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ChemicalBook >> CAS DataBase List >>9-BBN DIMER

9-BBN DIMER

CAS No.
21205-91-4
Chemical Name:
9-BBN DIMER
Synonyms
9-BORABICYCLO[3.3.1]NONANE DIMER;9-BBN DIMER;9-BBN,Dimmer;9BBN0.5MinTHF;9-BBN dimer, 97%;9-BBN dimer, 97% (Gms);9-BBN CRYSTALLINE DIMER;9-BBN,0.5MsolutioninTHF;9-BBN dimer,98%,crystalline;9-BBN DIMER, CRYSTALLINE, 98%
CBNumber:
CB4155805
Molecular Formula:
C16H30B2
Molecular Weight:
244.04
MDL Number:
MFCD00168069
MOL File:
21205-91-4.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-05-28 02:41:29
Product description Number Pack Size Price
9-Borabicyclo[3.3.1]nonane dimer 178713 5g $126
9-Borabicyclo[3.3.1]nonane dimer 178713 25g $403
9-BBN Dimer 440354 1g $319
9-BBN Dimer 440354 2.5g $418
9-BBN Dimer (Technical Grade) TRC-B119150-5G 5g $138
More product size

9-BBN DIMER Properties

Melting point 150-152 °C(lit.)
Boiling point 365.8±48.0 °C(Predicted)
storage temp. 2-8°C
solubility Soluble in tetrahydrofuran, ether, hexane, benzene, toluene, carbon tetrachloride, chloroform, dichloromethane and dimethylsulfide. Slightly soluble in cyclohexane, dimethoxyethane, diglyme and dioxane.
form crystalline
Sensitive Air & Moisture Sensitive
BRN 605509
Stability Hygroscopic, Moisture Sensitive
InChI InChI=1S/C16H30B2/c1-5-13-7-2-8-14(6-1)17(13)19-18(20-17)15-9-3-10-16(18)12-4-11-15/h13-16H,1-12H2
InChIKey IYDIZBOKVLHCQZ-GEEKYZPCSA-N
SMILES B12([H]B3(C4CCCC3CCC4)[H]1)C1CCCC2CCC1
UNSPSC Code 12352005
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Flame (GHS02)Exclamation Mark (GHS07)
GHS02,GHS07
Signal word  Danger
Hazard statements  H228-H261-H315-H319-H335
Precautionary statements  P210-P231+P232-P261-P305+P351+P338-P422
PPE Eyeshields, Gloves, type P3 (EN 143) respirator cartridges
Hazard Codes  F,Xi
Risk Statements  11-14/15-36/37/38
Safety Statements  26-43
RIDADR  UN 3396 4.3/PG 2
WGK Germany  3
10-16
HazardClass  4.2
PackingGroup  I
HS Code  29349990
Storage Class 4.3 - Hazardous materials which set free flammable gases upon contact with water
Hazard Classifications Eye Irrit. 2
Flam. Sol. 1
Skin Irrit. 2
STOT SE 3
Water-react 2
Limited Quantities 0.5 Kg (1.1 lbs) (solid)
Excepted Quantities Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml)
NFPA 704
2
1 0

9-BBN DIMER price More Price(29)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 178713 9-Borabicyclo[3.3.1]nonane dimer 21205-91-4 5g $126 2026-04-30 Buy
Sigma-Aldrich 178713 9-Borabicyclo[3.3.1]nonane dimer 21205-91-4 25g $403 2026-04-30 Buy
Usbiological 440354 9-BBN Dimer 21205-91-4 1g $319 2026-06-03 Buy
Usbiological 440354 9-BBN Dimer 21205-91-4 2.5g $418 2026-06-03 Buy
TRC TRC-B119150-5G 9-BBN Dimer (Technical Grade) 21205-91-4 5g $138 2026-06-03 Buy
Product number Packaging Price Buy
178713 5g $126 Buy
178713 25g $403 Buy
440354 1g $319 Buy
440354 2.5g $418 Buy
TRC-B119150-5G 5g $138 Buy

9-BBN DIMER Chemical Properties,Uses,Production

Chemical Properties

white crystals or crystalline powder

Uses

Employed in the hydroboration of alkynes, nitriles, and ketones.

reaction suitability

reagent type: reductant

Purification Methods

It is available as the solid dimer or in tetrahydrofuran solution. The solid is relatively stable and can be purified by distillation in a vacuum (as dimer) and by recrystallisation from tetrahydrofuran (solubility at room temperature is 9.5%, 0.78M), filter off the solid under N2, wash it with dry pentane and dry it in vacuo at ca 100o. The solid is a dimer (IR 1567cm-1), stable in air (for ca 2 months), and can be heated for 24hours at 200o in an inert atmosphere without loss of hydride activity. It is a dimer in tetrahydrofuran solution also (IR 1567cm-1). It is sensitive to H2O and air (O2) in solution. Its concentration in solution can be determined by reaction with MeOH and measuring the volume of H2 liberated, or it can be oxidised to cis-cyclooctane-1,5-diol (m 73.5-74.5o). [IR: Knights & Brown J Am Chem Soc 90 5280 1968, Brown et al. J Am Chem Soc 96 7765 1974, Brown et al. J Org Chem 41 1778 1976, Brown & Chen J Org Chem 46 3978 1981, Fieser & Fieser Reagents for Org Synth 2 31, 3 24, 10 48, 15 43, 17, 49.] Borane pyridine complex [110 -51 -0] M 92.9, m 8-10o, 10-11o, b 86o/7mm, 100-1 0 1o/12mm, d 4 0.785. Dissolve it in Et2O and wash it with H2O in which it is insoluble. Evaporate the Et2O and distil the residual oil to gives better than 99.8% purity. Its vapour pressure is less than 0.1mm at room temperature. [Taylor et al. J Am Chem Soc 77 1506 1955, Beilstein 20 IV 2235.]

14044-65-6
21205-91-4
Synthesis of 9-BBN DIMER from Borane-tetrahydrofuran complex
Global( 131)Suppliers
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Shanghai Time Chemicals CO., Ltd.
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Coresyn Pharmatech Co., Ltd.
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View Lastest Price from 9-BBN DIMER manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
9-BBN DIMER pictures 2019-07-06 9-BBN DIMER
21205-91-4
$1.00 1kg 98%min Career Henan Chemical Co
  • 9-BBN DIMER pictures
  • 9-BBN DIMER
    21205-91-4
  • $1.00
  • 98%min
  • Career Henan Chemical Co

9-BBN DIMER Spectrum

9-BBN dimer,98%,crystalline 9-BBN,0.5MsolutioninTHF 9-Borabicyclo[3.3.1]nonane dimer,9-BBN Diborane(6),1,1:2,2-bis(1,5-cyclooctanediyl)- Bis-9-borabicyclo[3.3.1]nonane 9-BBN DIMER, CRYSTALLINE, 98% 9-BBN,Dimmer 9-BBN CRYSTALLINE DIMER 9-BBN DIMER 9-BORABICYCLO[3.3.1]NONANE,9-BORABICYCLO[3.3.1]NONANE DIMER DICYCLO[3,3,1]9-BORON OCTYL POLYMER 9-BBN Dimer (Technical Grade) 9-BBN Triflate Solution (0.5M in hexanes) pure 9-Borabicyclo[3.3.1]nonane dimmer 9- Borobicyclo [3.3.1] nonane dimer Lithium dodecahydro-closo-dodecaborate 9-BBN dimer, 97% (Gms) 9-(9-borabicyclo[3.3.1]nonan-9-yl)-9-borabicyclo[3.3.1]nonane 9BBN0.5MinTHF 9-BBN dimer, 97% 9-Borabicyclo[3.3.1]nonane dimer solution 0.5M 9-BORABICYCLO[3.3.1]NONANE DIMER 21205-91-4 C16H30B2 C16H28B2 Boranes Synthetic Reagents Reduction Reduction Synthetic Organic Chemistry
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