1. A complex comprising a hard-hard-hard pincer ligand, an early transition metal and a nitride bound to said metal.
2. The complex of claim 1, wherein said pincer ligand is an OCO pincer ligand.
3. The complex of claim 2, wherein said OCO pincer ligand is derived from:
where all carbons at positions 3,4,5,4\u2032,5\u20326\u2032,3\u2033,4\u2033 and 5\u2033 can be substituted with an alkyl or other substituent that is unreactive toward said metal and said nitride.
4. The complex of claim 1, wherein said metal comprises Mo.
5. The complex of claim 1, wherein said nitride is bonded to said metal by a triple bond.
6. The complex of claim 1, wherein said complex has the structure:
7. A method of forming a nitrogen comprising molecule comprising the steps of:
providing a complex comprising a hard-hard-hard pincer ligand, an early transition metal and a nitride bound to said metal;
providing an electrophilic reagent;
mixing said electrophilic reagent with said complex, wherein said complex transfers the nitrogen of said nitride to said electrophilic reagent; and
isolating said nitrogen comprising molecule.
8. The method of claim 7, wherein said pincer ligand is an OCO pincer ligand.
9. The method of claim 7, wherein said OCO pincer ligand is derived from:
where all carbons at positions 3,4,5,4\u2032,5\u2032,6\u2032,3\u2033,4\u2033 and 5\u2033 can be substituted with an alkyl or other substituent that is unreactive toward said metal and said nitride.
10. The method of claim 7, wherein said metal comprises Mo.
11. The method of claim 7, wherein said nitride is bonded to said metal by a triple bond.
12. The method of claim 7, wherein said complex comprises:
13. The method of claim 7, wherein said step of providing a complex comprises said complex in a solvent.
14. The method of claim 7, wherein said step of providing an electrophilic reagent comprises said reagent in a solvent.
15. The method of claim 7, wherein said electrophilic reagent comprises an acid chloride and said nitrogen comprising compound comprises a nitrile.
16. The method of claim 15, wherein said acid chloride comprises trimethylacetyl chloride.
17. The method of claim 7, wherein said complex comprises II, said electrophilic reagent comprises trimethylacetyl chloride, and said nitrogen comprising molecule comprises trimethylacetonitrile.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A concentrate dispensing system for dispensing a fluid for dilution, comprising a bracket and a bottle, wherein the bracket is arranged to releasably hold the bottle; the bottle is arranged to dispense a predetermined quantity of the fluid to a first receptacle type, which is freestanding, when the bottle is in a freehand mode and is not held in the bracket; and the bottle is arranged to dispense a predetermined quantity of the fluid to a second receptacle type, which is received and guided by the bracket, when the bottle is in a bracket mode and is held in the bracket.
2. A system as claimed in claim 1, wherein the predetermined volume of fluid dispensed from the bottle in the freehand mode and in the bracket mode is dependent upon whether the bottle is in the freehand mode or in the bracket mode.
3. A system as claimed in claim 1, wherein the bottle comprises a bottle actuation means, a valve and a bracket actuation means, the bottle actuation means being arranged to actuate the valve to dispense a first volume of fluid from an outlet when the bottle is in the freehand mode, and the bracket actuation means being arranged to actuate the valve to dispense a second volume of fluid from the outlet when the bottle is in the bracket mode.
4. A system as claimed in claim 1, wherein a greater volume of fluid is dispensed in the freehand mode than in the bracket mode.
5. A system as claimed in claim 1, wherein the volume of fluid dispensed in the bracket mode is dependent upon the receptacle.
6. A system as claimed in claim 1, wherein the first receptacle is a bucket or a cleaning buggy and the second receptacle is a handheld trigger spray bottle.
7. A system as claimed in claim 3, wherein the bottle actuation means comprises a trigger, the trigger being arranged to engage and actuate the valve.
8. A system as claimed in claim 7 further comprising a safety lock, wherein the safety lock is arranged to bring the trigger into and out of engagement with the valve, such that in order to dispense fluid in the freehand mode the safety lock and trigger must be operated simultaneously.
9. A system as claimed in claim 8, wherein the trigger and safety lock are resiliently biased to return to an operable position following their operation, with the trigger and safety lock inoperable during their return, under the biasing force, to the operable position.
10. A system as claimed in claim 9, wherein the biasing of the trigger and safety lock effects a time delay, with the return to the operable position, following operation of the trigger and safety lock, taking a predetermined time.
11. A system as claimed in claim 3, wherein the bracket actuation means comprises a dispensing head on the bottle, which is fluidly connected to the outlet, a receptacle of the second receptacle type being arranged to engage and actuate the dispensing head, and the dispensing head being arranged to engage and actuate the valve, such that engagement and actuation of the dispensing head by the receptacle, when the bottle is in the bracket mode, dispenses fluid to the receptacle.
12. A system as claimed in claim 11, wherein the bracket actuation means further comprises a resiliently biased bottle support, a resiliently biased actuation button and a receptacle support, each of which is provided on the bracket, the bottle support is arranged to support the bottle, such that it may travel vertically up and down, the actuation button is arranged to effect the downward travel of the bottle, and the receptacle support is arranged to receive and guide the receptacle, such that when the receptacle is received by the receptacle support and the actuation button is actuated, the dispensing head is brought to bear on the receptacle and the fluid is dispensed to the receptacle.
13. A system as claimed in claim 11, wherein the receptacle is provided with a collar that, in use, abuts the dispensing head and limits the vertical travel of the dispensing head, such that the volume of fluid dispensed is dependent on the height of the collar.
14. A system as claimed in claim 13, wherein a range of collars of different heights are provided, such that a range of predetermined volumes of fluid may be dispensed.
15. A system as claimed in claim 12, wherein the bottle support and actuation button are resiliency biased to return to an operable position following their operation, with the bottle support and actuation button inoperable during their return, under the biasing force, to the operable position.
16. A system as claimed in claim 15, wherein the biasing of the bottle support and actuation button effects a time delay, with the return to the operable position, following operation of the bottle support and actuation button, taking a predetermined time.
17. A system as claimed in claim 1, wherein the bottle is refillable and is provided with a filling cap that is provided with a microbiological filter.
18. A system as claimed in claim 1, wherein the bracket is arranged to be mounted on a wall or on a re-locatable cleaning trolley or similar.
19. A system substantially as hereinbefore described with reference to, and as illustrated by, the accompanying drawings.
20. (canceled)
21. (canceled)
22. (canceled)