Angelw. Chem. Int. ed.: Chemist first synthesized boron tellurium double bond

It is very important for the continuous development of chemical knowledge to prepare and separate compounds with unusual bond In the past few decades, considerable progress has been made in characterizing the multiple bond forms between boron and many elements, including transition metal boron, carbon, silicon, nitrogen, phosphorus and arsenic Interestingly, apart from the transition metal whose bonding involves d orbital, no element heavier than the fourth row is observed to form multiple bonds with boron In addition, in the sulfur group, the stability of multiple bonds with boron is limited In the past, the reported work mainly focused on the multivalent bond between boron and sulfur elements (source: angelw Chem Int ed.) tellurium is one of the rarest elements in the crust, as rare as platinum Tellurium compounds are mainly used for cadmium telluride in ferroalloys and solar panels However, compounds containing tellurium interacting with lighter major elements are poorly understood So far, the number of molecular compounds with boron tellurium interaction is very limited The first example of complete characterization was reported in 1995 The π orbital model of the B = te bond (source: angelw Chem Int ed.) led by Holger Braunschweig of the University of wirtzburg, a team has now found a surprisingly simple reaction to synthesize the first double bonded boron tellurium molecule: the element tellurium is added to the manganese alkyl xylene complex and inserted between manganese and boron The method is also suitable for sulfur and selenium The trivalent boron complexes obtained in this way have double bonds with each of these elements, making them easy to prepare metal complexes of alkali stabilized boranone, which is a very rare compound Structural characterization and computational modeling confirm the nature of these very unusual interactions X-ray crystallography shows that the measurement of b-te bond of purple crystal is only 2.1 μ m, which is the shortest b-te bond found so far In conclusion, the first compound with boron tellurium double bond is reported This unprecedented interaction has been fully characterized in structure and calculation Compared with the similar selenium and sulfur analogues, their double bond properties are further supported In this synthesis, the sulfur atom is directly inserted into the M = B bond of the stable transition metal boron compound, which represents a very simple method to synthesize the multi bond of boron sulfur group elements Paper link: http://onlinelibrary.wiley.com/doi/10.1002/anie.201708729/abstract subject group link: https://