CAS: 2172-02-3; Hafnium(4+),2-Methylpropan-2-Olate

📜Hf(Otbu)2(Thd)2 反应 72.0H,反应生成Hf(Otbu)(Thd)3,叔丁醇铪
参考文献:锆和铪叔-Butoxides和叔-Butoxo-β二酮络合物-隔离,结构表征和应用在三维金属氧化物纳米结构的一步法合成
标题:锆和铪叔-Butoxides和叔-Butoxo-β二酮络合物-隔离,结构表征和应用在三维金属氧化物纳米结构的一步法合成
摘要:将纯商业化的zr(o T Bu)4长期保存在密封的安瓿瓶中会导致zr 3 O(o T Bu)10(1)的新高对称相结晶.用2,2,6,6,-四甲基-3,5-庚二酮(hthd)修饰zr(o T Bu)4和hf(o T Bu)4取决于化学计量,产生两种类型的衍生物m(o吨丁基)2(thd)2(2,3)和m(o吨卜)(thd)3(4,5)m = Zr的(2,4),Hf(3,5),其已全部通过NMR和质谱光谱研究和4及5也由完整x射线单晶研究.鉴于它们的x射线反射率差,后者无法进行2和3测试.向3中添加少量n-C 5 H 11 Oh导致分离出不寻常的杂配物hf 2(oh)(o N C 5 H 11)(o T Bu)2(thd)4(6).化合物的热分解1和3在氮气氛中进行了研究用于通过tga-Ftir方法不同的热制度,在所有情况下显露四方zro形成2和单斜晶的hfo 2分别与异丁烯,丁醇和水一起为1和同样的混合物也包括hthd
Doi:10.1016/j.Poly.2013.01.046

专利信息

专利号:US-2022228295-A1
优先权日:2020-09-30
标 题 :Synthesis of Refractory Transition Metal-Carbide Fibers
发明人：Treadwell LaRico Juan; NICHOLAS JAMES; BELL NELSON S
权利人:NAT TECH & ENG SOLUTIONS SANDIA LLC
摘要:Refractory transition metal-carbide (RTM-C) fibers were synthesized via the Forcespinningâ„¢ method. This method allows for simple and rapid synthesis of these RTM-C fibers with the ability to make grams of fibers quickly.

专利号:US-7829654-B2
优先权日:2004-05-11
标 题 :Method for producing elastomeric copolyesters
发明人：KAEMPF RUDOLF
权利人:LURGI ZIMMER GMBH
摘要:A process for continuous or discontinuous synthesis of elastomeric copolyesters from polybutylene terephthalate (PBT) and polyoxytetramethylene glycol is described in which the tetrahydrofuran (THF) obtained as a byproduct in synthesis of polybutylene terephthalate from 1,4-butanediol is rectified and then reacted by ring-opening polymerization to form polyoxytetramethylene glycol which condenses with the free or esterified carboxyl groups of PBT to form the copolyester, whereby chain termination and catalyst deactivation are accomplished by adding 1,4-butanediol without separating the catalyst.

专利号:US-2018179112-A1
优先权日:2016-10-27
标题:Single-source synthesis of ceramic oxide nanoparticles

专利号:US-10407347-B2
优先权日:2016-10-27
标 题 :Single-source synthesis of ceramic oxide nanoparticles
发明人：BOYLE TIMOTHY J; CHAN RANA; SEARS JEREMIAH MATTHEW; HERNANDEZ-SANCHEZ BERNADETTE A
权利人:NAT TECH & ENG SOLUTIONS SANDIA LLC
摘要:The tris(trimethylsilyl)silanol (H-SST) ligand can be reacted with a Group 4 or 5 metal alkoxides in a solvent to form an SST-modified metal alkoxide precursor. Exemplary Group 4 precursors include [Ti(SST) 2 (OR) 2 ] (OR=OPr i , OBu t , ONep); [Ti(SST) 3 (OBu n )]; [Zr(SST) 2 (OBu t ) 2 (py)]; [Zr(SST) 3 (OR)] (OR=OBu t , ONep); [Hf(SST) 2 (OBu t ) 2 ]; and [Hf(SST) 2 (ONep) 2 (py) n ] (n=1, 2), where OPr i =OCH(CH 3 ) 2 , OBu t =OC(CH 3 ) 3 , OBu n =O(CH 2 ) 3 CH 3 , ONep=OCH 2 C(CH 3 ) 3 , and py=pyridine. Exemplary Group 5 precursors include [V(SST) 3 (py) 2 ]; [Nb(SST) 3 (OEt) 2 ]; [Nb(O)(SST) 3 (py)]; 2[H][(Nb(μ-O) 2 (SST)) 6 (μ 6 -O)]; [Nb 8 O 10 (OEt) 18 (SST) 2 .â…•Na 2 O]; [Ta(SST)(μ-OEt)(OEt) 3 ] 2 ; and [Ta(SST) 3 (OEt) 2 ]; where OEt=OCH 2 CH 3 . When thermally processed, the precursors can form unusual core-shell nanoparticles. For example, HfO 2 /SiO 2 core/shell nanoparticles have demonstrated resistance to damage in extreme irradiation and thermal environments.

专利号:US-8920675-B2
优先权日:2010-10-27
标题 :Synthesis, capping and dispersion of nanocrystals
发明人：XU WEI; GONEN WILLIAMS ZEHRA SERPIL; WANG YIJUN; WIACEK ROBERT J; BAI XIA; GOU LINFENG; THOMAS SELINA I; XU JUN
权利人:XU WEI; GONEN WILLIAMS ZEHRA SERPIL; WANG YIJUN; WIACEK ROBERT J; BAI XIA; GOU LINFENG; THOMAS SELINA I; XU JUN; PIXELLIGENT TECHNOLOGIES LLC
摘要:Preparation of semiconductor nanocrystals and their dispersions in solvents and other media is described. The nanocrystals described herein have small (1-10 nm) particle size with minimal aggregation and can be synthesized with high yield. The capping agents on the as-synthesized nanocrystals as well as nanocrystals which have undergone cap exchange reactions result in the formation of stable suspensions in polar and nonpolar solvents which may then result in the formation of high quality nanocomposite films.

专利号:US-9856581-B2
优先权日:2010-04-23
标 题 :Synthesis, capping and dispersion of nanocrystals
发明人：GONEN WILLIAMS ZEHRA SERPIL; WANG YIJUN; WIACEK ROBERT J; BAI XIA; GOU LINFENG; THOMAS SELINA I; XU WEI; XU JUN; PATEL RAKESH
权利人:PIXELLIGENT TECH LLC
摘要:Preparation of semiconductor nanocrystals and their dispersions in solvents and other media is described. The nanocrystals described herein have small (1-10 nm) particle size with minimal aggregation and can be synthesized with high yield. The capping agents on the as-synthesized nanocrystals as well as nanocrystals which have undergone cap exchange reactions result in the formation of stable suspensions in polar and nonpolar solvents which may then result in the formation of high quality nanocomposite films.