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Cas Database

Name	Borane-pyridine complex	EINECS	203-773-4
CAS No.	110-51-0	Density	0.92 g/cm³
PSA	3.88000	LogP	-0.89740
Solubility	reacts slowly with water	Melting Point	10-11 °C(lit.)
Formula	C₅H₈BN	Boiling Point	1575 ℃
Molecular Weight	92.9362	Flash Point	21 °C
Transport Information	UN 1992 3/PG 2	Appearance	clear to slightly hazy colorless to amber liquid
Safety	26-36/37-43-45-36/37/39-28A	Risk Codes	10-15-20-24/25-36/38-44-36/37/38-26
Molecular Structure		Hazard Symbols	F, T, T+
Synonyms	Pyridine,compd. with BH3 (1:1) (7CI);Pyridine, compd. with BH3 (6CI);Pyridine, compd.with borane (1:1) (8CI);Borane, compd. with pyridine (1:1) (8CI);Borane-pyridine (1:1);NSC 10219;NSC 53324;Pyridine-borane;Trihydro(pyridine)boron;	Article Data	48

Borane-pyridine complex Synthetic route

: 110-86-1
pyridine

: 16940-66-2
sodium tetrahydroborate

: 110-51-0
borane pyridine

Conditions

Conditions	Yield
With iodine In pyridine byproducts: NaI, H2; addn. of I2 to Na(BH4) in excess C5H5N, removal of excess C5H5N, extn. of residue with CCl4; evapn.;;	99%
With I2 In pyridine byproducts: NaI, H2; addn. of I2 to Na(BH4) in excess C5H5N, removal of excess C5H5N, extn. of residue with CCl4; evapn.;;	99%
With ammonium sulfate In tetrahydrofuran for 8h; Reflux;	99%

: 10544-50-0
sulfur

: 16940-66-2
sodium tetrahydroborate

: 110-51-0
borane pyridine

Conditions

Conditions	Yield
With pyridine In pyridine to NaBH4 in a flask at 10°C is added pyridine, then is slowly added sulfur (2 h); the amine is evapd., to the residue is added benzene, the solvent is after 1 d removed, elem. anal.;	96%

: 110-86-1
pyridine

: 19287-45-7
diborane

: 110-51-0
borane pyridine

Conditions

Conditions	Yield
In pentane introduction of B2H6 (freshly prepared from (C2H5)2O*BF3 and Na(BH4)) into C5H5N in pentane; removal of solvent;;	95%
In pentane introduction of B2H6 (freshly prepared from (C2H5)2O*BF3 and Na(BH4)) into C5H5N in pentane; removal of solvent;;	95%
In pyridine introduction of B2H6 into C5H5; ice-cooling, N2 atmosphere; removal of excess C5H5N in vac.;;	>99

: 110-86-1
pyridine

: tetra-amminezinc tetrahydroborate

: 110-51-0
borane pyridine

Conditions

Conditions	Yield
With hydrogen sulfide In pyridine dry H2S;;	94%
With H2S In pyridine dry H2S;;	94%
With hydrogen sulfide In pyridine dry H2S;;	94%

: 110-86-1
pyridine

: 42976-02-3
hexamethylene tetramine tetraborane

: 110-51-0
borane pyridine

Conditions

Conditions	Yield
In pyridine byproducts: (CH2)6N4*BH3; several hours at room temp.;, filtration, removal of excess of C5H5N at 50°C in high vac.;;	94%
In pyridine byproducts: (CH2)6N4*BH3; several hours at room temp.;, filtration, removal of excess of C5H5N at 50°C in high vac.;;	94%

: 110-86-1
pyridine

: 10043-11-5
ammonia borane complex

: 110-51-0
borane pyridine

Conditions

Conditions	Yield
In tetrahydrofuran for 6h; Reflux;	94%

: 16940-66-2
sodium tetrahydroborate

: 628-13-7
pyridine hydrochloride

: 110-51-0
borane pyridine

Conditions

Conditions	Yield
In pyridine byproducts: NaCl; react. in pyridine (exclusion of H2O); filtration, removal of excess C5H5N in vac. at 50°C, pptn. of excess (C5H5NH)Cl by addn. of ether;; 99.8% purity; (purification also by shaking with H2O);;	87%
In pyridine byproducts: NaCl; react. in pyridine (exclusion of H2O); filtration, removal of excess C5H5N in vac. at 50°C, pptn. of excess (C5H5NH)Cl by addn. of ether;; 99.8% purity; (purification also by shaking with H2O);;	87%
With 18-crown-6 ether In diethyl ether refluxing under Ar for 5 h; cooling, evapn. of solvent, sublimating residue under vac.;	63%

: 110-86-1
pyridine

: 61289-01-8
[(EtH2N)B8H11NHEt]

A: 110-51-0
borane pyridine

B: 327621-99-8
[(C5H5N)B8H11NHEt]

Conditions

Conditions	Yield
In benzene under N2 atm. pyridine was added to soln. ((EtH2N)B8H11NHEt) in benzene and soln. was heated at reflux for 3 h; volatile components were removed in vacuo, residue was redissolved in CH2Cl2 and chromed.;	A 16% B 61%

: μ-(CH3)2N-B2H5*nC5H5N

: 110-51-0
borane pyridine

Conditions

Conditions	Yield
In neat (no solvent) 25°C, 20min;;	54%
In neat (no solvent) 25°C, 20min;;	54%

: 110-86-1
pyridine

: B18H22

A: 110-51-0
borane pyridine

B: 6′,9′-bis(pyridine)-arachno-decaborano-10′,5′:5,6-nido-decaborane

C: 3′,8′-bis(pyridine)-arachno-octaborano-5′,6′:5,6-nido-decaborane,

D: 8′-pyridine-nido-decaborano-6′,7′:5,6-nido-decaborane

E: B18H22*C5H5N

Conditions

Conditions	Yield
In chloroform for 24h; Time; Inert atmosphere; Reflux;	A n/a B 15% C 53% D 1% E 26%

...Expand

Borane-pyridine complex Chemical Properties

The Molecular formula of PYRIDINE BORANE(110-51-0):C₅H₈BN
The Molecular Weight of PYRIDINE BORANE(110-51-0):92.93
The Molecular Structure of PYRIDINE BORANE(110-51-0) is:

Melting point:10-11 ^°C(lit.)
Boiling point:115.3 ^°C at 760 mmHg
Flash point:20 ^°C
Solubility in water:reacts slowly
Sensitive:Air & Moisture Sensitive
BRN:3674913
Enthalpy of Vaporization:35.09 kJ/mol
Appearance:Yellow liquid
Vapour Pressure: 22.8 mmHg at 25^°C
IUPAC Name: pyridin-1-ium-1-ylboranuide
Synonyms:BORANE-PYRIDINE;BORANE-PYRIDINE COMPLEX;(t-4)-boro;BORON HYDRIDE PYRIDINE;PYRIDINE BORANE;pyridine-borane (1:1);PYRIDINE BORANE COMPLEX;(beta-4)-boro

Borane-pyridine complex Uses

Uses:1
Used as a pharmaceutical intermediate
Uses:2
For the reduction and hydroboration.
Uses:3
Borane pyridine (110-51-0) is prepared to replace the mesophase boron bulk drugs.

Borane-pyridine complex Toxicity Data With Reference

1.	orl-rat LDLo:94,500 µg/kg	14KTAK Boron, Metallo-Boron Compounds and Boranes R.M. Adams,New York, NY.: Wiley,1964,693.
2.	ipr-rat LDLo:64,800 µg/kg	14KTAK Boron, Metallo-Boron Compounds and Boranes R.M. Adams,New York, NY.: Wiley,1964,693.
3.	skn-gpg LD50:200 mg/kg	14KTAK Boron, Metallo-Boron Compounds and Boranes R.M. Adams,New York, NY.: Wiley,1964,693.
4.	ipr-gpg LD50:54 mg/kg	14KTAK Boron, Metallo-Boron Compounds and Boranes R.M. Adams,New York, NY.: Wiley,1964,693.

Borane-pyridine complex Safety Profile

Poison by ingestion, skin contact, and intraperitoneal routes. Potentially hazardous rapid decomposition at 120°C/7.5 mbar. When heated to decomposition it emits toxic fumes of NO_x. See also BORON COMPOUNDS and PYRIDINE.
Hazard Codes:F,T,T+
F:
T:
T+:
Risk Statements
R10:Flammable.
R15:Contact with water liberates extremely flammable gases.
R20:Harmful by inhalation.
R24/25:Toxic in contact with skin and if swallowed .
R36/38:Irritating to eyes and skin .
R44:Risk of explosion if heated under confinement.
R36/37/38:Irritating to eyes, respiratory system and skin .
R26:Very Toxic by inhalation.
Safety Statements
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37:Wear suitable protective clothing and gloves .
S43:In case of fire, use ... (indicate in the space the precise type of fire-fighting equipment. If water increases the risk add - Never use water) .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
RIDADR:
UN 1992 3/PG 2
WGK Germany:2
RTECS:US3675000
F:1-10
HazardClass:4.3
PackingGroup:II

Borane-pyridine complex Specification

Chemical Stability:Moisture sensitive. Heat sensitive.
Conditions to Avoid:Incompatible materials, temperatures above 50°C (122°F), exposure to moist air or water.
Incompatibilities with Other Materials:Contact with water liberates highly flammable gases., Contact with water liberates highly flammable gases., acids, acid chlorides, alcohols, acid anhydrides.
Hazardous Decomposition Products: Nitrogen oxides, carbon monoxide, carbon dioxide, hydrogen gas, boron oxides.
Hazardous Polymerization:May occur.

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