Potassium trispyrazolylborate, commonly abbreviated KTp, is the potassium salt with the formula :. This salt is the source of the

trispyrazolylborate The trispyrazolylborate ligand, abbreviated Tp−, is an anionic Denticity, tridentate and tripodal ligand. Trispyrazolylborate refers specifically to the anion

B(C3N2H3)3 B, or b, is the second letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''bee'' (pronounced ), plural ''bees''. It represent ...

��. However, the term can also be used to refer to derivatives having s ...

ligand In coordination chemistry, a ligand is an ion or molecule with a functional group that binds to a central metal atom to form a coordination complex. The bonding with the metal generally involves formal donation of one or more of the ligand's el ...

. KTp is a white crystalline solid that is soluble in

polar solvents A solvent (from the Latin '' solvō'', "loosen, untie, solve") is a substance that dissolves a solute, resulting in a solution. A solvent is usually a liquid but can also be a solid, a gas, or a supercritical fluid. Water is a solvent for pola ...

alcohols In chemistry, an alcohol (), is a type of organic compound that carries at least one hydroxyl () functional group bound to a Saturated and unsaturated compounds, saturated carbon atom. Alcohols range from the simple, like methanol and ethanol ...

, and

water Water is an inorganic compound with the chemical formula . It is a transparent, tasteless, odorless, and Color of water, nearly colorless chemical substance. It is the main constituent of Earth's hydrosphere and the fluids of all known liv ...

. The synthesis of KTp involves

potassium borohydride Borohydride refers to the anion , which is also called tetrahydroborate or more commonly tetrahydrobiopterin, and its salts. Borohydride or hydroborate is also the term used for compounds containing , where ''n'' is an integer from 0 to 3, for ex ...

and

pyrazole Pyrazole is an organic compound with the chemical formula, formula . It is a heterocycle characterized as an azole with a 5-membered ring of three carbon atoms and two adjacent nitrogen atoms, which are in Arene substitution pattern, ortho-substi ...

without a solvent. : The tris(pyrazolyl)borate forms octahedral coordination compounds with the formula M psub>2 with first row transition metals. KTp also forms 1:1 complexes, for example it can be converted to K pMo(CO)₃ : When K pMo(CO)₃is treated with

butyl nitrite Butyl nitrite is the organic compound with the formula CH3(CH2)3ONO. It is an alkyl nitrite made from ''n''-butanol. Butyl nitrite is used recreationally as poppers. Synonyms include ''1-butyl nitrite'', n''-butyl nitrite'' and ''nitrous acid b ...

it yields the neutral orange complex TpMo(CO)₂NO. :K pMo(CO)₃ BuONO→TpMo(CO)₂NO+CO+KOBu

References

{{boron compounds Potassium compounds Boron compounds Pyrazoles