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628-39-7

Basic Information
CAS No.: 628-39-7
Name: Diethyldiselenide
Molecular Structure:
Molecular Structure of 628-39-7 (Diethyldiselenide)
Formula: C4H10Se2
Molecular Weight: 216.04
Synonyms: Ethyldiselenide (6CI,7CI,8CI);Diselenide, diethyl;
EINECS: 211-042-6
Density: 1.23 g/cm3

Melting Point:
Boiling Point: 199.164 °C at 760 mmHg
Flash Point: 74.252 °C
Solubility:
Appearance: Red liquid
Hazard Symbols:
Risk Codes: 23/25-33-50/53
Safety: 20/21-28-45
Transport Information:
PSA: 0.00000
LogP: 1.18620
Synthetic route
74-96-4

ethyl bromide

628-39-7

diethyl diselenide

Conditions
ConditionsYield
With potassium hydroxide; selenium; hydrazine hydrate In water at 40 - 45℃;97%
With potassium hydroxide; selenium(IV) oxide; hydrazine hydrate In water at 40 - 45℃;95%
With disodium diselenide In N,N-dimethyl-formamide at 50℃; for 0.5h;88%
75-03-6

ethyl iodide

628-39-7

diethyl diselenide

Conditions
ConditionsYield
With disodium diselenide; tetrabutylammomium bromide In water for 0.05h;90%
With potassium hydroxide; selenium; hydrazine hydrate In water at 60 - 70℃;89%
With sodium hydroxide; selenium; hydrazine hydrate 1.) MeOH, 6 h; Multistep reaction;
With selenium; copper(II) oxide; potassium hydroxide In dimethyl sulfoxide at 90℃; Inert atmosphere;
75-07-0

acetaldehyde

628-39-7

diethyl diselenide

Conditions
ConditionsYield
With disodium diselenide; sodium hydrogen selenide; N,N-dimethyl-formamide In ethanol at 60 - 70℃; for 7h;90%
95494-85-2

1,2-bis(ethylseleno)-1-phenylethene

A

18782-55-3

2,5-bis-phenylselenophene

B

628-39-7

diethyl diselenide

C

(1-ethylseleno)-1-phenylethene

D

(tris-ethylselanyl-vinyl)-benzene

Conditions
ConditionsYield
at 180℃; for 25h;A n/a
B n/a
C 81%
D n/a
693-03-8

n-butyl magnesium bromide

175538-67-7

(Z)-1,2-bis(ethylseleno)ethene

A

628-39-7

diethyl diselenide

B

111-65-9

octane

C

7433-78-5

cis-5-decene

D

(Z)-ethyl-1-hexene-1-yl selenide

Conditions
ConditionsYield
With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II) In diethyl ether at 20℃; Further byproducts given;A 145 mg
B 226 mg
C 78%
D 42 mg
75-07-0

acetaldehyde

A

15732-69-1

2,4,6-trimethyl-1,3,5-triselenane

B

628-39-7

diethyl diselenide

Conditions
ConditionsYield
With bis(trimethylsilyl)selenide; boron trifluoride diethyl etherate In dichloromethane at 0℃; for 6h;A 54%
B n/a
5926-26-1

(chloromethyl)trimethoxysilane

GENERIC INORGANIC CATION; ethaneselenolate

A

628-39-7

diethyl diselenide

B

126912-03-6

bis(trimethoxysilylmethyl) selenide

C

ethyl (trimethoxysilyl)methyl selenide

D

bis(trimethoxysilylmethyl)diselenide

Conditions
ConditionsYield
In tetrahydrofuran for 1.5h; Heating;A n/a
B n/a
C n/a
D 35%
17912-00-4

bis-(1-bromo-vinyl) sulfoxide

57796-75-5

divinyl selenide

A

628-39-7

diethyl diselenide

B

136308-15-1

di<2-(vinylseleno)vinyl> sulfoxide

Conditions
ConditionsYield
With ammonia; sodium for 0.666667h;A 20%
B 12%
64-67-5

diethyl sulfate

628-39-7

diethyl diselenide

Conditions
ConditionsYield
With disodium diselenide
With potassium diselenide
60-29-7

diethyl ether

628-39-7

diethyl diselenide

Conditions
ConditionsYield
With aluminum selenide at 250 - 300℃;
64-17-5

ethanol

628-39-7

diethyl diselenide

Conditions
ConditionsYield
With aluminum selenide at 250 - 300℃;
593-69-1

ethaneselenol

628-39-7

diethyl diselenide

Conditions
ConditionsYield
With air
With oxygen for 24h;
563-17-7

potassium ethyl sulfate

628-39-7

diethyl diselenide

Conditions
ConditionsYield
With potassium diselenide
64-17-5

ethanol

593-69-1

ethaneselenol

106-93-4

ethylene dibromide

628-39-7

diethyl diselenide

75-03-6

ethyl iodide

80637-16-7

1-(2-Chloro-ethylsulfanyl)-propyne

A

628-39-7

diethyl diselenide

B

13597-15-4

1-ethylsulfanyl-propyne

Conditions
ConditionsYield
With lithium selenide In ammonia
106-93-4

ethylene dibromide

Na salt of ethylseleno mercaptan

Na salt of ethylseleno mercaptan

A

628-39-7

diethyl diselenide

B

74-85-1

ethene

593-69-1

ethaneselenol

air

air

628-39-7

diethyl diselenide

60-29-7

diethyl ether

aluminium selenide

aluminium selenide

A

628-39-7

diethyl diselenide

B

627-53-2

diethylselenium

Conditions
ConditionsYield
at 300 - 350℃;
74-96-4

ethyl bromide

A

628-39-7

diethyl diselenide

B

107976-06-7

diethyl-triselenide

C

3600-24-6

diethyltrisulfane

D

C4H10S2Se

Conditions
ConditionsYield
With sodium hydroxide; selenium; sulfur; hydrazine hydrate In water at 52 - 56℃; Further byproducts given;
74-96-4

ethyl bromide

A

110-81-6

Diethyl disulfide

B

628-39-7

diethyl diselenide

C

352-93-2

diethyl sulphide

D

627-53-2

diethylselenium

Conditions
ConditionsYield
With sodium hydroxide; selenium; sulfur; hydrazine hydrate In water at 35℃; Product distribution; Further Variations:; Reagents;A 29.7 % Chromat.
B 36.2 % Chromat.
C 2.2 % Chromat.
D 5.5 % Chromat.
74-96-4

ethyl bromide

A

110-81-6

Diethyl disulfide

B

628-39-7

diethyl diselenide

C

627-53-2

diethylselenium

D

88890-93-1

ethyl ethylselenosulfenate

Conditions
ConditionsYield
With sodium hydroxide; selenium; sulfur; hydrazine hydrate In water at 35℃; Further byproducts given;A 29.7 % Chromat.
B 36.2 % Chromat.
C 5.5 % Chromat.
D 25.9 % Chromat.
74-96-4

ethyl bromide

A

628-39-7

diethyl diselenide

B

627-54-3

diethyl telluride

C

26105-63-5

diethyl ditelluride

D

C4H10SeTe

Conditions
ConditionsYield
With sodium hydroxide; tellurium; sulfur; hydrazine hydrate In water at 35℃; Further byproducts given;A 43.7 % Chromat.
B 3.5 % Chromat.
C 30.3 % Chromat.
D 1.03 % Chromat.
628-39-7

diethyl diselenide

(2,3,4,6-tetra-O-benzyl-2-β-D-glucopyranosyl)tri-n-butylstannane

ethyl-2,3,4,6-tetra-O-benzyl-1-seleno-β-D-glucopyranoside

Conditions
ConditionsYield
With potassium fluoride; copper(l) chloride In 1,4-dioxane at 110℃; for 24h; Inert atmosphere; stereospecific reaction;96%
628-39-7

diethyl diselenide

bis[bis(trimethylsilyl)amido]stannylene

C16H46N2Se2Si4Sn

Conditions
ConditionsYield
In hexane at 20℃; for 1h; Inert atmosphere;95%
628-39-7

diethyl diselenide

59863-12-6

bis[bis(trimethylsilyl)amino]germanium(II)

C16H46GeN2Se2Si4

Conditions
ConditionsYield
In hexane at 20℃; for 1h; Inert atmosphere;93%
628-39-7

diethyl diselenide

84806-15-5

1,3-di-tert-butyl-2,2-dimethyl-1,3,2,4-diazasilagermaetidine

[Me2Si(Nt-Bu2)Ge{SeEt}2]

Conditions
ConditionsYield
In hexane at 70℃; for 1h;92%
628-39-7

diethyl diselenide

33578-05-1

methyl 2-(phenylethynyl)benzoate

4-(ethylselanyl)-3-phenyl-1H-isochromen-1-one
1314961-26-6

4-(ethylselanyl)-3-phenyl-1H-isochromen-1-one

Conditions
ConditionsYield
With Oxone In ethanol for 0.666667h; Sonication; regioselective reaction;90%
With tetrabutylammonium tetrafluoroborate In acetonitrile at 20℃; for 0.0833333h; Electrochemical reaction; Green chemistry;89%
Stage #1: diethyl diselenide With iron(III) chloride In dichloromethane at 20℃; for 0.333333h;
Stage #2: methyl 2-(phenylethynyl)benzoate In dichloromethane at 20℃; for 18h; regioselective reaction;
85%
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    Molecular Formula C4H10Se2 Molecular Weight 216.04 CAS Registry Number 628-39-7 EINECS 211-042-6 NameDiethyldiselenide…

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Specification

Diethyldiselenide is an organic compound with the formula C4H10Se2, and its systematic name is the same with the product name. With the CAS registry number 628-39-7, it is also named as Diselenide, diethyl. It belongs to the product category of Organoselenides. Its EINECS number is 211-042-6. In addition, the molecular weight is 216.04. Its classification code is Skin / Eye Irritant. This chemical should be sealed and stored below the temperature of 5 °C. Moreover, it should be protected from oxides.

Physical properties of Diethyldiselenide are: (1)ACD/LogP: 3.22; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 3.22; (4)ACD/LogD (pH 7.4): 3.22; (5)ACD/BCF (pH 5.5): 164.89; (6)ACD/BCF (pH 7.4): 164.89; (7)ACD/KOC (pH 5.5): 1344.87; (8)ACD/KOC (pH 7.4): 1344.87; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 3; (12)Flash Point: 74.252 °C; (13)Enthalpy of Vaporization: 41.757 kJ/mol; (14)Boiling Point: 199.164 °C at 760 mmHg; (15)Vapour Pressure: 0.49 mmHg at 25°C.

Preparation of Diethyldiselenide: this chemical can be prepared by bromoethane at the temperature of 50 °C. This reaction will need reagent Na2Se2 and solvent dimethylformamide with the reaction time of 30 min. The yield is about 88%.

Diethyldiselenide can be prepared by bromoethane at the temperature of 50 °C

Uses of Diethyldiselenide: it can be used to produce 3-ethylselanyl-propene at the temperature of 50 °C. It will need reagents ytterbium powder, TMSCl and solvent tetrahydrofuran with the reaction time of 2 hours. The yield is about 60%.

Diethyldiselenide can be used to produce 3-ethylselanyl-propene at the temperature of 50 °C

When you are using this chemical, please be cautious about it as the following:
This chemical is toxic by inhalation and if swallowed. It is very toxic to aquatic organisms as it may cause long-term adverse effects in the aquatic environment. This substance has a danger of cumulative effects. When using it, you must not eat, drink or smoke. After contact with skin, you need to wash immediately with plenty of ... (to be specified by the manufacturer). In case of accident or if you feel unwell, you should seek medical advice immediately (show the label where possible).

You can still convert the following datas into molecular structure:
(1)SMILES: [Se]([Se]CC)CC
(2)Std. InChI: InChI=1S/C4H10Se2/c1-3-5-6-4-2/h3-4H2,1-2H3
(3)Std. InChIKey: OMAWWKIPXLIPDE-UHFFFAOYSA-N

The toxicity data is as follows:  

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rabbit LCLo skin 8600ug/kg (8.6mg/kg) SKIN AND APPENDAGES (SKIN): "DERMATITIS, OTHER: AFTER SYSTEMIC EXPOSURE" National Technical Information Service. Vol. OTS0555235,
rat LCLo inhalation 2200mg/m3/45M (2200mg/m3) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES

BEHAVIORAL: EXCITEMENT
National Technical Information Service. Vol. OTS0555235,
rat LD50 oral 90mg/kg (90mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

SKIN AND APPENDAGES (SKIN): HAIR: OTHER
National Technical Information Service. Vol. OTS0555235,