange between science reporter Joe Palca and Oak Ridge nuclear ...
1
vote
1answer
61 views

How is the chirality of sidechains written in the IUPAC name?

I circled what I believe to be the chiral centers and I added the locants for the longest carbon chain. One of the chiral centers is in a side chain, so that carbon doesn't have a locant. How should ...
0
votes
1answer
77 views

What will be the name of CH2=CH-O-CO-CH3?

We have this question in the textbook but there is no answer given and I have no idea how to name this compound. Edit: I tried naming the compound. Correct me if I am wrong here 1-Methylpropenoate
1
vote
1answer
37 views

Naming a coordination compound

I was asked to determine the coordination compound which has the name: $$\text{triamminetrinitritocobalt(I)}$$ I thought it must be: $$\ce{[Co(NH3)3(ONO)3]^2-}$$ The $-2$ charge can be deduced by ...
2
votes
0answers
23 views

What is the distinction between alkyloxy and alkoxy prefixes, if any?

The IUPAC nomenclature guidelines reference alkyloxy and alkoxy prefixes at different points. Is there any distinction, at the level of a principle or rationale, between the use cases for the two? For ...
-2
votes
1answer
60 views

Can butan-1-ol be written as butanol, and is it connected to butan-1-ol having Isomers? [closed]

Can butan-1-ol be written as butanol, and is it connected to butan-1-ol having Isomers?
-1
votes
1answer
75 views

How does the sec-pentanyl group look? [duplicate]

I'm starting the very basics of hydrocarbons and I'm having a hard time at understanding when to use the common/trivial name prefixes (sec-, iso-, neo-, etc.). One particular problem is the ...
0
votes
1answer
62 views

What should be the name of the given compound?

Following compound is named as (1) 6-Mercaptocyclohex-4-ene-1,3-diol (2) 1-Mercaptocyclohex-2-ene-4,6-diol (3) 1-Mercaptocyclohex-5-ene-2,4-diol (4) 4-Mercaptocyclohex-2-ene-1,5-diol ...
2
votes
1answer
100 views

What is the IUPAC name of the given compound?

IUPAC name of the given compound is (1) 3-Hydroxycyclohex-4-en-1-one (2) 5-Hydroxycyclohex-3-enone (3) 5-Ketocyclohex-2-enol (4) 3-Ketocyclohex-5-enol By what I understand by ...
1
vote
0answers
61 views

What should be IUPAC name of given compound (see image)? [closed]

I think the name should be 1-carbamoylpentane-3-sulphonic acid, but the answer sheet mentions it as 2-carbamoylpentane-3-sulphonic acid: Can anyone please explain why the chain starting with methyl ...
2
votes
0answers
35 views

What is the name of the glyoxal radical after removing two hydrogen atoms?

What is the name of the radical that results from removing two hydrogen atoms from glyoxal ($\ce{CHO-CHO}$)? It has a roughly this structure: $$\ce{O=C^.-C^.=O}$$ It is an important intermediate in ...
0
votes
1answer
38 views

Isomerism and namegiving

Is this the right chemical formula of the $\ce{Rb[Pt(NH3)Br2Cl]}$ complex: rubidium amminedibromidochloridoplatinate(II)? And is it correct that it has geometric isomerism, being square planar with a ...
10
votes
1answer
951 views

Does sulfoxide H₂SO exist?

The question Does H2SO or H2CO have a higher dipole moment? left me wondering whether $\ce{H2SO}$ has already been synthesized. There are experimental evidences that both hydrogen thioperoxide $\ce{...
1
vote
1answer
91 views

Formic Acid vs Formica - Which came first?

Source: Google(Oxford) So, we know that 'Formic Acid' was derived in formic acid in the late 18th century from the Latin word 'formica'. From Wikipedia: Formica is a genus of ants of the family ...
0
votes
2answers
100 views

Is there a free, super simple app or website for IUPAC names from structures?

I am looking for a free, very simple tool for IUPAC names of organic molecules. I teach high school chemistry, and it would be fantastic to have an app or web tool that students could use to draw ...
0
votes
0answers
78 views

Confusion with IUPAC naming of Morphine

I'm having trouble understand what sections of the molecule morphine relate to what sections of its corresponding IUPAC name of (4R,4aR,7S,7aR,12bS)-3-methyl-2,4,4a,7,7a,13-hexahydro-1H-4,12-...
-2
votes
1answer
32 views

How can I know which way to number the carbon atoms? [closed]

Please help me, I don't know which is the "first" one and what rules apply here...
2
votes
1answer
185 views

Selection of parent chain (IUPAC nomenclature)

In the given compound, there are (apparently) two possibilities of choosing the parent (main) chain for its nomenclature in accordance with IUPAC rules: (A) being the one containing 4 carbon atoms ...
5
votes
1answer
456 views

Chain with double bond or triple bond

In this hydrocarbon there can be two main chains: one with two double bonds and one with a double and a triple bond Both main chains contain seven carbon atoms. Which will be considered correct and ...
0
votes
1answer
48 views

Naming of a dispiroalkane compound

Did I name it right?? Please help me in naming dispiro compounds
2
votes
0answers
86 views

Name of “the” benzodiazepine

Wikipedia has a thorough article on the benzodiazepines. Of course, it is written primarly from the pharmacological point of view; but there is also the "Chemistry" section, which includes the IUPAC ...
0
votes
1answer
57 views

Does space in between have any significance in IUPAC nomenclature?

The correct IUPAC name of the following compound is: (a) 2,4,6-trimethyl cyclohexanone (b) 1,3,5- trimethyl benzophenone (c) trimethylcyclobutanone (d) 2,4,6-trimethylcyclohexanone I ...
0
votes
0answers
59 views

How do I name a substituent which is a cycloalkane which is attached by a chain of more than one carbon?

Above is a picture of an alkane. How would I name this using IUPAC rules? I understand how to name other substituents such as (1,1-dimethylethyl) and some other methyl groups, but I don't know how to ...
-1
votes
1answer
25 views

is 6-benzylhexanoic acid the same as 7-phenylheptanoic acid? [closed]

is 6-benzylhexanoic acid the same as 7-phenylheptanoic acid? If the two compounds stated are equal, what's the more preferred IUPAC name?
2
votes
0answers
93 views

Is prefixes such as di-, tri-, etc. considered for alphabetical order in IUPAC nomenclature?

The correct IUPAC name of a compound was: 4-(1,1-dimethylethyl)-5-ethyloctane. my question is why not 4-ethyl-5-(1,1-dimethylethyl)octane? Are prefixes such as di-, tri-, etc. considered for ...
0
votes
2answers
79 views

How to decide whether to pick 4-bromo-2-methoxyphenol or 4-bromo-6-methoxyphenol as the name for the compound? [closed]

Why is the following compound named as 4-bromo-2-methoxyphenol and not 4-bromo-6-methoxyphenol? Shouldn't the substituents be numbered according to their alphabetical order?
9
votes
3answers
2k views

What is “super” in superphosphate?

This question is inspired from a previous question(marked unclear). I don't know about the context of that question but I was intrigued by a statement in that question: Superphosphate is used ...
10
votes
3answers
972 views

What does a comma signify in inorganic chemistry?

$\ce{(Ca{,}Co)CO3}$ I have never ever seen this before. What does this mean exactly?
0
votes
0answers
44 views

What does a simple or a complex substituent mean? [duplicate]

I am reading rules for IUPAC Nomenclature. The following statement is from my book. Prefixes di, tri, tetra, etc., are not considered in deciding alphabetical order for simple substituents but ...
0
votes
1answer
53 views

What is a “ynoate” in the context of alkynes?

In the literature, I have read the term, "ynoate" refer to a sort of alkyne. Searching through the IUPAC gold book and Google has failed to return an explicit definition.
-1
votes
2answers
129 views

Use IUPAC system to name the structural diagram below

Can someone break down the steps for naming $\ce{CH3-C(Cl)=C(Cl)-CH2-CH3}$?
9
votes
2answers
1k views

How do you name this compound using IUPAC system (including steps)?

And including stereochemistry (cis trans or R S ) I know you start numbering from the double bond because there are no functional groups like -OH, you take the longest carbon chain which is six ...