Tetra-(amino)-diborons^1,2

Unusual chalcogen-boron ring compounds: the gas-phase structures of 1,4-B4S2(NMe2)4 and related molecules

“…Five distance parameters were required, namely rS ◊ ◊ ◊ S, rS-B, rB-N, rC-N and rC-H (p [1][2][3][4][5] ). Five bond angle parameters were also employed.…”

“…Addition of HCl was necessary to remove HNMe 2 as [NH 2 Me 2 ]Cl, as shown in eqn (1), although HCl addition was not required when B 2 (NMe 2 ) 4 and H 2 S were reacted under pressure in an autoclave. Sublimable colourless crystals of 1 were obtained from benzene and were characterised by elemental analysis, melting point, molecular weight, and 11 B NMR and infrared spectroscopies.…”

Umsetzungen von Metall-und Metalloidverbindungen mit mehrfunktionellen Molekülen, XXXIV Darstellung von Sulfmamidoboranen / Reactions of Metal and Metalloid Compounds with Polyfunctions! Molecules, XXXIV Synthesis of Sulfinamidoboranes

“…Diese wurden nach folgenden Literaturangaben bereitet: Sn(CH3)4 [9,10], (CH3)2BBr [11,12], C6H5BC12 [12], C6H5B(NMe2)2 [13], C6H5B(NEt2)2 [13], C6H5B-NMe2 [14][15][16], CI B(NMe2)3 [17,18], B(NEt2)3 [18,19], (Me2N)2BCl Me I CH2-N. [16][17][18], (Et2N)2BCl [14][15][16], | >Cl [20][21][22] Da die Verbindungen 1-8 nicht lagerbeständig sind, wurden sie im Kühlschrank aufbewahrt bzw. unmittelbar nach der Darstellung analytisch und spektroskopisch untersucht.…”

Preparation and Reactions of Di(aminoboryl) Oxides

“…One relevant example employing [(CH 3 ) 2 N](C 6 H<)BOB(C 6 H)[N(CH 3 ) 2 J (1c) has already been described. 4 The present study reports the preparation, characterization, and representative reactions of some [4][5][6][7][8][9][10][11][12][13][14][15][16] as the starting material. However, distillation under vacuum gave only a product of bp 125 'C (1 Torr) which was contaminated by ca.…”

“…Aminoboronation of I with isocyanates yielded ureidoboranes, which exist in a bicyclic structure containing four-coordinate boron -19-(6). Transamination of 1 with N-methylacetamide gave amidoboranes (8), which also contain fourcoordinate boron. The latter type of compound was also obtained from the reaction of the ureidoboranes 6 with amides, whereas Ic reacted with N-methylformamide to give a triply bridged species containing both three-and four-coordinate boron (10).…”