1,7-OCTADIYNE
- CAS NO.：871-84-1
- Empirical Formula: C8H10
- Molecular Weight: 106.17
- MDL number: MFCD00008580
- EINECS: 212-815-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:16:10
What is 1,7-OCTADIYNE?
Chemical properties
clear colorless to faintly yellow liquid
The Uses of 1,7-OCTADIYNE
1,7-Octadiyne is an useful bifunctional chain extension unit. It participates in the formation of uranium(IV) vinyl complexes. It reacts with frustrated Lewis pair P(o-tolyl)3/B(C6F5)3 by acetylene C-C coupling to yield the zwitterionic product. It undergoes the reductive cyclization during reaction with Re2Cl4(?-dppm)2 (dppm = Ph2PCH2PPh2) and affords quadruply bonded dirhenium(III) complex Re2Cl3(?,η2-C8H7)(?-dppm)2.
General Description
1,7-Octadiyne is a terminal bis-alkyne and participates in the formation of uranium(IV) vinyl complexes. It reacts with frustrated Lewis pair P(o-tolyl)3/B(C6F5)3 by acetylene C-C coupling to yield the zwitterionic product. It undergoes the reductive cyclization during reaction with Re2Cl4(μ-dppm)2 (dppm = Ph2PCH2PPh2) and affords quadruply bonded dirhenium(III) complex Re2Cl3(μ,η2-C8H7)(μ-dppm)2.
Properties of 1,7-OCTADIYNE
| Melting point: | 27°C (estimate) |
| Boiling point: | 135-136 °C (lit.) |
| Density | 0.8 g/mL at 25 °C (lit.) |
| refractive index | n |
| Flash point: | 74 °F |
| storage temp. | 2-8°C |
| solubility | Not miscible or difficult to mix. |
| form | Liquid |
| Specific Gravity | 0.817 |
| color | Clear colorless to faintly yellow |
| BRN | 1697275 |
| CAS DataBase Reference | 871-84-1(CAS DataBase Reference) |
| EPA Substance Registry System | 1,7-Octadiyne (871-84-1) |
Safety information for 1,7-OCTADIYNE
| Signal word | Warning |
| Pictogram(s) |
 Flame Flammables GHS02  Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H226:Flammable liquids H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P240:Ground/bond container and receiving equipment. P241:Use explosion-proof electrical/ventilating/lighting/…/equipment. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 1,7-OCTADIYNE
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