2021年10月14日 · Difluoroborane | BF2H | CID 139565 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

四羟基二硼主要用于Suzuki偶联中合成医药中间体。 四羟基二硼的最早合成可以追溯到1955 年，Wartik采用在液态三氯化硼中插入锌电极生成四氯化二硼，接着四氯化二硼与水反应首先生成四羟基二硼，随后加热至220℃脱水生成 (BO)X；1961年McCloskey采用0℃下，将定量盐酸滴加入四 (二甲胺基)联硼和水混合物中生成四羟基二硼，收率56％。 在此后的近五十年内就几乎再没有文献进行公开方法报道，直至2012年Molander 再次提及采用后者方法合成四羟基二硼。

1981年7月15日 · HBF2, on the other hand, possesses an empty pir orbital on boron, and in this sense is actually electron deficient. The lowest unoccupied orbital, the 2b1ir orbital, is predicted from the SCF output to occur at 3.92 eV, and thus does not qualify as a low-lying orbital that could cause some Koopmans problems [40];.

Vib. sym. No. Approximate type of mode cm-1 Med. Method References; a 1: 1: BH stretch: 2620.8 ± 0.5: gas: IR: Coyle, Ritter, et al., 1964 Perec and Becka, 1965

ChemSpider record containing structure, synonyms, properties, vendors and database links for Difluoroborane, LRZMJFRZMNWFKE-UHFFFAOYSA-N

1973年10月1日 · HBF2 was first synthesized by Coyle et al. [ 14], by pyrolysis of B2H6 or B4H10 with BF3 at 100°C, or from BF3 and dialkoxyboranes at 0°C for 30 minutes. The compound was found to be relatively stable, and proton magnetic resonance and infrared spectra were obtained.

1981年7月15日 · For the first time the infrared spectrum of F 2 BOH in the gas phase has been observed. After optimizing the conditions for the synthesis we have been able to obtain high-resolution (2.4–3.3×10 −3 cm −1) infrared spectra in the ν 8, ν 9, and ν 4 regions with both natural and 11 B monoisotopic material.

2021年5月7日 · Difluoroboryl radical | BF2 | CID 139622 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

HBF1 和 HBF2 编码开花抑制因子，降低水稻叶片中 Ehd1 、 Hd3a 和 RFT1 的表达。 Hd3a 和 RFT1 都能够与OsFD1、Gf14c形成标准的"成花素激活复合物 (FAC)"来促进 Ehd1 表达，也可通过与HBFs (HBF1 或HBF2)相互作用来抑制 Ehd1 表达，HBF1能直接与 Ehd1 启动子结合。 Hd3a可直接与HBFs互作，而RFT1需通过GF14c间接与HBFs互作。 Hd3a和RFT1蛋白转运到分生组织后，可通过形成标准FAC促进靶基因 OsMADS 的转录，HBF1可通过形成抑制性FAC来抑制相 …

HBF2+ Formula: BF 2 H + Molecular weight: 49.815; Information on this page: Notes; Other data available: Vibrational and/or electronic energy levels; Options: Switch to calorie-based units