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Thieno[3,2-b]thiophene

Thieno[3,2-b]thiophene structure

CAS No:
251-41-2
Formula:
C6H4S2
Chemical Name:
Thieno[3,2-b]thiophene
Synonyms:
THIENO[3,2-B]THIOPHENE;1,4-DITHIAPENTALENE;1,4-THIOPHTHENE;1,4-Dithiapentalene 1,4-Thiophthene;BUTTPARK 145\50-51;4-Dithiapentalene 1,4-Thiophthene;Thieno[3,2-b]thiophen;Thieno[3,2-b]thiophene 1,4-Dithiapentalene
Categories:
Pharmaceutical Intermediates > Heterocyclic Compound

Description

White to yellow Solid

Thieno[3,2-b]thiophene, also known as thienothiophene (TT), is a heterocyclic compound. It belongs to the family of fused thiopehenes and is widely used as an intermediate for the synthesis of small molecules and polymers in the application of organic field-effect transistors (OFETs) and organic photovoltaic devices (OPV).

Thieno(3,2-b)thiophene (TT) is an electron rich conjugated polymer that has a quinoidal structure with a narrow band gap. It facilitates a strong intermolecular networking.

Thieno[3,2-b]thiophene Basic Attributes

Molecular Weight：

140.23

Exact Mass：

139.975433

DSSTox ID：

DTXSID80179783

Color/Form：

White crystals

HScode：

29309090

Characteristics

PSA：

56.5

XLogP3：

2.7

Density：

1.367±0.06 g/cm3(Predicted)

Melting Point：

56 °C

Boiling Point：

71 °C / 1mmHg

Flash Point：

98℃

Refractive Index：

1.729

Vapor Pressure：

0.144mmHg at 25°C

Critical Temperature & Pressure：

Keep in dark place,Sealed in dry,Room Temperature

Safety Information

Transport codes：

UN 3335

wgk germany：

hazard class code：

safety instructions：

26-36/37

Marks：

Hazard note：

Harmful

Precautionary statement(s)：

P261-P305 + P351 + P338

Hazard Statements：

22-36/37/38

RIDADR：

UN 3335

GHS Classification：

|Warning|H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]|P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 40 companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Thieno[3,2-b]thiophene Use and Manufacturing

TT may be used as conjugated side chains in the synthesis of donor-acceptor copolymers. It finds potential applications in the enhancement of power conversion efficiency (PCE) for organic solar cells.

Computed Properties

Molecular Weight:140.2
XLogP3:2.7
Hydrogen Bond Acceptor Count:2
Exact Mass:139.97544247
Monoisotopic Mass:139.97544247
Topological Polar Surface Area:56.5
Heavy Atom Count:8
Complexity:80.5
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

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