American Elements is a manufacturer and supplier specializing in producing Niobium Selenide(II). Niobium Selenide(II) is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered.American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia)and follows applicable ASTM testing standards.Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.
Niobium is a Block D, Group 5, Period 5 element. The number of electrons in each of Niobium's shells is 2, 8, 18, 12, 1 and its electronic configuration is [Kr] 4d4 5s1. In its elemental form niobium's CAS number is 7440-03-1. The niobium atom has a radius of 142.9.pm and it's Van der Waals radius is 200.pm. Some niobium compounds are considered very toxic. Niobium is the basis for various barium titanate compositions used as dielectric coatings in telecommunications and small advanced electronics, such as cell phones, pagers and laptop computers. Niobium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Niobium has medical research applications. It is alloyed to produce arc-welding rods and in corrosion-resistant steel. Niobium was first discovered by Charles Hatchett in 1801. The word Niobium originates from Niobe, daughter of mythical Greek king Tantalus. See Niobium research below.
Selenium is a Block P, Group 16, Period 4 element. The number of electrons in each of Selenium's shells is 2, 8, 18, 6 and its electronic configuration is [Ar] 3d10 4s2 4p4. In its elemental form selenium's CAS number is 7782-49-2. The selenium atom has a radius of 116.pm and it's Van der Waals radius is 190.pm. The EPA does not classify selenium as carcinogenic, although selenium sulfide is a probable carcinogen. Selenates and selenites which are compounds of selenium, are highly toxic. Hydrogen selenide gas (SeH2) is the most acutely toxic compound of selenium. Selenium exhibits both photovoltaic action, where light is converted directly into electricity, and photoconductive action, where the electrical resistance decreases with increased illumination. of photocells and exposure meters for photographic use, as well as solar cells. Below its melting point, selenium is a p-type semiconductor and has many uses in electronic and solid-state applications. Selenium is available as metal and compounds with purities from 99% to 99.9999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Selenium was first discovered by Jons Berzelius in 1817. The origin of the name Selenium comes from the Greek word "Selênê" meaning moon. See selenium research below.
PACKAGING SPECIFICATIONS FOR BULK & RESEARCH QUANTITIES
Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Material Safety Data Sheet (MSDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes.
Directly Hydrothermal Growth of Single Crystal Nb(3) O(7) (OH) Nanorod Film for High Performance Dye-Sensitized Solar Cells.
Zhang H, Wang Y, Yang D, Li Y, Liu H, Liu P, Wood BJ, Zhao H.
Adv Mater. 2012 Feb 22. doi: 10.1002/adma.201104650. [Epub ahead of print]
PMID:
22354561
[PubMed - as supplied by publisher]
Synthesis of Nine-atom Deltahedral Zintl Ions of Germanium and their Functionalization with Organic Groups.
Gillett-Kunnath MM, Sevov SC.
J Vis Exp. 2012 Feb 11;(60). pii: 3532. doi: 10.3791/3532.
PMID:
22349121
[PubMed - in process]
A highly reduced cyanogen ligand derived from cyanide reductive coupling.
Fox AR, Cummins CC.
Chem Commun (Camb). 2012 Feb 27;48(25):3061-3. Epub 2012 Feb 17.
PMID:
22343665
[PubMed - in process]
Diffusion and segregation of niobium in fcc-nickel.
Connétable D, Ter-Ovanessian B, Andrieu E.
J Phys Condens Matter. 2012 Mar 7;24(9):095010. Epub 2012 Feb 9.
PMID:
22322788
[PubMed - in process]
Measurement of mass attenuation coefficients of Rhizophora spp. binderless particleboards in the 16.59-25.26keV photon energy range and their density profile using x-ray computed tomography.
Marashdeh MW, Bauk S, Tajuddin AA, Hashim R.
Appl Radiat Isot. 2012 Apr;70(4):656-62. Epub 2012 Jan 20.
PMID:
22304963
[PubMed - in process]
Syntheses and Structures of Sc(2)Nb(4-x)Sn(5), YNb(6)Sn(6), and ErNb(6)Sn(5): Exploratory Studies in Ternary Rare-Earth Niobium Stannides.
Yue CY, Lei XW.
Inorg Chem. 2012 Feb 20;51(4):2461-71. Epub 2012 Feb 2.
PMID:
22300353
[PubMed - in process]
Highly efficient catalysts for Co(ii/iii) redox couples in dye-sensitized solar cells.
Wang L, Diau EW, Wu M, Lu HP, Ma T.
Chem Commun (Camb). 2012 Feb 8;48(20):2600-2. Epub 2012 Feb 1.
PMID:
22294206
[PubMed - in process]
Seeded growth induced amorphous to crystalline transformation of niobium oxide nanostructures.
Jana S, Rioux RM.
Nanoscale. 2012 Mar 7;4(5):1782-8. Epub 2012 Jan 30.
PMID:
22286141
[PubMed - in process]
Adhesive Bonding of Ti-6Al-7Nb Alloy and Component Metals with Acidic Primers and a Tri-n-butylborane Initiated Resin.
Koizumi H, Naito K, Ishii T, Yamashita M, Yoneyama T, Matsumura H.
J Adhes Dent. 2012 Jan 11. doi: 10.3290/j.jad.a22712. [Epub ahead of print]
PMID:
22282753
[PubMed - as supplied by publisher]
Low-loss terahertz metamaterial from superconducting niobium nitride films.
Zhang CH, Wu JB, Jin BB, Ji ZM, Kang L, Xu WW, Chen J, Tonouchi M, Wu PH.
Opt Express. 2012 Jan 2;20(1):42-7. doi: 10.1364/OE.20.000042.
PMID:
22274327
[PubMed - in process]
Synthesis and characterization of InNbO? nanopowder for gas sensors.
Balamurugan C, Vijayakumar E, Subramania A.
Talanta. 2012 Jan 15;88:115-20. Epub 2011 Nov 26.
PMID:
22265476
[PubMed - in process]
Synthesis, characterization and biological activity of a niobium-substituted-heteropolytungstate on hepatitis B virus.
Zhang H, Qi Y, Ding Y, Wang J, Li Q, Zhang J, Jiang Y, Chi X, Li J, Niu J.
Bioorg Med Chem Lett. 2012 Feb 15;22(4):1664-9. Epub 2012 Jan 2.
PMID:
22264474
[PubMed - in process]
The mechanism of hydroaminoalkylation catalyzed by group 5 metal binaphtholate complexes.
Reznichenko AL, Hultzsch KC.
J Am Chem Soc. 2012 Feb 15;134(6):3300-11. Epub 2012 Feb 7.
PMID:
22264172
[PubMed - in process]
cyclo-Tetra-?-oxido-tetra-kis-[(acetyl-acetonato-?O,O')bis-(ethano-lato-?O)niobium(V)].
Herbst L, Visser HG, Roodt A, Muller TJ.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1669-70. Epub 2011 Nov 5.
PMID:
22199493
[PubMed - in process]
Asymmetric Split-Vacancy Defects in SiC Polytypes: A Combined Theoretical and Electron Spin Resonance Study.
Ivády V, Gällström A, Son NT, Janzén E, Gali A.
Phys Rev Lett. 2011 Nov 4;107(19):195501. Epub 2011 Nov 2.
PMID:
22181623
[PubMed - in process]
New iso-propoxides, tert-butoxides and neo-pentoxides of niobium(V): synthesis, structure, characterization and stabilization by trifluoroheteroarylalkenolates and pyridine ligands.
Appel L, Fiz R, Tyrra W, Mathur S.
Dalton Trans. 2012 Feb 21;41(7):1981-90. Epub 2011 Dec 16.
PMID:
22180863
[PubMed - in process]
Structural, electronic and magnetic effects of Al-doped niobium clusters: a density functional theory study.
Wang HQ, Li HF, Wang JX, Kuang XY.
J Mol Model. 2011 Dec 7. [Epub ahead of print]
PMID:
22146984
[PubMed - as supplied by publisher]
The microwave cavity perturbation technique for contact-free and in situ electrical conductivity measurements in catalysis and materials science.
Eichelbaum M, Stösser R, Karpov A, Dobner CK, Rosowski F, Trunschke A, Schlögl R.
Phys Chem Chem Phys. 2012 Jan 21;14(3):1302-12. Epub 2011 Dec 7.
PMID:
22146931
[PubMed - in process]
Hydrolysis of disaccharides over solid acid catalysts under green conditions.
Marzo M, Gervasini A, Carniti P.
Carbohydr Res. 2012 Jan 10;347(1):23-31. Epub 2011 Oct 17.
PMID:
22127325
[PubMed - in process]
Enhanced Photon Generation in a Nb/n-InGaAs/p-InP Superconductor/Semiconductor-Diode Light Emitting Device.
Sasakura H, Kuramitsu S, Hayashi Y, Tanaka K, Akazaki T, Hanamura E, Inoue R, Takayanagi H, Asano Y, Hermannstädter C, Kumano H, Suemune I.
Phys Rev Lett. 2011 Oct 7;107(15):157403. Epub 2011 Oct 6.
PMID:
22107319
[PubMed - in process]
Recent Research & Development for Selenium
Toenail selenium status and the risk of Barrett's esophagus: the Netherlands Cohort Study.
Steevens J, Schouten LJ, Driessen AL, Huysentruyt CJ, Keulemans YC, Goldbohm RA, van den Brandt PA.
Cancer Causes Control. 2010 Oct 10. [Epub ahead of print]PMID: 20936529 [PubMed - as supplied by publisher]Related citations
Promotion of Growth in Mungbean (Phaseolus aureus Roxb.) by Selenium is Associated with Stimulation of Carbohydrate Metabolism.
Malik JA, Kumar S, Thakur P, Sharma S, Kaur N, Kaur R, Pathania D, Bhandhari K, Kaushal N, Singh K, Srivastava A, Nayyar H.
Biol Trace Elem Res. 2010 Oct 9. [Epub ahead of print]PMID: 20936436 [PubMed - as supplied by publisher]Related citations
Transition metal chemistry of cyclodiphosphanes containing phosphine and amide-phosphine functionalities: Formation of a stable dipalladium(II) complex containing a Pd-P s-bond.
Balakrishna MS, Venkateswaran R, Mague JT.
Dalton Trans. 2010 Oct 8. [Epub ahead of print]PMID: 20936211 [PubMed - as supplied by publisher]Related citations
Associations between blood metals and fecundity among women residing in New York State.
Bloom MS, Louis GM, Sundaram R, Kostyniak PJ, Jain J.
Reprod Toxicol. 2010 Oct 6. [Epub ahead of print]PMID: 20933593 [PubMed - as supplied by publisher]Related citations
The protective role of selenium in recalcitrant Acer saccharium L. seeds subjected to desiccation.
Pukacka S, Ratajczak E, Kalemba E.
J Plant Physiol. 2010 Oct 6. [Epub ahead of print]PMID: 20933296 [PubMed - as supplied by publisher]Related citations
Trace element concentrations in nesting flatback turtles (Natator depressus) from Curtis Island, Queensland, Australia.
Ikonomopoulou MP, Olszowy H, Limpus C, Francis R, Whittier J.
Mar Environ Res. 2010 Sep 25. [Epub ahead of print]PMID: 20933265 [PubMed - as supplied by publisher]Related citations
Correlation between serum selenium level and febrile seizures.
Mahyar A, Ayazi P, Fallahi M, Javadi A.
Pediatr Neurol. 2010 Nov;43(5):331-4.PMID: 20933176 [PubMed - in process]Related citations
Anti-Tumor Activity of Aloe vera Against DMBA/Croton Oil-Induced Skin Papillomagenesis in Swiss Albino Mice.
Saini M, Goyal PK, Chaudhary G.
J Environ Pathol Toxicol Oncol. 2010;29(2):127-35.PMID: 20932247 [PubMed - in process]Related citations
Aluminosilicate Relatives: Chalcogenoaluminogermanates Rb(3)(AlQ(2))(3)(GeQ(2))(7) (Q = S, Se).
Rothenberger A, Shafaei-Fallah M, Kanatzidis MG.
Inorg Chem. 2010 Oct 8. [Epub ahead of print]PMID: 20932019 [PubMed - as supplied by publisher]Related citations
A Nutrient Approach to Prostate Cancer Prevention: The Selenium and Vitamin E Cancer Prevention Trial (SELECT).
Dunn BK, Richmond ES, Minasian LM, Ryan AM, Ford LG.
Nutr Cancer. 2010 Oct;62(7):896-918.PMID: 20924966 [PubMed - in process]Related citations
Serum levels of selenium in patients with breast cancer before and after treatment of external beam radiotherapy.
Franca CA, Nogueira CR, Ramalho A, Carvalho AC, Vieira SL, Penna AB.
Ann Oncol. 2010 Oct 5. [Epub ahead of print]PMID: 20924074 [PubMed - as supplied by publisher]Related citations
Kenji Soda--researching enzymes with the spirit of an alpinist.
Yoshimura T, Mihara H, Ohshima T, Tanizawa K.
J Biochem. 2010 Oct;148(4):371-9.PMID: 20924059 [PubMed - in process]Related citations
Inhibitory effect of arsenic on aerobic gut flora in rat.
Choudhry ZK, Misbahuddin M, Hosain AK, Saleh AA.
Bangladesh Med Res Counc Bull. 2009 Dec;35(3):79-83.PMID: 20922909 [PubMed - in process]Related citations
[Endemic and biogeochemical features of the territory of Chuvash Republic]
[No authors listed]
Vestn Ross Akad Med Nauk. 2010;(8):40-6. Russian. PMID: 20922843 [PubMed - in process]Related citations
Interaction of uranyl with Se(IV) and Se(VI) in aqueous acid solutions by means of capillary electrophoresis.
Sladkov V.
Electrophoresis. 2010 Oct 4. [Epub ahead of print]PMID: 20922762 [PubMed - as supplied by publisher]Related citations
Ensemble Modeling Coupled with Six Element Concentrations in Human Blood for Cancer Diagnosis.
Chen H, Tan C, Wu T.
Biol Trace Elem Res. 2010 Oct 5. [Epub ahead of print]PMID: 20922500 [PubMed - as supplied by publisher]Related citations
Use of dietary vitamin E and selenium (Se) to increase the shelf life of modified atmosphere packaged light lamb meat.
Ripoll G, Joy M, Muñoz F.
Meat Sci. 2010 Sep 18. [Epub ahead of print]PMID: 20920835 [PubMed - as supplied by publisher]Related citations
Impacts of maternal selenium and nutritional level on growth, adiposity, and glucose tolerance in female offspring in sheep.
Vonnahme KA, Luther JS, Reynolds LP, Hammer CJ, Carlson DB, Redmer DA, Caton JS.
Domest Anim Endocrinol. 2010 Nov;39(4):240-8. Epub 2010 Jul 25.PMID: 20920781 [PubMed - in process]Related citations
Mutations disrupting selenocysteine formation cause progressive cerebello-cerebral atrophy.
Agamy O, Ben Zeev B, Lev D, Marcus B, Fine D, Su D, Narkis G, Ofir R, Hoffmann C, Leshinsky-Silver E, Flusser H, Sivan S, Söll D, Lerman-Sagie T, Birk OS.
Am J Hum Genet. 2010 Oct 8;87(4):538-44.PMID: 20920667 [PubMed - in process]Related citations
Developmental toxicity of selenium to Dolly Varden char (Salvelinus malma).
McDonald BG, Debruyn AM, Elphick JR, Davies M, Bustard D, Chapman PM.
Environ Toxicol Chem. 2010 Aug 3. [Epub ahead of print]PMID: 20891017 [PubMed - as supplied by publisher]Related citations
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Niobium is a Block D, Group 5, Period 5 element. The number of electrons in each of Niobium's shells is 2, 8, 18, 12, 1 and its electronic configuration is [Kr] 4d4 5s1. In its elemental form niobium's CAS number is 7440-03-1. The niobium atom has a radius of 142.9.pm and it's Van der Waals radius is 200.pm. Some niobium compounds are considered very toxic. Niobium is the basis for various barium titanate compositions used as dielectric coatings in telecommunications 
and small advanced electronics, such as cell phones, pagers and laptop computers. Niobium is available as metal and compounds
with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Niobium has medical research applications. It is alloyed to produce arc-welding rods and in corrosion-resistant steel. Niobium was first discovered by Charles Hatchett in 1801. The word Niobium originates from Niobe, daughter of mythical Greek king Tantalus. See Niobium research below. 
Selenium is a Block P, Group 16, Period 4 element. The number of electrons in each of Selenium's shells is 2, 8, 18, 6 and its electronic configuration is [Ar] 3d10 4s2 4p4. In its elemental form selenium's CAS number is 7782-49-2. The selenium atom has a radius of 116.pm and it's Van der Waals radius is 190.pm. The EPA does not classify selenium as carcinogenic, although selenium sulfide 
is a probable carcinogen. Selenates and selenites which are compounds of selenium, are highly toxic. Hydrogen selenide gas (SeH2) is the most acutely toxic compound of selenium. Selenium exhibits both photovoltaic action, where light is converted directly into electricity, and photoconductive action, where the electrical resistance decreases with increased illumination. of photocells and exposure meters for photographic use, as 
well as solar cells. Below its melting point, selenium is a p-type semiconductor and has many uses in electronic and solid-state applications. Selenium is available as metal and compounds with purities from 99% to 99.9999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Selenium was first discovered by Jons Berzelius in 1817. The origin of the name Selenium comes from the Greek word "Selênê" meaning moon. See selenium research below.
