14457-87-5

Usage

Uses

1. Used in Security Applications:
Cerium(III) Bromide Hexahydrate is used as a detection agent for security purposes, particularly in the detection of γ-ray scintillation in nuclear non-proliferation testing. Its ability to absorb and react to radiation makes it a valuable tool in ensuring safety and preventing unauthorized access to nuclear materials.
2. Used in Medical Imaging:
In the medical field, Cerium(III) Bromide Hexahydrate serves as a contrast agent in medical imaging. Its properties allow for better visualization of internal structures, enhancing the accuracy of diagnostic procedures and improving patient care.
3. Used in Geophysics Detectors:
Cerium(III) Bromide Hexahydrate is utilized as a component in geophysics detectors, where it aids in the detection and measurement of various geological phenomena, such as earthquakes and volcanic activity.
4. Used in Environmental Remediation:
CERIUM(III)BROMIDE HEXAHYDRATE is employed in environmental remediation efforts, where it helps in the detection and monitoring of pollutants, enabling more effective and targeted clean-up strategies.
5. Used in Oil Exploration:
Cerium(III) Bromide Hexahydrate is also used in the oil exploration industry, where it assists in the detection of oil reserves and aids in the development of more efficient extraction methods.

InChI:InChI=1/3BrH.Ce/h3*1H;/q;;;+3/p-3

Upstream product

• 10035-10-6 hydrogen bromide 
• 558-13-4 carbon tetrabromide 
• 10025-67-9 disulfur dichloride 
• 7726-95-6 bromine 
• 10097-32-2 bromine 
• 7727-15-3 aluminium bromide 
• 7440-45-1 cerium 

Downstream Products

• 130725-34-7 bromocerium(III) tetraphenylporhin 
• 121461-95-8 Ce(C₆H₅C₃N₂(CH₃)2ONHCOCH₃)2Br₃ 

Relevant academic research and scientific papers

Phase diagram and electrical conductivity of the CeBr3-RbBr binary system

Phase equilibrium in the CeBr3-RbBr binary system was established from differential scanning calorimetry (DSC). This system has three compounds Rb3CeBr6, Rb2CeBr5 and RbCe2Br7 and two eutectics located at (x = 0.141; 858 K) and (x = 0.528; 762 K), respectively. Rb3CeBr6 forms at 614 K, undergoes a solid-solid phase transition at 695 K and melts congruently at 966 K. Rb2CeBr5 melts incongruently at 830 K and RbCe2Br7 at 741 K. The electrical conductivity of CeBr3-RbBr liquid mixtures was measured down to temperatures below solidification over the whole composition range. Results obtained are discussed in term of possible complex formation.

Variations modulo 4-4+, 4+3 -3+4-, 4-5+, 5 -4+4-5+4-4+ with rare earth carbide halides

The new compounds Pr8(C2)4Cl5 (1), Pr14(C2)7Cl9 (2), Pr 22(C2)11Cl14 (3), Ce 2(C2)Cl (4), La2(C2)Br (5), Ce 2(C2)Br (6), Pr2(C2)Br (7), Ce 18(C2)9Cl11 (8), and Ce 26(C2)13Cl16 (9) were prepared by heating mixtures of LnX3, Ln and carbon or in an alternatively way LnX3, and Ln2C3-x in appropriate amounts for several days between 750 and 1200 °C. The crystal structures were investigated by X-ray powder analysis (5-7) and/or single crystal diffraction (1-4, 8, 9). Pr8(C2)4Cl5 crystallizes in space group P21/c with the lattice parameters a = 7.6169(12), b = 16.689(2), c = 6.7688(2) A, β = 103.94(1) °, Pr14(C2)7Cl9 in Pc with a = 7.6134(15), b = 29.432(6), c = 6.7705(14) A, β = 104.00(3) °, Pr22(C2)11Cl14 in P21/c with a = 7.612(2), b = 46.127(9), c = 6.761(1) A, β = 103.92(3) °, Ce2(C2)2Cl in C2/c with a = 14.573(3), b = 4.129(1), c = 6.696(1) A, β = 101.37(3) °, La 2(C2)2Br in C2/c with a = 15.313(5), b = 4.193(2), c = 6.842(2) A, β = 100.53(3) °, Ce2(C 2)2Br in C2/c with a = 15.120(3), b = 4.179(1), c = 6.743(2) A, β = 101.09(3) °, Pr2(C2) 2Br in C2/c with a = 15.054(5), b = 4.139(1), c = 6.713(3) A, β = 101.08(3) °, Ce18(C2)9Cl 11 in Pβar{1}$ with a = 6.7705(14), b = 7.6573(15), c = 18.980(4) A,α = 88.90(3) °, β = 80.32(3) °, γ = 76.09(3) °, and Ce26(C2)13Cl16 in P21/c with a = 7.6644(15), b = 54.249(11), c = 6.7956(14) A, β = 103.98(3) ° The crystal structures are composed of Ln octahedra centered by C2 dumbbells. Such Ln6(C 2)-octahedra are condensed into chains which are joined into undulated sheets. In compounds 1-4 three and four up and down inclined ribbons alternate (4+4-, 4+3-3 +4-, 4+4-3+4 -4+3-), in compounds 8 and 9 four and five (4+5-, 5+4-4+5 -4+4-), and in compounds 4-7 one, one ribbons (1+1-) are present. The Ln-(C2)-Ln layers are separated by monolayers of X atoms. Copyright

Phase diagram and electrical conductivity of the CeBr3-CsBr binary system

Phase equilibrium in the CeBr3-CsBr binary system was established from differential scanning calorimetry (DSC). This system includes three compounds, namely Cs3CeBr6, Cs2CeBr 5 and CsCe2Br

Thermal and conductometric studies of the CeBr3-MBr binary systems (M = Li, Na)

DSC was used to investigate phase equilibrium in the CeBr3-MBr (M = Li, Na) systems. They represent typical examples of simple eutectic systems. The eutectic composition and eutectic temperature, x(CeBr3) = 0.249, Teut = 7

Structural characterization of methanol substituted lanthanum halides

The first study into the alcohol solvation of lanthanum halide [LaX3] derivatives as a means to lower the processing temperature for the production of the LaBr3 scintillators was undertaken using methanol (MeOH). Initially the de-hydration of {[La(μ-Br)(H2O)7](Br)2}2 (1) was investigated through the simple room temperature dissolution of 1 in MeOH. The mixed solvate monomeric [La(H2O)7(MeOH)2](Br)3 (2) compound was isolated where the La metal center retains its original 9-coordination through the binding of two additional MeOH solvents but necessitates the transfer of the innersphere Br to the outersphere. In an attempt to in situ dry the reaction mixture of 1 in MeOH over CaH2, crystals of [Ca(MeOH)6](Br)2 (3) were isolated. Compound 1 dissolved in MeOH at reflux temperatures led to the isolation of an unusual arrangement identified as the salt derivative {[LaBr2.75·5.25(MeOH)]+0.25 [LaBr3.25·4.75(MeOH)]-0.25} (4). The fully substituted species was ultimately isolated through the dissolution of dried LaBr3 in MeOH forming the 8-coordinated [LaBr3(MeOH)5] (5) complex. It was determined that the concentration of the crystallization solution directed the structure isolated (4 concentrated; 5 dilute) The other LaX3 derivatives were isolated as [(MeOH)4(Cl)2La(μ-Cl)]2 (6) and [La(MeOH)9](I)3·MeOH (7). Beryllium Dome XRD analysis indicated that the bulk material for 5 appear to have multiple solvated species, 6 is consistent with the single crystal, and 7 was too broad to elucidate structural aspects. Multinuclear NMR (139La) indicated that these compounds do not retain their structure in MeOD. TGA/DTA data revealed that the de-solvation temperatures of the MeOH derivatives 4-6 were slightly higher in comparison to their hydrated counterparts.

Thermodynamic and transport properties of M3CeBr6 compounds (M = K, Rb, Cs)

Systematic trends in the thermodynamic properties of congruently meltingM3CeBr6 compounds (molar enthalpies of the solid- solid phase transitions, molar heat capacity) following those found for another M 3LnX6 compounds (Ln = lanthanide; X = halide, M = Li, Na, K, Rb, Cs) were evidenced. These data were complemented by electrical conductivity measurements over the wide temperature range. The results obtained clearly show that the M3CeBr6 compounds can be divided into two groups. The first one with K3CeBr6 compound having a single high temperature modification of cubic, elpasolite-type, crystal structure, and the second one with Rb3CeBr6 and Cs 3CeBr6 compounds having both low- (monoclinic, Cs 3BiCl6-type) and high-temperature (cubic, elpasolite-type) modifications. Transition from low- to high-temperature modification of these compounds is non-reconstructive phase transition. Within the two groups, the thermodynamic and transport properties of M3CeBr6 compounds are well correlated with their crystal structure. These results suggest different order-disorder mechanisms of the alkali metal cations whereas the CeBr6 octahedra, forming anionic sublattice, retain theirnormal lattice positions.

Rare earth ethenide-halides Ln2n+6(C2) n+4X2n+2: Preparation, crystal structure, intergrowth and twinning

Preparation, crystal structure, intergrowth and twinning of the compounds La10(C2)6Br6, Ce10(C 2)Br6 and Gd10(C2) 6(Cl6 are described.

Rare earth halides Ln4X5Z. Part 1: C and/or C 2 in Ln4X5Z

The compounds Ln4X5Cn (Ln = La, Ce, Pr; X = Br, I and 1.0 3, Ln metal and graphite in sealed Ta-ampoules at temperatures 850 °C 4I5C1.5: a = 19.849(4) A, b = 4.1410(8) A, c = 8.956(2) A, β = 103.86(3)°, La 4I5C2.0: a = 19.907(4) A, b = 4.1482(8) A, c = 8.963(2) A, β = 104.36(3)°, Ce4 Br 5C1.0: a = 18.306(5) A, b = 3.9735(6) A, c = 8.378(2) A, β=104.91(2)°, Ce4Br5C 1.5: a = 18.996(2) A, b = 3.9310(3)A, c = 8.282(7) A, β = 106.74(1)°, Pr4 Br5C1.3: a = 18.467(2) A, b = 3.911(1) A, c = 8.258(7) A, β = 105.25(1)° and Pr4Br5C1.5: a = 19.044(2) A, b = 3.9368(1) A, c = 8.254(7) A, β = 106.48(1)°. In the crystal structure the lanthanide metals are connected to Ln 6-octahedra centered by carbon atoms or C2-groups. The Ln6-octahedra are condensed via opposite edges to chains and surrounded by X atoms which interconnect the chains. A part n of isolated C-atoms is substituted by 1-n C2-groups. The C-C distances range between 1.26 and 1.40 A. In the ionic formulation (Ln3+) 4(X-)5(C4-)n(C 2 m-)1-n · e- with 0 22-, C24- C26-), there are 1 - 5 electrons centered in metal-metal bonds.

Systematics and anomalies in rare earth/aluminum bromide vapor complexes: Thermodynamic properties of the vapor complexes LnAl3Br12 from Ln = Sc to Ln = Lu

Systematics and anomalies in the rare earth/aluminum bromide vapor complexes have been investigated by the phase equilibrium-quenching experiments. The measurements suggest that the LnAl3Br12 complexes are the predominant vapor compl

M3NS3 (M = La - Nd, Sm, Gd - Dy): Structure and magnetism of 3:1:3-type nitride sulfides of trivalent lanthanides

Nitride sulfides of the trivalent lanthanides with the composition M 3NS3 (M = La - Nd, Sm, Gd - Dy) can be prepared by the oxidation of the respective lanthanide metal with sulfur, sodium azide (NaN 3), and the corresponding lanthanide tribromide (MBr3) when an additional flux (NaBr) is used. Temperature ranges from 800 to 900 °C for the thermal treatment of the reaction mixtures in evacuated silica tubes secure the formation of bright to dark brown, transparent, lath shaped single-crystals. The orthorhombic crystal structure (Pnma, Z = 4) was determined from single-crystal X-ray diffraction data (La3NS3: a = 1215.13(5), b = 415.90(2), c = 1322.12(5) pm, Ce3NS3: a = 1206.28(4), b = 410.16(1), c = 1307.18(5) pm, Pr3NS3: a = 1205.45(7), b = 405.35(2), c = 1297.58(8) pm, Nd3NS3: a = 1207.82(5), b = 401.31(1), c = 1295.20(4) pm, Sm3NS3: a = 1201.58(6), b = 394.84(2), c = 1285.63(7) pm, Gd3NS3: a = 1197.17(7), b = 388.22(3), c = 1286.92(8) pm, Tb3NS3: a = 1191.62(7), b = 385.07(3), c = 1282.44(8) pm, and Dy3NS3: a = 1187.66(7), b = 382.55(3), c = 1276.77(8) pm). There are three crystallographically different M3+ cations present in coordination of both the N3- and the S2- anions. However, [NM 4]9+ tetrahedra connected via two common corners (c) to form linear chains ∞1{[N(M1)1/1 t(M2)1/1t(M3)2/2c] 6+} along [010] build up the main structural feature. A non-linear behaviour for the decreasing lattice constants of the pseudo-isotypic series from La3NS3 to Dy3NS3 concerning the a- and c-axes is observed along with the lanthanoid contraction caused by the diminishing coordination sphere of (M1)3+ (CN = 7) and (M3) 3+ (CN = 7) moving from the light to the heavier lanthanides. Curie-Weiss-type magnetic behaviour for Dy3NS3 with μeff = 10.3(1) μB for DyN1/3S corresponding to a 6H15/2 groundstate for Dy3+ at higher temperatures and antiferromagnetic ordering of the Dy3+ moments below 5 K is observed.