A class of inorganic or organic compounds that contain the borohydride (BH4-) anion. COD records with this CID as component. Follow these links to do a live 2D search or do a live 3D search for this compound, sorted by annotation score.

Borohydride or hydroborate is also the term used for compounds containing [BH4−nXn]−, where n is an integer from 0 to 3, for example cyanoborohydride or cyanotrihydroborate [BH3(CN)]− and triethylborohydride or triethylhydroborate [BH (CH2CH3)3]−. Borohydrides find wide use as reducing agents in organic synthesis.

但是并不完全如此，bh4-主要还是靠h过去亲核进攻，或者说是h伸过去挨着c,然后被c抓走，解离一个bh3。 而BH3却是B-H键协同和C=C配和，经历四元环状过度态完成对碳碳双键的加成。

2024年10月21日 · BH 4– (borohydride) has one boron atom and four hydrogen atoms. In BH 4– Lewis structure, there are four single bonds around the boron atom, with four hydrogen atoms attached to it, and none of the atoms has a lone pair. Also, there is a negative (-1) charge on the boron atom. Here’s how you can easily draw the BH 4– Lewis structure step by step:

2021年11月15日 · Tetrahydroborate ion (BH₄⁻): In this ion, the bonds between boron and hydrogen have a slight polarity; however, the overall geometry is symmetrical, which results in no net dipole moment. For example, in ozone (O₃), the unequal sharing of electrons between oxygen atoms creates a polar bond, leading to a dipole moment.

Beryllium borohydride is an inorganic compound with the chemical formula Be [B H 4]2. [2] Beryllium borohydride is formed by the reaction of beryllium hydride with diborane in an ether solution. It can also be formed by the reaction of beryllium chloride and lithium borohydride in a sealed tube at 120 °C: [2]

The bond between B and H in BH4- is considered polar covalent. In this molecule, boron (B) is more electronegative than hydrogen (H), causing a partial negative charge on the hydrogen atoms and a partial positive charge on the boron atom. This polarity results in B attracting more electron density towards itself, leading to a polar covalent bond.

In the Lewis structure of BF4- there are a total of 32 valence electrons. In the Lewis structure for BF4- Boron is the least electronegative atom and goes at the center of the structure. Also note that you should put the BF4- Lewis structure in brackets with as 1- on the outside to show that it is an ion with a negative one charge.

2024年10月16日 · To determine if a Lewis structure is polar, examine the molecular geometry and bond polarity. In the case of sodium borohydride (NaBH4), the Lewis structure shows sodium as the cation and BH4- as the anion. BH4- has a tetrahedral geometry, where the four hydrogen atoms are symmetrically arranged around the boron atom.

2024年10月16日 · The Lewis structure for BH4⁻ (tetrahydroborate ion) features a central boron atom bonded to four hydrogen atoms via single bonds. The arrangement results in a tetrahedral geometry around the boron atom, with an overall negative charge on the ion.